Improve wallet functionality (#1636)

* Add basic wallet library

* Add CLI

* Add multisig support

* Add persistence to wallet

* Add tests

* go mod tidy

* Fix lint errors

* Fix wallet send command

* Always use the password as byte slice

* Remove redundant empty string

* Use different salt per private key

* Don't sign a signed transaction

* Add comment

* Remove old wallet

* Change directory permissions

* Use NormalizeRPCServerAddress

* Fix compilation errors

.github/workflows/go-deploy.yml

@@ -0,0 +1,77 @@
+name: Build and Upload assets
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
+    name: Building For ${{ matrix.os }}
+    steps:
+      - name: Fix windows CRLF
+        run: git config --global core.autocrlf false
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      # We need to increase the page size because the tests run out of memory on github CI windows.
+      # Use the powershell script from this github action: https://github.com/al-cheb/configure-pagefile-action/blob/master/scripts/SetPageFileSize.ps1
+      # MIT License (MIT) Copyright (c) 2020 Maxim Lobanov and contributors
+      - name: Increase page size on windows
+        if: runner.os == 'Windows'
+        shell: powershell
+        run: powershell -command .\.github\workflows\SetPageFileSize.ps1
+
+
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+
+      - name: Build on linux
+        if: runner.os == 'Linux'
+        # `-extldflags=-static` - means static link everything, `-tags netgo,osusergo` means use pure go replacements for "os/user" and "net"
+        # `-s -w` strips the binary to produce smaller size binaries
+        run: |
+          go build -v -ldflags="-s -w -extldflags=-static" -tags netgo,osusergo -o ./bin/ ./...
+          archive="bin/kaspad-${{ github.event.release.tag_name }}-linux.zip"
+          asset_name="kaspad-${{ github.event.release.tag_name }}-linux.zip"
+          zip -r "${archive}" ./bin/*
+          echo "archive=${archive}" >> $GITHUB_ENV
+          echo "asset_name=${asset_name}" >> $GITHUB_ENV
+
+      - name: Build on Windows
+        if: runner.os == 'Windows'
+        shell: bash
+        run: |
+          go build -v -ldflags="-s -w" -o bin/ ./...
+          archive="bin/kaspad-${{ github.event.release.tag_name }}-win64.zip"
+          asset_name="kaspad-${{ github.event.release.tag_name }}-win64.zip"
+          powershell "Compress-Archive bin/* \"${archive}\""
+          echo "archive=${archive}" >> $GITHUB_ENV
+          echo "asset_name=${asset_name}" >> $GITHUB_ENV
+
+      - name: Build on MacOS
+        if: runner.os == 'macOS'
+        run: |
+          go build -v -ldflags="-s -w" -o ./bin/ ./...
+          archive="bin/kaspad-${{ github.event.release.tag_name }}-osx.zip"
+          asset_name="kaspad-${{ github.event.release.tag_name }}-osx.zip"
+          zip -r "${archive}" ./bin/*
+          echo "archive=${archive}" >> $GITHUB_ENV
+          echo "asset_name=${asset_name}" >> $GITHUB_ENV
+
+
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ github.event.release.upload_url }}
+          asset_path: "./${{ env.archive }}"
+          asset_name: "${{ env.asset_name }}"
+          asset_content_type: application/zip

.github/workflows/go.yml

@@ -63,6 +63,9 @@ jobs:
         with:
           go-version: 1.16
 
+      - name: Delete the stability tests from coverage
+        run: rm -r stability-tests
+
       - name: Create coverage file
         run: go test -v -covermode=atomic -coverpkg=./... -coverprofile coverage.txt ./...
 

README.md

@@ -56,7 +56,7 @@ $ kaspad
 ```
 
 ## Discord
-Join our discord server using the following link: https://discord.gg/WmGhhzk
+Join our discord server using the following link: https://discord.gg/YNYnNN5Pf2
 
 ## Issue Tracker
 

app/app.go

@@ -171,7 +171,7 @@ func doUpgrades() error {
 
 // dbPath returns the path to the block database given a database type.
 func databasePath(cfg *config.Config) string {
-	return filepath.Join(cfg.DataDir, "db")
+	return filepath.Join(cfg.AppDir, "data")
 }
 
 func removeDatabase(cfg *config.Config) error {

app/appmessage/domainconverters.go

@@ -3,6 +3,7 @@ package appmessage
 import (
 	"encoding/hex"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/blockheader"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/utxo"
 
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
@@ -83,7 +84,6 @@ func DomainTransactionToMsgTx(domainTransaction *externalapi.DomainTransaction)
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: domainTransaction.SubnetworkID,
 		Gas:          domainTransaction.Gas,
-		PayloadHash:  domainTransaction.PayloadHash,
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -133,7 +133,6 @@ func MsgTxToDomainTransaction(msgTx *MsgTx) *externalapi.DomainTransaction {
 		LockTime:     msgTx.LockTime,
 		SubnetworkID: msgTx.SubnetworkID,
 		Gas:          msgTx.Gas,
-		PayloadHash:  msgTx.PayloadHash,
 		Payload:      payload,
 	}
 }
@@ -198,10 +197,6 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 	if err != nil {
 		return nil, err
 	}
-	payloadHash, err := externalapi.NewDomainHashFromString(rpcTransaction.PayloadHash)
-	if err != nil {
-		return nil, err
-	}
 	payload, err := hex.DecodeString(rpcTransaction.Payload)
 	if err != nil {
 		return nil, err
@@ -214,7 +209,6 @@ func RPCTransactionToDomainTransaction(rpcTransaction *RPCTransaction) (*externa
 		LockTime:     rpcTransaction.LockTime,
 		SubnetworkID: *subnetworkID,
 		Gas:          rpcTransaction.LockTime,
-		PayloadHash:  *payloadHash,
 		Payload:      payload,
 	}, nil
 }
@@ -244,7 +238,6 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		}
 	}
 	subnetworkID := transaction.SubnetworkID.String()
-	payloadHash := transaction.PayloadHash.String()
 	payload := hex.EncodeToString(transaction.Payload)
 	return &RPCTransaction{
 		Version:      transaction.Version,
@@ -253,7 +246,6 @@ func DomainTransactionToRPCTransaction(transaction *externalapi.DomainTransactio
 		LockTime:     transaction.LockTime,
 		SubnetworkID: subnetworkID,
 		Gas:          transaction.LockTime,
-		PayloadHash:  payloadHash,
 		Payload:      payload,
 	}
 }
@@ -274,7 +266,7 @@ func OutpointAndUTXOEntryPairsToDomainOutpointAndUTXOEntryPairs(
 				outpointAndUTXOEntryPair.UTXOEntry.Amount,
 				outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey,
 				outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase,
-				outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore,
+				outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore,
 			),
 		}
 	}
@@ -297,9 +289,76 @@ func DomainOutpointAndUTXOEntryPairsToOutpointAndUTXOEntryPairs(
 				Amount:          outpointAndUTXOEntryPair.UTXOEntry.Amount(),
 				ScriptPublicKey: outpointAndUTXOEntryPair.UTXOEntry.ScriptPublicKey(),
 				IsCoinbase:      outpointAndUTXOEntryPair.UTXOEntry.IsCoinbase(),
-				BlockBlueScore:  outpointAndUTXOEntryPair.UTXOEntry.BlockBlueScore(),
+				BlockDAAScore:   outpointAndUTXOEntryPair.UTXOEntry.BlockDAAScore(),
 			},
 		}
 	}
 	return domainOutpointAndUTXOEntryPairs
 }
+
+// DomainBlockToRPCBlock converts DomainBlocks to RPCBlocks
+func DomainBlockToRPCBlock(block *externalapi.DomainBlock) *RPCBlock {
+	header := &RPCBlockHeader{
+		Version:              uint32(block.Header.Version()),
+		ParentHashes:         hashes.ToStrings(block.Header.ParentHashes()),
+		HashMerkleRoot:       block.Header.HashMerkleRoot().String(),
+		AcceptedIDMerkleRoot: block.Header.AcceptedIDMerkleRoot().String(),
+		UTXOCommitment:       block.Header.UTXOCommitment().String(),
+		Timestamp:            block.Header.TimeInMilliseconds(),
+		Bits:                 block.Header.Bits(),
+		Nonce:                block.Header.Nonce(),
+	}
+	transactions := make([]*RPCTransaction, len(block.Transactions))
+	for i, transaction := range block.Transactions {
+		transactions[i] = DomainTransactionToRPCTransaction(transaction)
+	}
+	return &RPCBlock{
+		Header:       header,
+		Transactions: transactions,
+	}
+}
+
+// RPCBlockToDomainBlock converts `block` into a DomainBlock
+func RPCBlockToDomainBlock(block *RPCBlock) (*externalapi.DomainBlock, error) {
+	parentHashes := make([]*externalapi.DomainHash, len(block.Header.ParentHashes))
+	for i, parentHash := range block.Header.ParentHashes {
+		domainParentHashes, err := externalapi.NewDomainHashFromString(parentHash)
+		if err != nil {
+			return nil, err
+		}
+		parentHashes[i] = domainParentHashes
+	}
+	hashMerkleRoot, err := externalapi.NewDomainHashFromString(block.Header.HashMerkleRoot)
+	if err != nil {
+		return nil, err
+	}
+	acceptedIDMerkleRoot, err := externalapi.NewDomainHashFromString(block.Header.AcceptedIDMerkleRoot)
+	if err != nil {
+		return nil, err
+	}
+	utxoCommitment, err := externalapi.NewDomainHashFromString(block.Header.UTXOCommitment)
+	if err != nil {
+		return nil, err
+	}
+	header := blockheader.NewImmutableBlockHeader(
+		uint16(block.Header.Version),
+		parentHashes,
+		hashMerkleRoot,
+		acceptedIDMerkleRoot,
+		utxoCommitment,
+		block.Header.Timestamp,
+		block.Header.Bits,
+		block.Header.Nonce)
+	transactions := make([]*externalapi.DomainTransaction, len(block.Transactions))
+	for i, transaction := range block.Transactions {
+		domainTransaction, err := RPCTransactionToDomainTransaction(transaction)
+		if err != nil {
+			return nil, err
+		}
+		transactions[i] = domainTransaction
+	}
+	return &externalapi.DomainBlock{
+		Header:       header,
+		Transactions: transactions,
+	}, nil
+}

app/appmessage/p2p_msgblock.go

@@ -15,19 +15,6 @@ import (
 // backing array multiple times.
 const defaultTransactionAlloc = 2048
 
-// MaxMassAcceptedByBlock is the maximum total transaction mass a block may accept.
-const MaxMassAcceptedByBlock = 10000000
-
-// MaxMassPerTx is the maximum total mass a transaction may have.
-const MaxMassPerTx = MaxMassAcceptedByBlock / 2
-
-// MaxTxPerBlock is the maximum number of transactions that could
-// possibly fit into a block.
-const MaxTxPerBlock = (MaxMassAcceptedByBlock / minTxPayload) + 1
-
-// MaxBlockParents is the maximum allowed number of parents for block.
-const MaxBlockParents = 10
-
 // TxLoc holds locator data for the offset and length of where a transaction is
 // located within a MsgBlock data buffer.
 type TxLoc struct {

app/appmessage/p2p_msgpruningpointutxosetchunk.go

@@ -31,6 +31,6 @@ type OutpointAndUTXOEntryPair struct {
 type UTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *externalapi.ScriptPublicKey
-	BlockBlueScore  uint64
+	BlockDAAScore   uint64
 	IsCoinbase      bool
 }

app/appmessage/p2p_msgtx.go

@@ -6,7 +6,6 @@ package appmessage
 
 import (
 	"encoding/binary"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 	"strconv"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -133,7 +132,6 @@ type MsgTx struct {
 	LockTime     uint64
 	SubnetworkID externalapi.DomainSubnetworkID
 	Gas          uint64
-	PayloadHash  externalapi.DomainHash
 	Payload      []byte
 }
 
@@ -179,7 +177,6 @@ func (msg *MsgTx) Copy() *MsgTx {
 		LockTime:     msg.LockTime,
 		SubnetworkID: msg.SubnetworkID,
 		Gas:          msg.Gas,
-		PayloadHash:  msg.PayloadHash,
 	}
 
 	if msg.Payload != nil {
@@ -280,18 +277,12 @@ func newMsgTx(version uint16, txIn []*TxIn, txOut []*TxOut, subnetworkID *extern
 		txOut = make([]*TxOut, 0, defaultTxInOutAlloc)
 	}
 
-	var payloadHash externalapi.DomainHash
-	if *subnetworkID != subnetworks.SubnetworkIDNative {
-		payloadHash = *hashes.PayloadHash(payload)
-	}
-
 	return &MsgTx{
 		Version:      version,
 		TxIn:         txIn,
 		TxOut:        txOut,
 		SubnetworkID: *subnetworkID,
 		Gas:          gas,
-		PayloadHash:  payloadHash,
 		Payload:      payload,
 		LockTime:     lockTime,
 	}

app/appmessage/p2p_msgtx_test.go

@@ -133,8 +133,8 @@ func TestTx(t *testing.T) {
 
 // TestTxHash tests the ability to generate the hash of a transaction accurately.
 func TestTxHashAndID(t *testing.T) {
-	txHash1Str := "4bee9ee495bd93a755de428376bd582a2bb6ec37c041753b711c0606d5745c13"
-	txID1Str := "f868bd20e816256b80eac976821be4589d24d21141bd1cec6e8005d0c16c6881"
+	txHash1Str := "93663e597f6c968d32d229002f76408edf30d6a0151ff679fc729812d8cb2acc"
+	txID1Str := "24079c6d2bdf602fc389cc307349054937744a9c8dc0f07c023e6af0e949a4e7"
 	wantTxID1, err := transactionid.FromString(txID1Str)
 	if err != nil {
 		t.Fatalf("NewTxIDFromStr: %v", err)
@@ -185,14 +185,14 @@ func TestTxHashAndID(t *testing.T) {
 			spew.Sprint(tx1ID), spew.Sprint(wantTxID1))
 	}
 
-	hash2Str := "cb1bdb4a83d4885535fb3cceb5c96597b7df903db83f0ffcd779d703affd8efd"
+	hash2Str := "8dafd1bec24527d8e3b443ceb0a3b92fffc0d60026317f890b2faf5e9afc177a"
 	wantHash2, err := externalapi.NewDomainHashFromString(hash2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)
 		return
 	}
 
-	id2Str := "ca080073d4ddf5b84443a0964af633f3c70a5b290fd3bc35a7e6f93fd33f9330"
+	id2Str := "89ffb49474637502d9059af38b8a95fc2f0d3baef5c801d7a9b9c8830671b711"
 	wantID2, err := transactionid.FromString(id2Str)
 	if err != nil {
 		t.Errorf("NewTxIDFromStr: %v", err)

app/appmessage/p2p_msgversion_test.go

@@ -19,7 +19,7 @@ func TestVersion(t *testing.T) {
 
 	// Create version message data.
 	tcpAddrMe := &net.TCPAddr{IP: net.ParseIP("127.0.0.1"), Port: 16111}
-	me := NewNetAddress(tcpAddrMe, SFNodeNetwork)
+	me := NewNetAddress(tcpAddrMe)
 	generatedID, err := id.GenerateID()
 	if err != nil {
 		t.Fatalf("id.GenerateID: %s", err)

app/appmessage/p2p_netaddress.go

@@ -15,9 +15,6 @@ type NetAddress struct {
 	// Last time the address was seen.
 	Timestamp mstime.Time
 
-	// Bitfield which identifies the services supported by the address.
-	Services ServiceFlag
-
 	// IP address of the peer.
 	IP net.IP
 
@@ -26,17 +23,6 @@ type NetAddress struct {
 	Port uint16
 }
 
-// HasService returns whether the specified service is supported by the address.
-func (na *NetAddress) HasService(service ServiceFlag) bool {
-	return na.Services&service == service
-}
-
-// AddService adds service as a supported service by the peer generating the
-// message.
-func (na *NetAddress) AddService(service ServiceFlag) {
-	na.Services |= service
-}
-
 // TCPAddress converts the NetAddress to *net.TCPAddr
 func (na *NetAddress) TCPAddress() *net.TCPAddr {
 	return &net.TCPAddr{
@@ -47,20 +33,19 @@ func (na *NetAddress) TCPAddress() *net.TCPAddr {
 
 // NewNetAddressIPPort returns a new NetAddress using the provided IP, port, and
 // supported services with defaults for the remaining fields.
-func NewNetAddressIPPort(ip net.IP, port uint16, services ServiceFlag) *NetAddress {
-	return NewNetAddressTimestamp(mstime.Now(), services, ip, port)
+func NewNetAddressIPPort(ip net.IP, port uint16) *NetAddress {
+	return NewNetAddressTimestamp(mstime.Now(), ip, port)
 }
 
 // NewNetAddressTimestamp returns a new NetAddress using the provided
 // timestamp, IP, port, and supported services. The timestamp is rounded to
 // single millisecond precision.
 func NewNetAddressTimestamp(
-	timestamp mstime.Time, services ServiceFlag, ip net.IP, port uint16) *NetAddress {
+	timestamp mstime.Time, ip net.IP, port uint16) *NetAddress {
 	// Limit the timestamp to one millisecond precision since the protocol
 	// doesn't support better.
 	na := NetAddress{
 		Timestamp: timestamp,
-		Services:  services,
 		IP:        ip,
 		Port:      port,
 	}
@@ -69,6 +54,6 @@ func NewNetAddressTimestamp(
 
 // NewNetAddress returns a new NetAddress using the provided TCP address and
 // supported services with defaults for the remaining fields.
-func NewNetAddress(addr *net.TCPAddr, services ServiceFlag) *NetAddress {
-	return NewNetAddressIPPort(addr.IP, uint16(addr.Port), services)
+func NewNetAddress(addr *net.TCPAddr) *NetAddress {
+	return NewNetAddressIPPort(addr.IP, uint16(addr.Port))
 }

app/appmessage/p2p_netaddress_test.go

@@ -15,7 +15,7 @@ func TestNetAddress(t *testing.T) {
 	port := 16111
 
 	// Test NewNetAddress.
-	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port}, 0)
+	na := NewNetAddress(&net.TCPAddr{IP: ip, Port: port})
 
 	// Ensure we get the same ip, port, and services back out.
 	if !na.IP.Equal(ip) {
@@ -25,21 +25,4 @@ func TestNetAddress(t *testing.T) {
 		t.Errorf("NetNetAddress: wrong port - got %v, want %v", na.Port,
 			port)
 	}
-	if na.Services != 0 {
-		t.Errorf("NetNetAddress: wrong services - got %v, want %v",
-			na.Services, 0)
-	}
-	if na.HasService(SFNodeNetwork) {
-		t.Errorf("HasService: SFNodeNetwork service is set")
-	}
-
-	// Ensure adding the full service node flag works.
-	na.AddService(SFNodeNetwork)
-	if na.Services != SFNodeNetwork {
-		t.Errorf("AddService: wrong services - got %v, want %v",
-			na.Services, SFNodeNetwork)
-	}
-	if !na.HasService(SFNodeNetwork) {
-		t.Errorf("HasService: SFNodeNetwork service not set")
-	}
 }

app/appmessage/rpc_get_block.go

@@ -25,7 +25,7 @@ func NewGetBlockRequestMessage(hash string, includeTransactionVerboseData bool)
 // its respective RPC message
 type GetBlockResponseMessage struct {
 	baseMessage
-	BlockVerboseData *BlockVerboseData
+	Block *RPCBlock
 
 	Error *RPCError
 }
@@ -39,71 +39,3 @@ func (msg *GetBlockResponseMessage) Command() MessageCommand {
 func NewGetBlockResponseMessage() *GetBlockResponseMessage {
 	return &GetBlockResponseMessage{}
 }
-
-// BlockVerboseData holds verbose data about a block
-type BlockVerboseData struct {
-	Hash                   string
-	Version                uint16
-	VersionHex             string
-	HashMerkleRoot         string
-	AcceptedIDMerkleRoot   string
-	UTXOCommitment         string
-	TxIDs                  []string
-	TransactionVerboseData []*TransactionVerboseData
-	Time                   int64
-	Nonce                  uint64
-	Bits                   string
-	Difficulty             float64
-	ParentHashes           []string
-	ChildrenHashes         []string
-	SelectedParentHash     string
-	BlueScore              uint64
-	IsHeaderOnly           bool
-}
-
-// TransactionVerboseData holds verbose data about a transaction
-type TransactionVerboseData struct {
-	TxID                      string
-	Hash                      string
-	Size                      uint64
-	Version                   uint16
-	LockTime                  uint64
-	SubnetworkID              string
-	Gas                       uint64
-	PayloadHash               string
-	Payload                   string
-	TransactionVerboseInputs  []*TransactionVerboseInput
-	TransactionVerboseOutputs []*TransactionVerboseOutput
-	BlockHash                 string
-	Time                      uint64
-	BlockTime                 uint64
-}
-
-// TransactionVerboseInput holds data about a transaction input
-type TransactionVerboseInput struct {
-	TxID        string
-	OutputIndex uint32
-	ScriptSig   *ScriptSig
-	Sequence    uint64
-}
-
-// ScriptSig holds data about a script signature
-type ScriptSig struct {
-	Asm string
-	Hex string
-}
-
-// TransactionVerboseOutput holds data about a transaction output
-type TransactionVerboseOutput struct {
-	Value        uint64
-	Index        uint32
-	ScriptPubKey *ScriptPubKeyResult
-}
-
-// ScriptPubKeyResult holds data about a script public key
-type ScriptPubKeyResult struct {
-	Hex     string
-	Type    string
-	Address string
-	Version uint16
-}

app/appmessage/rpc_get_block_template.go

@@ -23,7 +23,7 @@ func NewGetBlockTemplateRequestMessage(payAddress string) *GetBlockTemplateReque
 // its respective RPC message
 type GetBlockTemplateResponseMessage struct {
 	baseMessage
-	MsgBlock *MsgBlock
+	Block    *RPCBlock
 	IsSynced bool
 
 	Error *RPCError
@@ -35,9 +35,9 @@ func (msg *GetBlockTemplateResponseMessage) Command() MessageCommand {
 }
 
 // NewGetBlockTemplateResponseMessage returns a instance of the message
-func NewGetBlockTemplateResponseMessage(msgBlock *MsgBlock, isSynced bool) *GetBlockTemplateResponseMessage {
+func NewGetBlockTemplateResponseMessage(block *RPCBlock, isSynced bool) *GetBlockTemplateResponseMessage {
 	return &GetBlockTemplateResponseMessage{
-		MsgBlock: msgBlock,
+		Block:    block,
 		IsSynced: isSynced,
 	}
 }

app/appmessage/rpc_get_blocks.go

@@ -5,7 +5,7 @@ package appmessage
 type GetBlocksRequestMessage struct {
 	baseMessage
 	LowHash                       string
-	IncludeBlockVerboseData       bool
+	IncludeBlocks                 bool
 	IncludeTransactionVerboseData bool
 }
 
@@ -15,11 +15,11 @@ func (msg *GetBlocksRequestMessage) Command() MessageCommand {
 }
 
 // NewGetBlocksRequestMessage returns a instance of the message
-func NewGetBlocksRequestMessage(lowHash string, includeBlockVerboseData bool,
+func NewGetBlocksRequestMessage(lowHash string, includeBlocks bool,
 	includeTransactionVerboseData bool) *GetBlocksRequestMessage {
 	return &GetBlocksRequestMessage{
 		LowHash:                       lowHash,
-		IncludeBlockVerboseData:       includeBlockVerboseData,
+		IncludeBlocks:                 includeBlocks,
 		IncludeTransactionVerboseData: includeTransactionVerboseData,
 	}
 }
@@ -28,8 +28,8 @@ func NewGetBlocksRequestMessage(lowHash string, includeBlockVerboseData bool,
 // its respective RPC message
 type GetBlocksResponseMessage struct {
 	baseMessage
-	BlockHashes      []string
-	BlockVerboseData []*BlockVerboseData
+	BlockHashes []string
+	Blocks      []*RPCBlock
 
 	Error *RPCError
 }
@@ -40,11 +40,6 @@ func (msg *GetBlocksResponseMessage) Command() MessageCommand {
 }
 
 // NewGetBlocksResponseMessage returns a instance of the message
-func NewGetBlocksResponseMessage(blockHashes []string, blockHexes []string,
-	blockVerboseData []*BlockVerboseData) *GetBlocksResponseMessage {
-
-	return &GetBlocksResponseMessage{
-		BlockHashes:      blockHashes,
-		BlockVerboseData: blockVerboseData,
-	}
+func NewGetBlocksResponseMessage() *GetBlocksResponseMessage {
+	return &GetBlocksResponseMessage{}
 }

app/appmessage/rpc_get_info.go

@@ -20,7 +20,8 @@ func NewGeInfoRequestMessage() *GetInfoRequestMessage {
 // its respective RPC message
 type GetInfoResponseMessage struct {
 	baseMessage
-	P2PID string
+	P2PID       string
+	MempoolSize uint64
 
 	Error *RPCError
 }
@@ -31,8 +32,9 @@ func (msg *GetInfoResponseMessage) Command() MessageCommand {
 }
 
 // NewGetInfoResponseMessage returns a instance of the message
-func NewGetInfoResponseMessage(p2pID string) *GetInfoResponseMessage {
+func NewGetInfoResponseMessage(p2pID string, mempoolSize uint64) *GetInfoResponseMessage {
 	return &GetInfoResponseMessage{
-		P2PID: p2pID,
+		P2PID:       p2pID,
+		MempoolSize: mempoolSize,
 	}
 }

app/appmessage/rpc_get_mempool_entry.go

@@ -28,8 +28,8 @@ type GetMempoolEntryResponseMessage struct {
 
 // MempoolEntry represents a transaction in the mempool.
 type MempoolEntry struct {
-	Fee                    uint64
-	TransactionVerboseData *TransactionVerboseData
+	Fee         uint64
+	Transaction *RPCTransaction
 }
 
 // Command returns the protocol command string for the message
@@ -38,11 +38,11 @@ func (msg *GetMempoolEntryResponseMessage) Command() MessageCommand {
 }
 
 // NewGetMempoolEntryResponseMessage returns a instance of the message
-func NewGetMempoolEntryResponseMessage(fee uint64, transactionVerboseData *TransactionVerboseData) *GetMempoolEntryResponseMessage {
+func NewGetMempoolEntryResponseMessage(fee uint64, transaction *RPCTransaction) *GetMempoolEntryResponseMessage {
 	return &GetMempoolEntryResponseMessage{
 		Entry: &MempoolEntry{
-			Fee:                    fee,
-			TransactionVerboseData: transactionVerboseData,
+			Fee:         fee,
+			Transaction: transaction,
 		},
 	}
 }

app/appmessage/rpc_notify_block_added.go

@@ -37,8 +37,7 @@ func NewNotifyBlockAddedResponseMessage() *NotifyBlockAddedResponseMessage {
 // its respective RPC message
 type BlockAddedNotificationMessage struct {
 	baseMessage
-	Block            *MsgBlock
-	BlockVerboseData *BlockVerboseData
+	Block *RPCBlock
 }
 
 // Command returns the protocol command string for the message
@@ -47,9 +46,8 @@ func (msg *BlockAddedNotificationMessage) Command() MessageCommand {
 }
 
 // NewBlockAddedNotificationMessage returns a instance of the message
-func NewBlockAddedNotificationMessage(block *MsgBlock, blockVerboseData *BlockVerboseData) *BlockAddedNotificationMessage {
+func NewBlockAddedNotificationMessage(block *RPCBlock) *BlockAddedNotificationMessage {
 	return &BlockAddedNotificationMessage{
-		Block:            block,
-		BlockVerboseData: blockVerboseData,
+		Block: block,
 	}
 }

app/appmessage/rpc_submit_block.go

@@ -4,7 +4,7 @@ package appmessage
 // its respective RPC message
 type SubmitBlockRequestMessage struct {
 	baseMessage
-	Block *MsgBlock
+	Block *RPCBlock
 }
 
 // Command returns the protocol command string for the message
@@ -13,7 +13,7 @@ func (msg *SubmitBlockRequestMessage) Command() MessageCommand {
 }
 
 // NewSubmitBlockRequestMessage returns a instance of the message
-func NewSubmitBlockRequestMessage(block *MsgBlock) *SubmitBlockRequestMessage {
+func NewSubmitBlockRequestMessage(block *RPCBlock) *SubmitBlockRequestMessage {
 	return &SubmitBlockRequestMessage{
 		Block: block,
 	}
@@ -57,3 +57,35 @@ func (msg *SubmitBlockResponseMessage) Command() MessageCommand {
 func NewSubmitBlockResponseMessage() *SubmitBlockResponseMessage {
 	return &SubmitBlockResponseMessage{}
 }
+
+// RPCBlock is a kaspad block representation meant to be
+// used over RPC
+type RPCBlock struct {
+	Header       *RPCBlockHeader
+	Transactions []*RPCTransaction
+	VerboseData  *RPCBlockVerboseData
+}
+
+// RPCBlockHeader is a kaspad block header representation meant to be
+// used over RPC
+type RPCBlockHeader struct {
+	Version              uint32
+	ParentHashes         []string
+	HashMerkleRoot       string
+	AcceptedIDMerkleRoot string
+	UTXOCommitment       string
+	Timestamp            int64
+	Bits                 uint32
+	Nonce                uint64
+}
+
+// RPCBlockVerboseData holds verbose data about a block
+type RPCBlockVerboseData struct {
+	Hash               string
+	Difficulty         float64
+	SelectedParentHash string
+	TransactionIDs     []string
+	IsHeaderOnly       bool
+	BlueScore          uint64
+	ChildrenHashes     []string
+}

app/appmessage/rpc_submit_transaction.go

@@ -49,8 +49,8 @@ type RPCTransaction struct {
 	LockTime     uint64
 	SubnetworkID string
 	Gas          uint64
-	PayloadHash  string
 	Payload      string
+	VerboseData  *RPCTransactionVerboseData
 }
 
 // RPCTransactionInput is a kaspad transaction input representation
@@ -59,6 +59,7 @@ type RPCTransactionInput struct {
 	PreviousOutpoint *RPCOutpoint
 	SignatureScript  string
 	Sequence         uint64
+	VerboseData      *RPCTransactionInputVerboseData
 }
 
 // RPCScriptPublicKey is a kaspad ScriptPublicKey representation
@@ -72,6 +73,7 @@ type RPCScriptPublicKey struct {
 type RPCTransactionOutput struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
+	VerboseData     *RPCTransactionOutputVerboseData
 }
 
 // RPCOutpoint is a kaspad outpoint representation meant to be used
@@ -86,6 +88,25 @@ type RPCOutpoint struct {
 type RPCUTXOEntry struct {
 	Amount          uint64
 	ScriptPublicKey *RPCScriptPublicKey
-	BlockBlueScore  uint64
+	BlockDAAScore   uint64
 	IsCoinbase      bool
 }
+
+// RPCTransactionVerboseData holds verbose data about a transaction
+type RPCTransactionVerboseData struct {
+	TransactionID string
+	Hash          string
+	Size          uint64
+	BlockHash     string
+	BlockTime     uint64
+}
+
+// RPCTransactionInputVerboseData holds data about a transaction input
+type RPCTransactionInputVerboseData struct {
+}
+
+// RPCTransactionOutputVerboseData holds data about a transaction output
+type RPCTransactionOutputVerboseData struct {
+	ScriptPublicKeyType    string
+	ScriptPublicKeyAddress string
+}

app/component_manager.go

@@ -72,6 +72,8 @@ func (a *ComponentManager) Stop() {
 		log.Errorf("Error stopping the net adapter: %+v", err)
 	}
 
+	a.protocolManager.Close()
+
 	return
 }
 
@@ -155,7 +157,7 @@ func setupRPC(
 
 func (a *ComponentManager) maybeSeedFromDNS() {
 	if !a.cfg.DisableDNSSeed {
-		dnsseed.SeedFromDNS(a.cfg.NetParams(), a.cfg.DNSSeed, appmessage.SFNodeNetwork, false, nil,
+		dnsseed.SeedFromDNS(a.cfg.NetParams(), a.cfg.DNSSeed, false, nil,
 			a.cfg.Lookup, func(addresses []*appmessage.NetAddress) {
 				// Kaspad uses a lookup of the dns seeder here. Since seeder returns
 				// IPs of nodes and not its own IP, we can not know real IP of
@@ -163,7 +165,7 @@ func (a *ComponentManager) maybeSeedFromDNS() {
 				a.addressManager.AddAddresses(addresses...)
 			})
 
-		dnsseed.SeedFromGRPC(a.cfg.NetParams(), a.cfg.GRPCSeed, appmessage.SFNodeNetwork, false, nil,
+		dnsseed.SeedFromGRPC(a.cfg.NetParams(), a.cfg.GRPCSeed, false, nil,
 			func(addresses []*appmessage.NetAddress) {
 				a.addressManager.AddAddresses(addresses...)
 			})

app/protocol/flowcontext/blocks.go

@@ -37,12 +37,14 @@ func (f *FlowContext) OnNewBlock(block *externalapi.DomainBlock,
 		newBlockInsertionResults = append(newBlockInsertionResults, unorphaningResult.blockInsertionResult)
 	}
 
+	allAcceptedTransactions := make([]*externalapi.DomainTransaction, 0)
 	for i, newBlock := range newBlocks {
 		log.Debugf("OnNewBlock: passing block %s transactions to mining manager", hash)
-		_, err = f.Domain().MiningManager().HandleNewBlockTransactions(newBlock.Transactions)
+		acceptedTransactions, err := f.Domain().MiningManager().HandleNewBlockTransactions(newBlock.Transactions)
 		if err != nil {
 			return err
 		}
+		allAcceptedTransactions = append(allAcceptedTransactions, acceptedTransactions...)
 
 		if f.onBlockAddedToDAGHandler != nil {
 			log.Debugf("OnNewBlock: calling f.onBlockAddedToDAGHandler for block %s", hash)
@@ -54,7 +56,7 @@ func (f *FlowContext) OnNewBlock(block *externalapi.DomainBlock,
 		}
 	}
 
-	return nil
+	return f.broadcastTransactionsAfterBlockAdded(newBlocks, allAcceptedTransactions)
 }
 
 // OnPruningPointUTXOSetOverride calls the handler function whenever the UTXO set
@@ -67,9 +69,9 @@ func (f *FlowContext) OnPruningPointUTXOSetOverride() error {
 }
 
 func (f *FlowContext) broadcastTransactionsAfterBlockAdded(
-	block *externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
+	addedBlocks []*externalapi.DomainBlock, transactionsAcceptedToMempool []*externalapi.DomainTransaction) error {
 
-	f.updateTransactionsToRebroadcast(block)
+	f.updateTransactionsToRebroadcast(addedBlocks)
 
 	// Don't relay transactions when in IBD.
 	if f.IsIBDRunning() {

app/protocol/flowcontext/flow_context.go

@@ -61,6 +61,8 @@ type FlowContext struct {
 
 	orphans      map[externalapi.DomainHash]*externalapi.DomainBlock
 	orphansMutex sync.RWMutex
+
+	shutdownChan chan struct{}
 }
 
 // New returns a new instance of FlowContext.
@@ -79,9 +81,21 @@ func New(cfg *config.Config, domain domain.Domain, addressManager *addressmanage
 		transactionsToRebroadcast:   make(map[externalapi.DomainTransactionID]*externalapi.DomainTransaction),
 		orphans:                     make(map[externalapi.DomainHash]*externalapi.DomainBlock),
 		timeStarted:                 mstime.Now().UnixMilliseconds(),
+		shutdownChan:                make(chan struct{}),
 	}
 }
 
+// Close signals to all flows the the protocol manager is closed.
+func (f *FlowContext) Close() {
+	close(f.shutdownChan)
+}
+
+// ShutdownChan is a chan where flows can subscribe to shutdown
+// event.
+func (f *FlowContext) ShutdownChan() <-chan struct{} {
+	return f.shutdownChan
+}
+
 // SetOnBlockAddedToDAGHandler sets the onBlockAddedToDAG handler
 func (f *FlowContext) SetOnBlockAddedToDAGHandler(onBlockAddedToDAGHandler OnBlockAddedToDAGHandler) {
 	f.onBlockAddedToDAGHandler = onBlockAddedToDAGHandler

app/protocol/flowcontext/transactions.go

@@ -25,14 +25,17 @@ func (f *FlowContext) AddTransaction(tx *externalapi.DomainTransaction) error {
 	return f.Broadcast(inv)
 }
 
-func (f *FlowContext) updateTransactionsToRebroadcast(block *externalapi.DomainBlock) {
+func (f *FlowContext) updateTransactionsToRebroadcast(addedBlocks []*externalapi.DomainBlock) {
 	f.transactionsToRebroadcastLock.Lock()
 	defer f.transactionsToRebroadcastLock.Unlock()
-	// Note: if the block is red, its transactions won't be rebroadcasted
-	// anymore, although they are not included in the UTXO set.
-	// This is probably ok, since red blocks are quite rare.
-	for _, tx := range block.Transactions {
-		delete(f.transactionsToRebroadcast, *consensushashing.TransactionID(tx))
+
+	for _, block := range addedBlocks {
+		// Note: if a transaction is included in the DAG but not accepted,
+		// it won't be rebroadcast anymore, although it is not included in
+		// the UTXO set
+		for _, tx := range block.Transactions {
+			delete(f.transactionsToRebroadcast, *consensushashing.TransactionID(tx))
+		}
 	}
 }
 

app/protocol/flows/blockrelay/handle_request_headers.go

@@ -50,7 +50,7 @@ func (flow *handleRequestHeadersFlow) start() error {
 			// GetHashesBetween is a relatively heavy operation so we limit it
 			// in order to avoid locking the consensus for too long
 			const maxBlueScoreDifference = 1 << 10
-			blockHashes, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
+			blockHashes, _, err := flow.Domain().Consensus().GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
 			if err != nil {
 				return err
 			}

app/protocol/flows/ping/send.go

@@ -13,6 +13,7 @@ import (
 
 // SendPingsContext is the interface for the context needed for the SendPings flow.
 type SendPingsContext interface {
+	ShutdownChan() <-chan struct{}
 }
 
 type sendPingsFlow struct {
@@ -39,7 +40,13 @@ func (flow *sendPingsFlow) start() error {
 	ticker := time.NewTicker(pingInterval)
 	defer ticker.Stop()
 
-	for range ticker.C {
+	for {
+		select {
+		case <-flow.ShutdownChan():
+			return nil
+		case <-ticker.C:
+		}
+
 		nonce, err := random.Uint64()
 		if err != nil {
 			return err
@@ -62,5 +69,4 @@ func (flow *sendPingsFlow) start() error {
 		}
 		flow.peer.SetPingIdle()
 	}
-	return nil
 }

app/protocol/flows/testing/handle_relay_invs_test.go

@@ -129,7 +129,7 @@ type fakeRelayInvsContext struct {
 	rwLock                                        sync.RWMutex
 }
 
-func (f *fakeRelayInvsContext) GetBlockChildren(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
+func (f *fakeRelayInvsContext) GetBlockRelations(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, *externalapi.DomainHash, []*externalapi.DomainHash, error) {
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }
 
@@ -181,7 +181,7 @@ func (f *fakeRelayInvsContext) GetBlockAcceptanceData(blockHash *externalapi.Dom
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }
 
-func (f *fakeRelayInvsContext) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) ([]*externalapi.DomainHash, error) {
+func (f *fakeRelayInvsContext) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) (hashes []*externalapi.DomainHash, actualHighHash *externalapi.DomainHash, err error) {
 	panic(errors.Errorf("called unimplemented function from test '%s'", f.testName))
 }
 

app/protocol/manager.go

@@ -2,6 +2,9 @@ package protocol
 
 import (
 	"fmt"
+	"github.com/pkg/errors"
+	"sync"
+	"sync/atomic"
 
 	"github.com/kaspanet/kaspad/domain"
 
@@ -17,7 +20,9 @@ import (
 
 // Manager manages the p2p protocol
 type Manager struct {
-	context *flowcontext.FlowContext
+	context          *flowcontext.FlowContext
+	routersWaitGroup sync.WaitGroup
+	isClosed         uint32
 }
 
 // NewManager creates a new instance of the p2p protocol manager
@@ -32,6 +37,18 @@ func NewManager(cfg *config.Config, domain domain.Domain, netAdapter *netadapter
 	return &manager, nil
 }
 
+// Close closes the protocol manager and waits until all p2p flows
+// finish.
+func (m *Manager) Close() {
+	if !atomic.CompareAndSwapUint32(&m.isClosed, 0, 1) {
+		panic(errors.New("The protocol manager was already closed"))
+	}
+
+	atomic.StoreUint32(&m.isClosed, 1)
+	m.context.Close()
+	m.routersWaitGroup.Wait()
+}
+
 // Peers returns the currently active peers
 func (m *Manager) Peers() []*peerpkg.Peer {
 	return m.context.Peers()
@@ -53,11 +70,13 @@ func (m *Manager) AddBlock(block *externalapi.DomainBlock) error {
 	return m.context.AddBlock(block)
 }
 
-func (m *Manager) runFlows(flows []*flow, peer *peerpkg.Peer, errChan <-chan error) error {
+func (m *Manager) runFlows(flows []*flow, peer *peerpkg.Peer, errChan <-chan error, flowsWaitGroup *sync.WaitGroup) error {
+	flowsWaitGroup.Add(len(flows))
 	for _, flow := range flows {
 		executeFunc := flow.executeFunc // extract to new variable so that it's not overwritten
 		spawn(fmt.Sprintf("flow-%s", flow.name), func() {
 			executeFunc(peer)
+			flowsWaitGroup.Done()
 		})
 	}
 

app/protocol/protocol.go

@@ -1,10 +1,10 @@
 package protocol
 
 import (
-	"sync/atomic"
-
 	"github.com/kaspanet/kaspad/app/protocol/flows/rejects"
 	"github.com/kaspanet/kaspad/infrastructure/network/connmanager"
+	"sync"
+	"sync/atomic"
 
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/protocol/flows/addressexchange"
@@ -41,6 +41,13 @@ func (m *Manager) routerInitializer(router *routerpkg.Router, netConnection *net
 	// After flows were registered - spawn a new thread that will wait for connection to finish initializing
 	// and start receiving messages
 	spawn("routerInitializer-runFlows", func() {
+		m.routersWaitGroup.Add(1)
+		defer m.routersWaitGroup.Done()
+
+		if atomic.LoadUint32(&m.isClosed) == 1 {
+			panic(errors.Errorf("tried to initialize router when the protocol manager is closed"))
+		}
+
 		isBanned, err := m.context.ConnectionManager().IsBanned(netConnection)
 		if err != nil && !errors.Is(err, addressmanager.ErrAddressNotFound) {
 			panic(err)
@@ -79,11 +86,17 @@ func (m *Manager) routerInitializer(router *routerpkg.Router, netConnection *net
 
 		removeHandshakeRoutes(router)
 
-		err = m.runFlows(flows, peer, errChan)
+		flowsWaitGroup := &sync.WaitGroup{}
+		err = m.runFlows(flows, peer, errChan, flowsWaitGroup)
 		if err != nil {
 			m.handleError(err, netConnection, router.OutgoingRoute())
+			// We call `flowsWaitGroup.Wait()` in two places instead of deferring, because
+			// we already defer `m.routersWaitGroup.Done()`, so we try to avoid error prone
+			// and confusing use of multiple dependent defers.
+			flowsWaitGroup.Wait()
 			return
 		}
+		flowsWaitGroup.Wait()
 	})
 }
 
@@ -238,7 +251,7 @@ func (m *Manager) registerTransactionRelayFlow(router *routerpkg.Router, isStopp
 	outgoingRoute := router.OutgoingRoute()
 
 	return []*flow{
-		m.registerFlow("HandleRelayedTransactions", router,
+		m.registerFlowWithCapacity("HandleRelayedTransactions", 10_000, router,
 			[]appmessage.MessageCommand{appmessage.CmdInvTransaction, appmessage.CmdTx, appmessage.CmdTransactionNotFound}, isStopping, errChan,
 			func(incomingRoute *routerpkg.Route, peer *peerpkg.Peer) error {
 				return transactionrelay.HandleRelayedTransactions(m.context, incomingRoute, outgoingRoute)
@@ -274,6 +287,24 @@ func (m *Manager) registerFlow(name string, router *routerpkg.Router, messageTyp
 		panic(err)
 	}
 
+	return m.registerFlowForRoute(route, name, isStopping, errChan, initializeFunc)
+}
+
+func (m *Manager) registerFlowWithCapacity(name string, capacity int, router *routerpkg.Router,
+	messageTypes []appmessage.MessageCommand, isStopping *uint32,
+	errChan chan error, initializeFunc flowInitializeFunc) *flow {
+
+	route, err := router.AddIncomingRouteWithCapacity(capacity, messageTypes)
+	if err != nil {
+		panic(err)
+	}
+
+	return m.registerFlowForRoute(route, name, isStopping, errChan, initializeFunc)
+}
+
+func (m *Manager) registerFlowForRoute(route *routerpkg.Route, name string, isStopping *uint32,
+	errChan chan error, initializeFunc flowInitializeFunc) *flow {
+
 	return &flow{
 		name: name,
 		executeFunc: func(peer *peerpkg.Peer) {

app/rpc/manager.go

@@ -69,12 +69,12 @@ func (m *Manager) NotifyBlockAddedToDAG(block *externalapi.DomainBlock, blockIns
 		return err
 	}
 
-	msgBlock := appmessage.DomainBlockToMsgBlock(block)
-	blockVerboseData, err := m.context.BuildBlockVerboseData(block.Header, block, false)
+	rpcBlock := appmessage.DomainBlockToRPCBlock(block)
+	err = m.context.PopulateBlockWithVerboseData(rpcBlock, block.Header, block, false)
 	if err != nil {
 		return err
 	}
-	blockAddedNotification := appmessage.NewBlockAddedNotificationMessage(msgBlock, blockVerboseData)
+	blockAddedNotification := appmessage.NewBlockAddedNotificationMessage(rpcBlock)
 	return m.context.NotificationManager.NotifyBlockAdded(blockAddedNotification)
 }
 

app/rpc/rpccontext/utxos_by_addresses.go

@@ -24,7 +24,7 @@ func ConvertUTXOOutpointEntryPairsToUTXOsByAddressesEntries(address string, pair
 			UTXOEntry: &appmessage.RPCUTXOEntry{
 				Amount:          utxoEntry.Amount(),
 				ScriptPublicKey: &appmessage.RPCScriptPublicKey{Script: hex.EncodeToString(utxoEntry.ScriptPublicKey().Script), Version: utxoEntry.ScriptPublicKey().Version},
-				BlockBlueScore:  utxoEntry.BlockBlueScore(),
+				BlockDAAScore:   utxoEntry.BlockDAAScore(),
 				IsCoinbase:      utxoEntry.IsCoinbase(),
 			},
 		})

app/rpc/rpccontext/verbosedata.go

@@ -2,23 +2,16 @@ package rpccontext
 
 import (
 	"encoding/hex"
-	"fmt"
+	difficultyPackage "github.com/kaspanet/kaspad/util/difficulty"
+	"github.com/pkg/errors"
 	"math"
 	"math/big"
-	"strconv"
-
-	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
-	"github.com/kaspanet/kaspad/infrastructure/logger"
-	"github.com/kaspanet/kaspad/util/difficulty"
-	"github.com/pkg/errors"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 
 	"github.com/kaspanet/kaspad/domain/consensus/utils/estimatedsize"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
 
-	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
-
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
@@ -28,79 +21,6 @@ import (
 // ErrBuildBlockVerboseDataInvalidBlock indicates that a block that was given to BuildBlockVerboseData is invalid.
 var ErrBuildBlockVerboseDataInvalidBlock = errors.New("ErrBuildBlockVerboseDataInvalidBlock")
 
-// BuildBlockVerboseData builds a BlockVerboseData from the given blockHeader.
-// A block may optionally also be given if it's available in the calling context.
-func (ctx *Context) BuildBlockVerboseData(blockHeader externalapi.BlockHeader, block *externalapi.DomainBlock,
-	includeTransactionVerboseData bool) (*appmessage.BlockVerboseData, error) {
-
-	onEnd := logger.LogAndMeasureExecutionTime(log, "BuildBlockVerboseData")
-	defer onEnd()
-
-	hash := consensushashing.HeaderHash(blockHeader)
-
-	blockInfo, err := ctx.Domain.Consensus().GetBlockInfo(hash)
-	if err != nil {
-		return nil, err
-	}
-
-	if blockInfo.BlockStatus == externalapi.StatusInvalid {
-		return nil, errors.Wrap(ErrBuildBlockVerboseDataInvalidBlock, "cannot build verbose data for "+
-			"invalid block")
-	}
-
-	childrenHashes, err := ctx.Domain.Consensus().GetBlockChildren(hash)
-	if err != nil {
-		return nil, err
-	}
-
-	result := &appmessage.BlockVerboseData{
-		Hash:                 hash.String(),
-		Version:              blockHeader.Version(),
-		VersionHex:           fmt.Sprintf("%08x", blockHeader.Version()),
-		HashMerkleRoot:       blockHeader.HashMerkleRoot().String(),
-		AcceptedIDMerkleRoot: blockHeader.AcceptedIDMerkleRoot().String(),
-		UTXOCommitment:       blockHeader.UTXOCommitment().String(),
-		ParentHashes:         hashes.ToStrings(blockHeader.ParentHashes()),
-		ChildrenHashes:       hashes.ToStrings(childrenHashes),
-		Nonce:                blockHeader.Nonce(),
-		Time:                 blockHeader.TimeInMilliseconds(),
-		Bits:                 strconv.FormatInt(int64(blockHeader.Bits()), 16),
-		Difficulty:           ctx.GetDifficultyRatio(blockHeader.Bits(), ctx.Config.ActiveNetParams),
-		BlueScore:            blockInfo.BlueScore,
-		IsHeaderOnly:         blockInfo.BlockStatus == externalapi.StatusHeaderOnly,
-	}
-
-	if blockInfo.BlockStatus != externalapi.StatusHeaderOnly {
-		if block == nil {
-			block, err = ctx.Domain.Consensus().GetBlock(hash)
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		txIDs := make([]string, len(block.Transactions))
-		for i, tx := range block.Transactions {
-			txIDs[i] = consensushashing.TransactionID(tx).String()
-		}
-		result.TxIDs = txIDs
-
-		if includeTransactionVerboseData {
-			transactionVerboseData := make([]*appmessage.TransactionVerboseData, len(block.Transactions))
-			for i, tx := range block.Transactions {
-				txID := consensushashing.TransactionID(tx).String()
-				data, err := ctx.BuildTransactionVerboseData(tx, txID, blockHeader, hash.String())
-				if err != nil {
-					return nil, err
-				}
-				transactionVerboseData[i] = data
-			}
-			result.TransactionVerboseData = transactionVerboseData
-		}
-	}
-
-	return result, nil
-}
-
 // GetDifficultyRatio returns the proof-of-work difficulty as a multiple of the
 // minimum difficulty using the passed bits field from the header of a block.
 func (ctx *Context) GetDifficultyRatio(bits uint32, params *dagconfig.Params) float64 {
@@ -108,7 +28,7 @@ func (ctx *Context) GetDifficultyRatio(bits uint32, params *dagconfig.Params) fl
 	// converted back to a number. Note this is not the same as the proof of
 	// work limit directly because the block difficulty is encoded in a block
 	// with the compact form which loses precision.
-	target := difficulty.CompactToBig(bits)
+	target := difficultyPackage.CompactToBig(bits)
 
 	difficulty := new(big.Rat).SetFrac(params.PowMax, target)
 	diff, _ := difficulty.Float64()
@@ -119,106 +39,125 @@ func (ctx *Context) GetDifficultyRatio(bits uint32, params *dagconfig.Params) fl
 	return diff
 }
 
-// BuildTransactionVerboseData builds a TransactionVerboseData from
-// the given parameters
-func (ctx *Context) BuildTransactionVerboseData(tx *externalapi.DomainTransaction, txID string,
-	blockHeader externalapi.BlockHeader, blockHash string) (
-	*appmessage.TransactionVerboseData, error) {
+// PopulateBlockWithVerboseData populates the given `block` with verbose
+// data from `domainBlockHeader` and optionally from `domainBlock`
+func (ctx *Context) PopulateBlockWithVerboseData(block *appmessage.RPCBlock, domainBlockHeader externalapi.BlockHeader,
+	domainBlock *externalapi.DomainBlock, includeTransactionVerboseData bool) error {
 
-	onEnd := logger.LogAndMeasureExecutionTime(log, "BuildTransactionVerboseData")
-	defer onEnd()
+	blockHash := consensushashing.HeaderHash(domainBlockHeader)
 
-	var payloadHash string
-	if tx.SubnetworkID != subnetworks.SubnetworkIDNative {
-		payloadHash = tx.PayloadHash.String()
+	blockInfo, err := ctx.Domain.Consensus().GetBlockInfo(blockHash)
+	if err != nil {
+		return err
 	}
 
-	txReply := &appmessage.TransactionVerboseData{
-		TxID:                      txID,
-		Hash:                      consensushashing.TransactionHash(tx).String(),
-		Size:                      estimatedsize.TransactionEstimatedSerializedSize(tx),
-		TransactionVerboseInputs:  ctx.buildTransactionVerboseInputs(tx),
-		TransactionVerboseOutputs: ctx.buildTransactionVerboseOutputs(tx, nil),
-		Version:                   tx.Version,
-		LockTime:                  tx.LockTime,
-		SubnetworkID:              tx.SubnetworkID.String(),
-		Gas:                       tx.Gas,
-		PayloadHash:               payloadHash,
-		Payload:                   hex.EncodeToString(tx.Payload),
+	if blockInfo.BlockStatus == externalapi.StatusInvalid {
+		return errors.Wrap(ErrBuildBlockVerboseDataInvalidBlock, "cannot build verbose data for "+
+			"invalid block")
 	}
 
-	if blockHeader != nil {
-		txReply.Time = uint64(blockHeader.TimeInMilliseconds())
-		txReply.BlockTime = uint64(blockHeader.TimeInMilliseconds())
-		txReply.BlockHash = blockHash
+	_, selectedParentHash, childrenHashes, err := ctx.Domain.Consensus().GetBlockRelations(blockHash)
+	if err != nil {
+		return err
 	}
 
-	return txReply, nil
-}
+	block.VerboseData = &appmessage.RPCBlockVerboseData{
+		Hash:               blockHash.String(),
+		Difficulty:         ctx.GetDifficultyRatio(domainBlockHeader.Bits(), ctx.Config.ActiveNetParams),
+		ChildrenHashes:     hashes.ToStrings(childrenHashes),
+		SelectedParentHash: selectedParentHash.String(),
+		IsHeaderOnly:       blockInfo.BlockStatus == externalapi.StatusHeaderOnly,
+		BlueScore:          blockInfo.BlueScore,
+	}
 
-func (ctx *Context) buildTransactionVerboseInputs(tx *externalapi.DomainTransaction) []*appmessage.TransactionVerboseInput {
-	inputs := make([]*appmessage.TransactionVerboseInput, len(tx.Inputs))
-	for i, transactionInput := range tx.Inputs {
-		// The disassembled string will contain [error] inline
-		// if the script doesn't fully parse, so ignore the
-		// error here.
-		disbuf, _ := txscript.DisasmString(constants.MaxScriptPublicKeyVersion, transactionInput.SignatureScript)
+	if blockInfo.BlockStatus == externalapi.StatusHeaderOnly {
+		return nil
+	}
 
-		input := &appmessage.TransactionVerboseInput{}
-		input.TxID = transactionInput.PreviousOutpoint.TransactionID.String()
-		input.OutputIndex = transactionInput.PreviousOutpoint.Index
-		input.Sequence = transactionInput.Sequence
-		input.ScriptSig = &appmessage.ScriptSig{
-			Asm: disbuf,
-			Hex: hex.EncodeToString(transactionInput.SignatureScript),
+	// Get the block if we didn't receive it previously
+	if domainBlock == nil {
+		domainBlock, err = ctx.Domain.Consensus().GetBlock(blockHash)
+		if err != nil {
+			return err
 		}
-		inputs[i] = input
 	}
 
-	return inputs
-}
+	transactionIDs := make([]string, len(domainBlock.Transactions))
+	for i, transaction := range domainBlock.Transactions {
+		transactionIDs[i] = consensushashing.TransactionID(transaction).String()
+	}
+	block.VerboseData.TransactionIDs = transactionIDs
 
-// buildTransactionVerboseOutputs returns a slice of JSON objects for the outputs of the passed
-// transaction.
-func (ctx *Context) buildTransactionVerboseOutputs(tx *externalapi.DomainTransaction, filterAddrMap map[string]struct{}) []*appmessage.TransactionVerboseOutput {
-	outputs := make([]*appmessage.TransactionVerboseOutput, len(tx.Outputs))
-	for i, transactionOutput := range tx.Outputs {
-
-		// Ignore the error here since an error means the script
-		// couldn't parse and there is no additional information about
-		// it anyways.
-		scriptClass, addr, _ := txscript.ExtractScriptPubKeyAddress(
-			transactionOutput.ScriptPublicKey, ctx.Config.ActiveNetParams)
-
-		// Encode the addresses while checking if the address passes the
-		// filter when needed.
-		passesFilter := len(filterAddrMap) == 0
-		var encodedAddr string
-		if addr != nil {
-			encodedAddr = addr.EncodeAddress()
-
-			// If the filter doesn't already pass, make it pass if
-			// the address exists in the filter.
-			if _, exists := filterAddrMap[encodedAddr]; exists {
-				passesFilter = true
+	if includeTransactionVerboseData {
+		for _, transaction := range block.Transactions {
+			err := ctx.PopulateTransactionWithVerboseData(transaction, domainBlockHeader)
+			if err != nil {
+				return err
 			}
 		}
-
-		if !passesFilter {
-			continue
-		}
-
-		output := &appmessage.TransactionVerboseOutput{}
-		output.Index = uint32(i)
-		output.Value = transactionOutput.Value
-		output.ScriptPubKey = &appmessage.ScriptPubKeyResult{
-			Version: transactionOutput.ScriptPublicKey.Version,
-			Address: encodedAddr,
-			Hex:     hex.EncodeToString(transactionOutput.ScriptPublicKey.Script),
-			Type:    scriptClass.String(),
-		}
-		outputs[i] = output
 	}
 
-	return outputs
+	return nil
+}
+
+// PopulateTransactionWithVerboseData populates the given `transaction` with
+// verbose data from `domainTransaction`
+func (ctx *Context) PopulateTransactionWithVerboseData(
+	transaction *appmessage.RPCTransaction, domainBlockHeader externalapi.BlockHeader) error {
+
+	domainTransaction, err := appmessage.RPCTransactionToDomainTransaction(transaction)
+	if err != nil {
+		return err
+	}
+
+	transaction.VerboseData = &appmessage.RPCTransactionVerboseData{
+		TransactionID: consensushashing.TransactionID(domainTransaction).String(),
+		Hash:          consensushashing.TransactionHash(domainTransaction).String(),
+		Size:          estimatedsize.TransactionEstimatedSerializedSize(domainTransaction),
+	}
+	if domainBlockHeader != nil {
+		transaction.VerboseData.BlockHash = consensushashing.HeaderHash(domainBlockHeader).String()
+		transaction.VerboseData.BlockTime = uint64(domainBlockHeader.TimeInMilliseconds())
+	}
+	for _, input := range transaction.Inputs {
+		ctx.populateTransactionInputWithVerboseData(input)
+	}
+	for _, output := range transaction.Outputs {
+		err := ctx.populateTransactionOutputWithVerboseData(output)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (ctx *Context) populateTransactionInputWithVerboseData(transactionInput *appmessage.RPCTransactionInput) {
+	transactionInput.VerboseData = &appmessage.RPCTransactionInputVerboseData{}
+}
+
+func (ctx *Context) populateTransactionOutputWithVerboseData(transactionOutput *appmessage.RPCTransactionOutput) error {
+	scriptPublicKey, err := hex.DecodeString(transactionOutput.ScriptPublicKey.Script)
+	if err != nil {
+		return err
+	}
+	domainScriptPublicKey := &externalapi.ScriptPublicKey{
+		Script:  scriptPublicKey,
+		Version: transactionOutput.ScriptPublicKey.Version,
+	}
+
+	// Ignore the error here since an error means the script
+	// couldn't be parsed and there's no additional information about
+	// it anyways
+	scriptPublicKeyType, scriptPublicKeyAddress, _ := txscript.ExtractScriptPubKeyAddress(
+		domainScriptPublicKey, ctx.Config.ActiveNetParams)
+
+	var encodedScriptPublicKeyAddress string
+	if scriptPublicKeyAddress != nil {
+		encodedScriptPublicKeyAddress = scriptPublicKeyAddress.EncodeAddress()
+	}
+	transactionOutput.VerboseData = &appmessage.RPCTransactionOutputVerboseData{
+		ScriptPublicKeyType:    scriptPublicKeyType.String(),
+		ScriptPublicKeyAddress: encodedScriptPublicKeyAddress,
+	}
+	return nil
 }

app/rpc/rpchandlers/get_block.go

@@ -26,10 +26,12 @@ func HandleGetBlock(context *rpccontext.Context, _ *router.Router, request appme
 		errorMessage.Error = appmessage.RPCErrorf("Block %s not found", hash)
 		return errorMessage, nil
 	}
+	block := &externalapi.DomainBlock{Header: header}
 
 	response := appmessage.NewGetBlockResponseMessage()
+	response.Block = appmessage.DomainBlockToRPCBlock(block)
 
-	blockVerboseData, err := context.BuildBlockVerboseData(header, nil, getBlockRequest.IncludeTransactionVerboseData)
+	err = context.PopulateBlockWithVerboseData(response.Block, header, nil, getBlockRequest.IncludeTransactionVerboseData)
 	if err != nil {
 		if errors.Is(err, rpccontext.ErrBuildBlockVerboseDataInvalidBlock) {
 			errorMessage := &appmessage.GetBlockResponseMessage{}
@@ -39,7 +41,5 @@ func HandleGetBlock(context *rpccontext.Context, _ *router.Router, request appme
 		return nil, err
 	}
 
-	response.BlockVerboseData = blockVerboseData
-
 	return response, nil
 }

app/rpc/rpchandlers/get_block_template.go

@@ -31,12 +31,12 @@ func HandleGetBlockTemplate(context *rpccontext.Context, _ *router.Router, reque
 	if err != nil {
 		return nil, err
 	}
-	msgBlock := appmessage.DomainBlockToMsgBlock(templateBlock)
+	rpcBlock := appmessage.DomainBlockToRPCBlock(templateBlock)
 
 	isSynced, err := context.ProtocolManager.ShouldMine()
 	if err != nil {
 		return nil, err
 	}
 
-	return appmessage.NewGetBlockTemplateResponseMessage(msgBlock, isSynced), nil
+	return appmessage.NewGetBlockTemplateResponseMessage(rpcBlock, isSynced), nil
 }

app/rpc/rpchandlers/get_blocks.go

@@ -18,8 +18,8 @@ const (
 func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appmessage.Message) (appmessage.Message, error) {
 	getBlocksRequest := request.(*appmessage.GetBlocksRequestMessage)
 
-	// Validate that user didn't set IncludeTransactionVerboseData without setting IncludeBlockVerboseData
-	if !getBlocksRequest.IncludeBlockVerboseData && getBlocksRequest.IncludeTransactionVerboseData {
+	// Validate that user didn't set IncludeTransactionVerboseData without setting IncludeBlocks
+	if !getBlocksRequest.IncludeBlocks && getBlocksRequest.IncludeTransactionVerboseData {
 		return &appmessage.GetBlocksResponseMessage{
 			Error: appmessage.RPCErrorf(
 				"If includeTransactionVerboseData is set, then includeBlockVerboseData must be set as well"),
@@ -55,8 +55,7 @@ func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appm
 	if err != nil {
 		return nil, err
 	}
-	blockHashes, err := context.Domain.Consensus().GetHashesBetween(
-		lowHash, virtualSelectedParent, maxBlocksInGetBlocksResponse)
+	blockHashes, highHash, err := context.Domain.Consensus().GetHashesBetween(lowHash, virtualSelectedParent, maxBlocksInGetBlocksResponse)
 	if err != nil {
 		return nil, err
 	}
@@ -64,9 +63,10 @@ func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appm
 	// prepend low hash to make it inclusive
 	blockHashes = append([]*externalapi.DomainHash{lowHash}, blockHashes...)
 
-	// If there are no maxBlocksInGetBlocksResponse between lowHash and virtualSelectedParent -
-	// add virtualSelectedParent's anticone
-	if len(blockHashes) < maxBlocksInGetBlocksResponse {
+	// If the high hash is equal to virtualSelectedParent it means GetHashesBetween didn't skip any hashes, and
+	// there's space to add the virtualSelectedParent's anticone, otherwise you can't add the anticone because
+	// there's no guarantee that all of the anticone root ancestors will be present.
+	if highHash.Equal(virtualSelectedParent) {
 		virtualSelectedParentAnticone, err := context.Domain.Consensus().Anticone(virtualSelectedParent)
 		if err != nil {
 			return nil, err
@@ -81,26 +81,23 @@ func HandleGetBlocks(context *rpccontext.Context, _ *router.Router, request appm
 	}
 
 	// Prepare the response
-	response := &appmessage.GetBlocksResponseMessage{
-		BlockHashes: hashes.ToStrings(blockHashes),
-	}
-
-	// Retrieve all block data in case BlockVerboseData was requested
-	if getBlocksRequest.IncludeBlockVerboseData {
-		response.BlockVerboseData = make([]*appmessage.BlockVerboseData, len(blockHashes))
+	response := appmessage.NewGetBlocksResponseMessage()
+	response.BlockHashes = hashes.ToStrings(blockHashes)
+	if getBlocksRequest.IncludeBlocks {
+		blocks := make([]*appmessage.RPCBlock, len(blockHashes))
 		for i, blockHash := range blockHashes {
 			blockHeader, err := context.Domain.Consensus().GetBlockHeader(blockHash)
 			if err != nil {
 				return nil, err
 			}
-			blockVerboseData, err := context.BuildBlockVerboseData(blockHeader, nil,
-				getBlocksRequest.IncludeTransactionVerboseData)
+			block := &externalapi.DomainBlock{Header: blockHeader}
+			blocks[i] = appmessage.DomainBlockToRPCBlock(block)
+			err = context.PopulateBlockWithVerboseData(blocks[i], blockHeader, nil, getBlocksRequest.IncludeTransactionVerboseData)
 			if err != nil {
 				return nil, err
 			}
-
-			response.BlockVerboseData[i] = blockVerboseData
 		}
 	}
+
 	return response, nil
 }

app/rpc/rpchandlers/get_blocks_test.go

@@ -5,6 +5,8 @@ import (
 	"sort"
 	"testing"
 
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/rpc/rpccontext"
 	"github.com/kaspanet/kaspad/app/rpc/rpchandlers"
@@ -27,6 +29,8 @@ func (d fakeDomain) MiningManager() miningmanager.MiningManager { return nil }
 
 func TestHandleGetBlocks(t *testing.T) {
 	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {
+		stagingArea := model.NewStagingArea()
+
 		factory := consensus.NewFactory()
 		tc, teardown, err := factory.NewTestConsensus(params, false, "TestHandleGetBlocks")
 		if err != nil {
@@ -55,7 +59,7 @@ func TestHandleGetBlocks(t *testing.T) {
 			antipast := make([]*externalapi.DomainHash, 0, len(slice))
 
 			for _, blockHash := range slice {
-				isInPastOfPovBlock, err := tc.DAGTopologyManager().IsAncestorOf(blockHash, povBlock)
+				isInPastOfPovBlock, err := tc.DAGTopologyManager().IsAncestorOf(stagingArea, blockHash, povBlock)
 				if err != nil {
 					t.Fatalf("Failed doing reachability check: '%v'", err)
 				}
@@ -87,7 +91,7 @@ func TestHandleGetBlocks(t *testing.T) {
 				}
 				splitBlocks = append(splitBlocks, blockHash)
 			}
-			sort.Sort(sort.Reverse(testutils.NewTestGhostDAGSorter(splitBlocks, tc, t)))
+			sort.Sort(sort.Reverse(testutils.NewTestGhostDAGSorter(stagingArea, splitBlocks, tc, t)))
 			restOfSplitBlocks, selectedParent := splitBlocks[:len(splitBlocks)-1], splitBlocks[len(splitBlocks)-1]
 			expectedOrder = append(expectedOrder, selectedParent)
 			expectedOrder = append(expectedOrder, restOfSplitBlocks...)

app/rpc/rpchandlers/get_info.go

@@ -8,6 +8,10 @@ import (
 
 // HandleGetInfo handles the respectively named RPC command
 func HandleGetInfo(context *rpccontext.Context, _ *router.Router, _ appmessage.Message) (appmessage.Message, error) {
-	response := appmessage.NewGetInfoResponseMessage(context.NetAdapter.ID().String())
+	response := appmessage.NewGetInfoResponseMessage(
+		context.NetAdapter.ID().String(),
+		uint64(context.Domain.MiningManager().TransactionCount()),
+	)
+
 	return response, nil
 }

app/rpc/rpchandlers/get_mempool_entries.go

@@ -3,25 +3,22 @@ package rpchandlers
 import (
 	"github.com/kaspanet/kaspad/app/appmessage"
 	"github.com/kaspanet/kaspad/app/rpc/rpccontext"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
 	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
 )
 
 // HandleGetMempoolEntries handles the respectively named RPC command
 func HandleGetMempoolEntries(context *rpccontext.Context, _ *router.Router, _ appmessage.Message) (appmessage.Message, error) {
-
 	transactions := context.Domain.MiningManager().AllTransactions()
 	entries := make([]*appmessage.MempoolEntry, 0, len(transactions))
-	for _, tx := range transactions {
-		transactionVerboseData, err := context.BuildTransactionVerboseData(
-			tx, consensushashing.TransactionID(tx).String(), nil, "")
+	for _, transaction := range transactions {
+		rpcTransaction := appmessage.DomainTransactionToRPCTransaction(transaction)
+		err := context.PopulateTransactionWithVerboseData(rpcTransaction, nil)
 		if err != nil {
 			return nil, err
 		}
-
 		entries = append(entries, &appmessage.MempoolEntry{
-			Fee:                    tx.Fee,
-			TransactionVerboseData: transactionVerboseData,
+			Fee:         transaction.Fee,
+			Transaction: rpcTransaction,
 		})
 	}
 

app/rpc/rpchandlers/get_mempool_entry.go

@@ -24,12 +24,11 @@ func HandleGetMempoolEntry(context *rpccontext.Context, _ *router.Router, reques
 		errorMessage.Error = appmessage.RPCErrorf("Transaction %s was not found", transactionID)
 		return errorMessage, nil
 	}
-
-	transactionVerboseData, err := context.BuildTransactionVerboseData(
-		transaction, getMempoolEntryRequest.TxID, nil, "")
+	rpcTransaction := appmessage.DomainTransactionToRPCTransaction(transaction)
+	err = context.PopulateTransactionWithVerboseData(rpcTransaction, nil)
 	if err != nil {
 		return nil, err
 	}
 
-	return appmessage.NewGetMempoolEntryResponseMessage(transaction.Fee, transactionVerboseData), nil
+	return appmessage.NewGetMempoolEntryResponseMessage(transaction.Fee, rpcTransaction), nil
 }

app/rpc/rpchandlers/submit_block.go

@@ -14,9 +14,6 @@ import (
 func HandleSubmitBlock(context *rpccontext.Context, _ *router.Router, request appmessage.Message) (appmessage.Message, error) {
 	submitBlockRequest := request.(*appmessage.SubmitBlockRequestMessage)
 
-	msgBlock := submitBlockRequest.Block
-	domainBlock := appmessage.MsgBlockToDomainBlock(msgBlock)
-
 	if context.ProtocolManager.IsIBDRunning() {
 		return &appmessage.SubmitBlockResponseMessage{
 			Error:        appmessage.RPCErrorf("Block not submitted - IBD is running"),
@@ -24,7 +21,15 @@ func HandleSubmitBlock(context *rpccontext.Context, _ *router.Router, request ap
 		}, nil
 	}
 
-	err := context.ProtocolManager.AddBlock(domainBlock)
+	domainBlock, err := appmessage.RPCBlockToDomainBlock(submitBlockRequest.Block)
+	if err != nil {
+		return &appmessage.SubmitBlockResponseMessage{
+			Error:        appmessage.RPCErrorf("Could not parse block: %s", err),
+			RejectReason: appmessage.RejectReasonBlockInvalid,
+		}, nil
+	}
+
+	err = context.ProtocolManager.AddBlock(domainBlock)
 	if err != nil {
 		isProtocolOrRuleError := errors.As(err, &ruleerrors.RuleError{}) || errors.As(err, &protocolerrors.ProtocolError{})
 		if !isProtocolOrRuleError {

app/rpc/rpchandlers/unban.go

@@ -16,7 +16,7 @@ func HandleUnban(context *rpccontext.Context, _ *router.Router, request appmessa
 		errorMessage.Error = appmessage.RPCErrorf("Could not parse IP %s", unbanRequest.IP)
 		return errorMessage, nil
 	}
-	err := context.AddressManager.Unban(appmessage.NewNetAddressIPPort(ip, 0, 0))
+	err := context.AddressManager.Unban(appmessage.NewNetAddressIPPort(ip, 0))
 	if err != nil {
 		errorMessage := &appmessage.UnbanResponseMessage{}
 		errorMessage.Error = appmessage.RPCErrorf("Could not unban IP: %s", err)

cmd/kaspaminer/config.go

@@ -24,9 +24,9 @@ const (
 
 var (
 	// Default configuration options
-	defaultHomeDir    = util.AppDataDir("kaspaminer", false)
-	defaultLogFile    = filepath.Join(defaultHomeDir, defaultLogFilename)
-	defaultErrLogFile = filepath.Join(defaultHomeDir, defaultErrLogFilename)
+	defaultAppDir     = util.AppDir("kaspaminer", false)
+	defaultLogFile    = filepath.Join(defaultAppDir, defaultLogFilename)
+	defaultErrLogFile = filepath.Join(defaultAppDir, defaultErrLogFilename)
 	defaultRPCServer  = "localhost"
 )
 

cmd/kaspaminer/mineloop.go

@@ -44,34 +44,32 @@ func mineLoop(client *minerClient, numberOfBlocks uint64, targetBlocksPerSecond
 
 	spawn("blocksLoop", func() {
 		const windowSize = 10
-		var expectedDurationForWindow time.Duration
-		var windowExpectedEndTime time.Time
 		hasBlockRateTarget := targetBlocksPerSecond != 0
+		var windowTicker, blockTicker *time.Ticker
+		// We use tickers to limit the block rate:
+		// 1. windowTicker -> makes sure that the last windowSize blocks take at least windowSize*targetBlocksPerSecond.
+		// 2. blockTicker -> makes sure that each block takes at least targetBlocksPerSecond/windowSize.
+		// that way we both allow for fluctuation in block rate but also make sure they're not too big (by an order of magnitude)
 		if hasBlockRateTarget {
-			expectedDurationForWindow = time.Duration(float64(windowSize)/targetBlocksPerSecond) * time.Second
-			windowExpectedEndTime = time.Now().Add(expectedDurationForWindow)
+			windowRate := time.Duration(float64(time.Second) / (targetBlocksPerSecond / windowSize))
+			blockRate := time.Duration(float64(time.Second) / (targetBlocksPerSecond * windowSize))
+			log.Infof("Minimum average time per %d blocks: %s, smaller minimum time per block: %s", windowSize, windowRate, blockRate)
+			windowTicker = time.NewTicker(windowRate)
+			blockTicker = time.NewTicker(blockRate)
+			defer windowTicker.Stop()
+			defer blockTicker.Stop()
 		}
-		blockInWindowIndex := 0
-
-		sleepTime := 0 * time.Second
-
-		for {
+		windowStart := time.Now()
+		for blockIndex := 1; ; blockIndex++ {
 			foundBlockChan <- mineNextBlock(mineWhenNotSynced)
-
 			if hasBlockRateTarget {
-				blockInWindowIndex++
-				if blockInWindowIndex == windowSize-1 {
-					deviation := windowExpectedEndTime.Sub(time.Now())
-					if deviation > 0 {
-						sleepTime = deviation / windowSize
-						log.Infof("Finished to mine %d blocks %s earlier than expected. Setting the miner "+
-							"to sleep %s between blocks to compensate",
-							windowSize, deviation, sleepTime)
-					}
-					blockInWindowIndex = 0
-					windowExpectedEndTime = time.Now().Add(expectedDurationForWindow)
+				<-blockTicker.C
+				if (blockIndex % windowSize) == 0 {
+					tickerStart := time.Now()
+					<-windowTicker.C
+					log.Infof("Finished mining %d blocks in: %s. slept for: %s", windowSize, time.Since(windowStart), time.Since(tickerStart))
+					windowStart = time.Now()
 				}
-				time.Sleep(sleepTime)
 			}
 		}
 	})
@@ -200,7 +198,11 @@ func templatesLoop(client *minerClient, miningAddr util.Address, errChan chan er
 			errChan <- errors.Wrapf(err, "Error getting block template from %s", client.safeRPCClient().Address())
 			return
 		}
-		templatemanager.Set(template)
+		err = templatemanager.Set(template)
+		if err != nil {
+			errChan <- errors.Wrapf(err, "Error setting block template from %s", client.safeRPCClient().Address())
+			return
+		}
 	}
 
 	getBlockTemplate()

cmd/kaspaminer/templatemanager/templatemanager.go

@@ -23,10 +23,14 @@ func Get() (*externalapi.DomainBlock, bool) {
 }
 
 // Set sets the current template to work on
-func Set(template *appmessage.GetBlockTemplateResponseMessage) {
-	block := appmessage.MsgBlockToDomainBlock(template.MsgBlock)
+func Set(template *appmessage.GetBlockTemplateResponseMessage) error {
+	block, err := appmessage.RPCBlockToDomainBlock(template.Block)
+	if err != nil {
+		return err
+	}
 	lock.Lock()
 	defer lock.Unlock()
 	currentTemplate = block
 	isSynced = template.IsSynced
+	return nil
 }

cmd/kaspawallet/balance.go

@@ -2,17 +2,28 @@ package main
 
 import (
 	"fmt"
-	"github.com/kaspanet/kaspad/infrastructure/network/rpcclient"
-
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/keys"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
 	"github.com/kaspanet/kaspad/util"
 )
 
 func balance(conf *balanceConfig) error {
-	client, err := rpcclient.NewRPCClient(conf.RPCServer)
+	client, err := connectToRPC(conf.NetParams(), conf.RPCServer)
 	if err != nil {
 		return err
 	}
-	getUTXOsByAddressesResponse, err := client.GetUTXOsByAddresses([]string{conf.Address})
+
+	keysFile, err := keys.ReadKeysFile(conf.KeysFile)
+	if err != nil {
+		return err
+	}
+
+	addr, err := libkaspawallet.Address(conf.NetParams(), keysFile.PublicKeys, keysFile.MinimumSignatures)
+	if err != nil {
+		return err
+	}
+
+	getUTXOsByAddressesResponse, err := client.GetUTXOsByAddresses([]string{addr.String()})
 	if err != nil {
 		return err
 	}

cmd/kaspawallet/broadcast.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+)
+
+func broadcast(conf *broadcastConfig) error {
+	client, err := connectToRPC(conf.NetParams(), conf.RPCServer)
+	if err != nil {
+		return err
+	}
+
+	psTxBytes, err := hex.DecodeString(conf.Transaction)
+	if err != nil {
+		return err
+	}
+
+	tx, err := libkaspawallet.ExtractTransaction(psTxBytes)
+	if err != nil {
+		return err
+	}
+
+	transactionID, err := sendTransaction(client, tx)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Transaction was sent successfully")
+	fmt.Printf("Transaction ID: \t%s\n", transactionID)
+
+	return nil
+}

cmd/kaspawallet/common.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/domain/dagconfig"
+	"github.com/kaspanet/kaspad/infrastructure/network/rpcclient"
+	"os"
+)
+
+func isUTXOSpendable(entry *appmessage.UTXOsByAddressesEntry, virtualSelectedParentBlueScore uint64, coinbaseMaturity uint64) bool {
+	if !entry.UTXOEntry.IsCoinbase {
+		return true
+	}
+	blockBlueScore := entry.UTXOEntry.BlockDAAScore
+	// TODO: Check for a better alternative than virtualSelectedParentBlueScore
+	return blockBlueScore+coinbaseMaturity < virtualSelectedParentBlueScore
+}
+
+func printErrorAndExit(err error) {
+	fmt.Fprintf(os.Stderr, "%s\n", err)
+	os.Exit(1)
+}
+
+func connectToRPC(params *dagconfig.Params, rpcServer string) (*rpcclient.RPCClient, error) {
+	rpcAddress, err := params.NormalizeRPCServerAddress(rpcServer)
+	if err != nil {
+		return nil, err
+	}
+
+	return rpcclient.NewRPCClient(rpcAddress)
+}

cmd/kaspawallet/config.go

@@ -0,0 +1,161 @@
+package main
+
+import (
+	"github.com/kaspanet/kaspad/infrastructure/config"
+	"github.com/pkg/errors"
+	"os"
+
+	"github.com/jessevdk/go-flags"
+)
+
+const (
+	createSubCmd                    = "create"
+	balanceSubCmd                   = "balance"
+	sendSubCmd                      = "send"
+	createUnsignedTransactionSubCmd = "createUnsignedTransaction"
+	signSubCmd                      = "sign"
+	broadcastSubCmd                 = "broadcast"
+)
+
+type configFlags struct {
+	config.NetworkFlags
+}
+
+type createConfig struct {
+	KeysFile          string `long:"keys-file" short:"f" description:"Keys file location (only if different from default)"`
+	MinimumSignatures uint32 `long:"min-signatures" short:"m" description:"Minimum required signatures" default:"1"`
+	NumPrivateKeys    uint32 `long:"num-private-keys" short:"k" description:"Number of private keys to generate" default:"1"`
+	NumPublicKeys     uint32 `long:"num-public-keys" short:"n" description:"Total number of keys" default:"1"`
+	config.NetworkFlags
+}
+
+type balanceConfig struct {
+	KeysFile  string `long:"keys-file" short:"f" description:"Keys file location (only if different from default)"`
+	RPCServer string `long:"rpcserver" short:"s" description:"RPC server to connect to"`
+	config.NetworkFlags
+}
+
+type sendConfig struct {
+	KeysFile   string  `long:"keys-file" short:"f" description:"Keys file location (only if different from default)"`
+	RPCServer  string  `long:"rpcserver" short:"s" description:"RPC server to connect to"`
+	ToAddress  string  `long:"to-address" short:"t" description:"The public address to send Kaspa to" required:"true"`
+	SendAmount float64 `long:"send-amount" short:"v" description:"An amount to send in Kaspa (e.g. 1234.12345678)" required:"true"`
+	config.NetworkFlags
+}
+
+type createUnsignedTransactionConfig struct {
+	KeysFile   string  `long:"keys-file" short:"f" description:"Keys file location (only if different from default)"`
+	RPCServer  string  `long:"rpcserver" short:"s" description:"RPC server to connect to"`
+	ToAddress  string  `long:"to-address" short:"t" description:"The public address to send Kaspa to" required:"true"`
+	SendAmount float64 `long:"send-amount" short:"v" description:"An amount to send in Kaspa (e.g. 1234.12345678)" required:"true"`
+	config.NetworkFlags
+}
+
+type signConfig struct {
+	KeysFile    string `long:"keys-file" short:"f" description:"Keys file location (only if different from default)"`
+	Transaction string `long:"transaction" short:"t" description:"The unsigned transaction to sign on (encoded in hex)" required:"true"`
+	config.NetworkFlags
+}
+
+type broadcastConfig struct {
+	RPCServer   string `long:"rpcserver" short:"s" description:"RPC server to connect to"`
+	Transaction string `long:"transaction" short:"t" description:"The signed transaction to broadcast (encoded in hex)" required:"true"`
+	config.NetworkFlags
+}
+
+func parseCommandLine() (subCommand string, config interface{}) {
+	cfg := &configFlags{}
+	parser := flags.NewParser(cfg, flags.PrintErrors|flags.HelpFlag)
+
+	createConf := &createConfig{}
+	parser.AddCommand(createSubCmd, "Creates a new wallet",
+		"Creates a private key and 3 public addresses, one for each of MainNet, TestNet and DevNet", createConf)
+
+	balanceConf := &balanceConfig{}
+	parser.AddCommand(balanceSubCmd, "Shows the balance of a public address",
+		"Shows the balance for a public address in Kaspa", balanceConf)
+
+	sendConf := &sendConfig{}
+	parser.AddCommand(sendSubCmd, "Sends a Kaspa transaction to a public address",
+		"Sends a Kaspa transaction to a public address", sendConf)
+
+	createUnsignedTransactionConf := &createUnsignedTransactionConfig{}
+	parser.AddCommand(createUnsignedTransactionSubCmd, "Create an unsigned Kaspa transaction",
+		"Create an unsigned Kaspa transaction", createUnsignedTransactionConf)
+
+	signConf := &signConfig{}
+	parser.AddCommand(signSubCmd, "Sign the given partially signed transaction",
+		"Sign the given partially signed transaction", signConf)
+
+	broadcastConf := &broadcastConfig{}
+	parser.AddCommand(broadcastSubCmd, "Broadcast the given transaction",
+		"Broadcast the given transaction", broadcastConf)
+
+	_, err := parser.Parse()
+
+	if err != nil {
+		var flagsErr *flags.Error
+		if ok := errors.As(err, &flagsErr); ok && flagsErr.Type == flags.ErrHelp {
+			os.Exit(0)
+		} else {
+			os.Exit(1)
+		}
+		return "", nil
+	}
+
+	switch parser.Command.Active.Name {
+	case createSubCmd:
+		combineNetworkFlags(&createConf.NetworkFlags, &cfg.NetworkFlags)
+		err := createConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = createConf
+	case balanceSubCmd:
+		combineNetworkFlags(&balanceConf.NetworkFlags, &cfg.NetworkFlags)
+		err := balanceConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = balanceConf
+	case sendSubCmd:
+		combineNetworkFlags(&sendConf.NetworkFlags, &cfg.NetworkFlags)
+		err := sendConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = sendConf
+	case createUnsignedTransactionSubCmd:
+		combineNetworkFlags(&createUnsignedTransactionConf.NetworkFlags, &cfg.NetworkFlags)
+		err := createUnsignedTransactionConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = createUnsignedTransactionConf
+	case signSubCmd:
+		combineNetworkFlags(&signConf.NetworkFlags, &cfg.NetworkFlags)
+		err := signConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = signConf
+	case broadcastSubCmd:
+		combineNetworkFlags(&broadcastConf.NetworkFlags, &cfg.NetworkFlags)
+		err := broadcastConf.ResolveNetwork(parser)
+		if err != nil {
+			printErrorAndExit(err)
+		}
+		config = broadcastConf
+	}
+
+	return parser.Command.Active.Name, config
+}
+
+func combineNetworkFlags(dst, src *config.NetworkFlags) {
+	dst.Testnet = dst.Testnet || src.Testnet
+	dst.Simnet = dst.Simnet || src.Simnet
+	dst.Devnet = dst.Devnet || src.Devnet
+	if dst.OverrideDAGParamsFile == "" {
+		dst.OverrideDAGParamsFile = src.OverrideDAGParamsFile
+	}
+}

cmd/kaspawallet/create.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"bufio"
+	"encoding/hex"
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/keys"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+	"github.com/pkg/errors"
+	"os"
+)
+
+func create(conf *createConfig) error {
+	encryptedPrivateKeys, publicKeys, err := keys.CreateKeyPairs(conf.NumPrivateKeys)
+	if err != nil {
+		return err
+	}
+
+	for i, publicKey := range publicKeys {
+		fmt.Printf("Public key of private key #%d:\n%x\n\n", i+1, publicKey)
+	}
+
+	reader := bufio.NewReader(os.Stdin)
+	for i := conf.NumPrivateKeys; i < conf.NumPublicKeys; i++ {
+		fmt.Printf("Enter public key #%d here:\n", i+1)
+		line, isPrefix, err := reader.ReadLine()
+		if err != nil {
+			return err
+		}
+
+		fmt.Println()
+
+		if isPrefix {
+			return errors.Errorf("Public key is too long")
+		}
+
+		publicKey, err := hex.DecodeString(string(line))
+		if err != nil {
+			return err
+		}
+
+		publicKeys = append(publicKeys, publicKey)
+	}
+
+	err = keys.WriteKeysFile(conf.KeysFile, encryptedPrivateKeys, publicKeys, conf.MinimumSignatures)
+	if err != nil {
+		return err
+	}
+
+	keysFile, err := keys.ReadKeysFile(conf.KeysFile)
+	if err != nil {
+		return err
+	}
+
+	addr, err := libkaspawallet.Address(conf.NetParams(), keysFile.PublicKeys, keysFile.MinimumSignatures)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("The wallet address is:\n%s\n", addr)
+	return nil
+}

cmd/kaspawallet/create_unsigned_tx.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/keys"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+	"github.com/kaspanet/kaspad/util"
+)
+
+func createUnsignedTransaction(conf *createUnsignedTransactionConfig) error {
+	keysFile, err := keys.ReadKeysFile(conf.KeysFile)
+	if err != nil {
+		return err
+	}
+
+	toAddress, err := util.DecodeAddress(conf.ToAddress, conf.NetParams().Prefix)
+	if err != nil {
+		return err
+	}
+
+	fromAddress, err := libkaspawallet.Address(conf.NetParams(), keysFile.PublicKeys, keysFile.MinimumSignatures)
+	if err != nil {
+		return err
+	}
+
+	client, err := connectToRPC(conf.NetParams(), conf.RPCServer)
+	if err != nil {
+		return err
+	}
+	utxos, err := fetchSpendableUTXOs(conf.NetParams(), client, fromAddress.String())
+	if err != nil {
+		return err
+	}
+
+	sendAmountSompi := uint64(conf.SendAmount * util.SompiPerKaspa)
+
+	const feePerInput = 1000
+	selectedUTXOs, changeSompi, err := selectUTXOs(utxos, sendAmountSompi, feePerInput)
+	if err != nil {
+		return err
+	}
+
+	psTx, err := libkaspawallet.CreateUnsignedTransaction(keysFile.PublicKeys, keysFile.MinimumSignatures, []*libkaspawallet.Payment{{
+		Address: toAddress,
+		Amount:  sendAmountSompi,
+	}, {
+		Address: fromAddress,
+		Amount:  changeSompi,
+	}}, selectedUTXOs)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Created unsigned transaction")
+	fmt.Println(hex.EncodeToString(psTx))
+	return nil
+}

cmd/kaspawallet/keys/create.go

@@ -0,0 +1,72 @@
+package keys
+
+import (
+	"crypto/rand"
+	"crypto/subtle"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+	"github.com/pkg/errors"
+)
+
+// CreateKeyPairs generates `numKeys` number of key pairs.
+func CreateKeyPairs(numKeys uint32) (encryptedPrivateKeys []*EncryptedPrivateKey, publicKeys [][]byte, err error) {
+	password := getPassword("Enter password for the key file:")
+	confirmPassword := getPassword("Confirm password:")
+
+	if subtle.ConstantTimeCompare(password, confirmPassword) != 1 {
+		return nil, nil, errors.New("Passwords are not identical")
+	}
+
+	encryptedPrivateKeys = make([]*EncryptedPrivateKey, 0, numKeys)
+	for i := uint32(0); i < numKeys; i++ {
+		privateKey, publicKey, err := libkaspawallet.CreateKeyPair()
+		if err != nil {
+			return nil, nil, err
+		}
+
+		publicKeys = append(publicKeys, publicKey)
+
+		encryptedPrivateKey, err := encryptPrivateKey(privateKey, password)
+		if err != nil {
+			return nil, nil, err
+		}
+		encryptedPrivateKeys = append(encryptedPrivateKeys, encryptedPrivateKey)
+	}
+
+	return encryptedPrivateKeys, publicKeys, nil
+}
+
+func generateSalt() ([]byte, error) {
+	salt := make([]byte, 16)
+	_, err := rand.Read(salt)
+	if err != nil {
+		return nil, err
+	}
+
+	return salt, nil
+}
+
+func encryptPrivateKey(privateKey []byte, password []byte) (*EncryptedPrivateKey, error) {
+	salt, err := generateSalt()
+	if err != nil {
+		return nil, err
+	}
+
+	aead, err := getAEAD(password, salt)
+	if err != nil {
+		return nil, err
+	}
+
+	// Select a random nonce, and leave capacity for the ciphertext.
+	nonce := make([]byte, aead.NonceSize(), aead.NonceSize()+len(privateKey)+aead.Overhead())
+	if _, err := rand.Read(nonce); err != nil {
+		return nil, err
+	}
+
+	// Encrypt the message and append the ciphertext to the nonce.
+	cipher := aead.Seal(nonce, nonce, privateKey, nil)
+
+	return &EncryptedPrivateKey{
+		cipher: cipher,
+		salt:   salt,
+	}, nil
+}

cmd/kaspawallet/keys/get_password.go

@@ -0,0 +1,41 @@
+package keys
+
+import (
+	"fmt"
+	"golang.org/x/term"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+// getPassword was adapted from https://gist.github.com/jlinoff/e8e26b4ffa38d379c7f1891fd174a6d0#file-getpassword2-go
+func getPassword(prompt string) []byte {
+	// Get the initial state of the terminal.
+	initialTermState, e1 := term.GetState(syscall.Stdin)
+	if e1 != nil {
+		panic(e1)
+	}
+
+	// Restore it in the event of an interrupt.
+	// CITATION: Konstantin Shaposhnikov - https://groups.google.com/forum/#!topic/golang-nuts/kTVAbtee9UA
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt, os.Kill)
+	go func() {
+		<-c
+		_ = term.Restore(syscall.Stdin, initialTermState)
+		os.Exit(1)
+	}()
+
+	// Now get the password.
+	fmt.Print(prompt)
+	p, err := term.ReadPassword(syscall.Stdin)
+	fmt.Println()
+	if err != nil {
+		panic(err)
+	}
+
+	// Stop looking for ^C on the channel.
+	signal.Stop(c)
+
+	return p
+}

cmd/kaspawallet/keys/keys.go

@@ -0,0 +1,245 @@
+package keys
+
+import (
+	"bufio"
+	"crypto/cipher"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"github.com/kaspanet/kaspad/util"
+	"github.com/pkg/errors"
+	"golang.org/x/crypto/argon2"
+	"golang.org/x/crypto/chacha20poly1305"
+	"os"
+	"path/filepath"
+	"runtime"
+)
+
+var (
+	defaultAppDir   = util.AppDir("kaspawallet", false)
+	defaultKeysFile = filepath.Join(defaultAppDir, "keys.json")
+)
+
+type encryptedPrivateKeyJSON struct {
+	Cipher string `json:"cipher"`
+	Salt   string `json:"salt"`
+}
+
+type keysFileJSON struct {
+	EncryptedPrivateKeys []*encryptedPrivateKeyJSON `json:"encryptedPrivateKeys"`
+	PublicKeys           []string                   `json:"publicKeys"`
+	MinimumSignatures    uint32                     `json:"minimumSignatures"`
+}
+
+// EncryptedPrivateKey represents an encrypted private key
+type EncryptedPrivateKey struct {
+	cipher []byte
+	salt   []byte
+}
+
+// Data holds all the data related to the wallet keys
+type Data struct {
+	encryptedPrivateKeys []*EncryptedPrivateKey
+	PublicKeys           [][]byte
+	MinimumSignatures    uint32
+}
+
+func (d *Data) toJSON() *keysFileJSON {
+	encryptedPrivateKeysJSON := make([]*encryptedPrivateKeyJSON, len(d.encryptedPrivateKeys))
+	for i, encryptedPrivateKey := range d.encryptedPrivateKeys {
+		encryptedPrivateKeysJSON[i] = &encryptedPrivateKeyJSON{
+			Cipher: hex.EncodeToString(encryptedPrivateKey.cipher),
+			Salt:   hex.EncodeToString(encryptedPrivateKey.salt),
+		}
+	}
+
+	publicKeysHex := make([]string, len(d.PublicKeys))
+	for i, publicKey := range d.PublicKeys {
+		publicKeysHex[i] = hex.EncodeToString(publicKey)
+	}
+
+	return &keysFileJSON{
+		EncryptedPrivateKeys: encryptedPrivateKeysJSON,
+		PublicKeys:           publicKeysHex,
+		MinimumSignatures:    d.MinimumSignatures,
+	}
+}
+
+func (d *Data) fromJSON(kfj *keysFileJSON) error {
+	d.MinimumSignatures = kfj.MinimumSignatures
+
+	d.encryptedPrivateKeys = make([]*EncryptedPrivateKey, len(kfj.EncryptedPrivateKeys))
+	for i, encryptedPrivateKeyJSON := range kfj.EncryptedPrivateKeys {
+		cipher, err := hex.DecodeString(encryptedPrivateKeyJSON.Cipher)
+		if err != nil {
+			return err
+		}
+
+		salt, err := hex.DecodeString(encryptedPrivateKeyJSON.Salt)
+		if err != nil {
+			return err
+		}
+
+		d.encryptedPrivateKeys[i] = &EncryptedPrivateKey{
+			cipher: cipher,
+			salt:   salt,
+		}
+	}
+
+	d.PublicKeys = make([][]byte, len(kfj.PublicKeys))
+	for i, publicKey := range kfj.PublicKeys {
+		var err error
+		d.PublicKeys[i], err = hex.DecodeString(publicKey)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// DecryptPrivateKeys asks the user to enter the password for the private keys and
+// returns the decrypted private keys.
+func (d *Data) DecryptPrivateKeys() ([][]byte, error) {
+	password := getPassword("Password:")
+	privateKeys := make([][]byte, len(d.encryptedPrivateKeys))
+	for i, encryptedPrivateKey := range d.encryptedPrivateKeys {
+		var err error
+		privateKeys[i], err = decryptPrivateKey(encryptedPrivateKey, password)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return privateKeys, nil
+}
+
+// ReadKeysFile returns the data related to the keys file
+func ReadKeysFile(path string) (*Data, error) {
+	if path == "" {
+		path = defaultKeysFile
+	}
+
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+
+	decoder := json.NewDecoder(file)
+	decoder.DisallowUnknownFields()
+	decodedFile := &keysFileJSON{}
+	err = decoder.Decode(&decodedFile)
+	if err != nil {
+		return nil, err
+	}
+
+	keysFile := &Data{}
+	err = keysFile.fromJSON(decodedFile)
+	if err != nil {
+		return nil, err
+	}
+
+	return keysFile, nil
+}
+
+func createFileDirectoryIfDoesntExist(path string) error {
+	dir := filepath.Dir(path)
+	exists, err := pathExists(dir)
+	if err != nil {
+		return err
+	}
+
+	if exists {
+		return nil
+	}
+
+	return os.MkdirAll(dir, 0600)
+}
+
+func pathExists(path string) (bool, error) {
+	_, err := os.Stat(path)
+
+	if err == nil {
+		return true, nil
+	}
+
+	if os.IsNotExist(err) {
+		return false, nil
+
+	}
+
+	return false, err
+}
+
+// WriteKeysFile writes a keys file with the given data
+func WriteKeysFile(path string, encryptedPrivateKeys []*EncryptedPrivateKey, publicKeys [][]byte, minimumSignatures uint32) error {
+	if path == "" {
+		path = defaultKeysFile
+	}
+
+	exists, err := pathExists(path)
+	if err != nil {
+		return err
+	}
+
+	if exists {
+		reader := bufio.NewReader(os.Stdin)
+		fmt.Printf("The file %s already exists. Are you sure you want to override it (type 'y' to approve)? ", path)
+		line, _, err := reader.ReadLine()
+		if err != nil {
+			return err
+		}
+
+		if string(line) != "y" {
+			return errors.Errorf("aborted keys file creation")
+		}
+	}
+
+	err = createFileDirectoryIfDoesntExist(path)
+	if err != nil {
+		return err
+	}
+
+	file, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE, 0600)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	keysFile := &Data{
+		encryptedPrivateKeys: encryptedPrivateKeys,
+		PublicKeys:           publicKeys,
+		MinimumSignatures:    minimumSignatures,
+	}
+
+	encoder := json.NewEncoder(file)
+	err = encoder.Encode(keysFile.toJSON())
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Wrote the keys into %s\n", path)
+	return nil
+}
+
+func getAEAD(password, salt []byte) (cipher.AEAD, error) {
+	key := argon2.IDKey(password, salt, 1, 64*1024, uint8(runtime.NumCPU()), 32)
+	return chacha20poly1305.NewX(key)
+}
+
+func decryptPrivateKey(encryptedPrivateKey *EncryptedPrivateKey, password []byte) ([]byte, error) {
+	aead, err := getAEAD(password, encryptedPrivateKey.salt)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(encryptedPrivateKey.cipher) < aead.NonceSize() {
+		return nil, errors.New("ciphertext too short")
+	}
+
+	// Split nonce and ciphertext.
+	nonce, ciphertext := encryptedPrivateKey.cipher[:aead.NonceSize()], encryptedPrivateKey.cipher[aead.NonceSize():]
+
+	// Decrypt the message and check it wasn't tampered with.
+	return aead.Open(nil, nonce, ciphertext, nil)
+}

cmd/kaspawallet/libkaspawallet/keypair.go

@@ -0,0 +1,54 @@
+package libkaspawallet
+
+import (
+	"github.com/kaspanet/go-secp256k1"
+	"github.com/kaspanet/kaspad/domain/dagconfig"
+	"github.com/kaspanet/kaspad/util"
+	"github.com/pkg/errors"
+)
+
+// CreateKeyPair generates a private-public key pair
+func CreateKeyPair() ([]byte, []byte, error) {
+	privateKey, err := secp256k1.GenerateSchnorrKeyPair()
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "Failed to generate private key")
+	}
+	publicKey, err := privateKey.SchnorrPublicKey()
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "Failed to generate public key")
+	}
+	publicKeySerialized, err := publicKey.Serialize()
+	if err != nil {
+		return nil, nil, errors.Wrap(err, "Failed to serialize public key")
+	}
+
+	return privateKey.SerializePrivateKey()[:], publicKeySerialized[:], nil
+}
+
+func addressFromPublicKey(params *dagconfig.Params, publicKeySerialized []byte) (util.Address, error) {
+	addr, err := util.NewAddressPubKeyHashFromPublicKey(publicKeySerialized[:], params.Prefix)
+	if err != nil {
+		return nil, errors.Wrap(err, "Failed to generate p2pkh address")
+	}
+
+	return addr, nil
+}
+
+// Address returns the address associated with the given public keys and minimum signatures parameters.
+func Address(params *dagconfig.Params, pubKeys [][]byte, minimumSignatures uint32) (util.Address, error) {
+	sortPublicKeys(pubKeys)
+	if uint32(len(pubKeys)) < minimumSignatures {
+		return nil, errors.Errorf("The minimum amount of signatures (%d) is greater than the amount of "+
+			"provided public keys (%d)", minimumSignatures, len(pubKeys))
+	}
+	if len(pubKeys) == 1 {
+		return addressFromPublicKey(params, pubKeys[0])
+	}
+
+	redeemScript, err := multiSigRedeemScript(pubKeys, minimumSignatures)
+	if err != nil {
+		return nil, err
+	}
+
+	return util.NewAddressScriptHash(redeemScript, params.Prefix)
+}

cmd/kaspawallet/libkaspawallet/serialization/protoserialization/generate.go

@@ -0,0 +1,3 @@
+//go:generate protoc --go_out=. --go-grpc_out=. --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative wallet.proto
+
+package protoserialization

cmd/kaspawallet/libkaspawallet/serialization/protoserialization/wallet.pb.go

@@ -0,0 +1,915 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.12.3
+// source: wallet.proto
+
+package protoserialization
+
+import (
+	proto "github.com/golang/protobuf/proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type PartiallySignedTransaction struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Tx                    *TransactionMessage     `protobuf:"bytes,1,opt,name=tx,proto3" json:"tx,omitempty"`
+	PartiallySignedInputs []*PartiallySignedInput `protobuf:"bytes,2,rep,name=partiallySignedInputs,proto3" json:"partiallySignedInputs,omitempty"`
+}
+
+func (x *PartiallySignedTransaction) Reset() {
+	*x = PartiallySignedTransaction{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PartiallySignedTransaction) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PartiallySignedTransaction) ProtoMessage() {}
+
+func (x *PartiallySignedTransaction) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PartiallySignedTransaction.ProtoReflect.Descriptor instead.
+func (*PartiallySignedTransaction) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *PartiallySignedTransaction) GetTx() *TransactionMessage {
+	if x != nil {
+		return x.Tx
+	}
+	return nil
+}
+
+func (x *PartiallySignedTransaction) GetPartiallySignedInputs() []*PartiallySignedInput {
+	if x != nil {
+		return x.PartiallySignedInputs
+	}
+	return nil
+}
+
+type PartiallySignedInput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	RedeemScript         []byte                 `protobuf:"bytes,1,opt,name=redeemScript,proto3" json:"redeemScript,omitempty"`
+	PrevOutput           *TransactionOutput     `protobuf:"bytes,2,opt,name=prevOutput,proto3" json:"prevOutput,omitempty"`
+	MinimumSignatures    uint32                 `protobuf:"varint,3,opt,name=minimumSignatures,proto3" json:"minimumSignatures,omitempty"`
+	PubKeySignaturePairs []*PubKeySignaturePair `protobuf:"bytes,4,rep,name=pubKeySignaturePairs,proto3" json:"pubKeySignaturePairs,omitempty"`
+}
+
+func (x *PartiallySignedInput) Reset() {
+	*x = PartiallySignedInput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PartiallySignedInput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PartiallySignedInput) ProtoMessage() {}
+
+func (x *PartiallySignedInput) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PartiallySignedInput.ProtoReflect.Descriptor instead.
+func (*PartiallySignedInput) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *PartiallySignedInput) GetRedeemScript() []byte {
+	if x != nil {
+		return x.RedeemScript
+	}
+	return nil
+}
+
+func (x *PartiallySignedInput) GetPrevOutput() *TransactionOutput {
+	if x != nil {
+		return x.PrevOutput
+	}
+	return nil
+}
+
+func (x *PartiallySignedInput) GetMinimumSignatures() uint32 {
+	if x != nil {
+		return x.MinimumSignatures
+	}
+	return 0
+}
+
+func (x *PartiallySignedInput) GetPubKeySignaturePairs() []*PubKeySignaturePair {
+	if x != nil {
+		return x.PubKeySignaturePairs
+	}
+	return nil
+}
+
+type PubKeySignaturePair struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PubKey    []byte `protobuf:"bytes,1,opt,name=pubKey,proto3" json:"pubKey,omitempty"`
+	Signature []byte `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+}
+
+func (x *PubKeySignaturePair) Reset() {
+	*x = PubKeySignaturePair{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *PubKeySignaturePair) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PubKeySignaturePair) ProtoMessage() {}
+
+func (x *PubKeySignaturePair) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use PubKeySignaturePair.ProtoReflect.Descriptor instead.
+func (*PubKeySignaturePair) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *PubKeySignaturePair) GetPubKey() []byte {
+	if x != nil {
+		return x.PubKey
+	}
+	return nil
+}
+
+func (x *PubKeySignaturePair) GetSignature() []byte {
+	if x != nil {
+		return x.Signature
+	}
+	return nil
+}
+
+type SubnetworkId struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Bytes []byte `protobuf:"bytes,1,opt,name=bytes,proto3" json:"bytes,omitempty"`
+}
+
+func (x *SubnetworkId) Reset() {
+	*x = SubnetworkId{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SubnetworkId) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SubnetworkId) ProtoMessage() {}
+
+func (x *SubnetworkId) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SubnetworkId.ProtoReflect.Descriptor instead.
+func (*SubnetworkId) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *SubnetworkId) GetBytes() []byte {
+	if x != nil {
+		return x.Bytes
+	}
+	return nil
+}
+
+type TransactionMessage struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Version      uint32               `protobuf:"varint,1,opt,name=version,proto3" json:"version,omitempty"`
+	Inputs       []*TransactionInput  `protobuf:"bytes,2,rep,name=inputs,proto3" json:"inputs,omitempty"`
+	Outputs      []*TransactionOutput `protobuf:"bytes,3,rep,name=outputs,proto3" json:"outputs,omitempty"`
+	LockTime     uint64               `protobuf:"varint,4,opt,name=lockTime,proto3" json:"lockTime,omitempty"`
+	SubnetworkId *SubnetworkId        `protobuf:"bytes,5,opt,name=subnetworkId,proto3" json:"subnetworkId,omitempty"`
+	Gas          uint64               `protobuf:"varint,6,opt,name=gas,proto3" json:"gas,omitempty"`
+	Payload      []byte               `protobuf:"bytes,8,opt,name=payload,proto3" json:"payload,omitempty"`
+}
+
+func (x *TransactionMessage) Reset() {
+	*x = TransactionMessage{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TransactionMessage) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TransactionMessage) ProtoMessage() {}
+
+func (x *TransactionMessage) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TransactionMessage.ProtoReflect.Descriptor instead.
+func (*TransactionMessage) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *TransactionMessage) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
+func (x *TransactionMessage) GetInputs() []*TransactionInput {
+	if x != nil {
+		return x.Inputs
+	}
+	return nil
+}
+
+func (x *TransactionMessage) GetOutputs() []*TransactionOutput {
+	if x != nil {
+		return x.Outputs
+	}
+	return nil
+}
+
+func (x *TransactionMessage) GetLockTime() uint64 {
+	if x != nil {
+		return x.LockTime
+	}
+	return 0
+}
+
+func (x *TransactionMessage) GetSubnetworkId() *SubnetworkId {
+	if x != nil {
+		return x.SubnetworkId
+	}
+	return nil
+}
+
+func (x *TransactionMessage) GetGas() uint64 {
+	if x != nil {
+		return x.Gas
+	}
+	return 0
+}
+
+func (x *TransactionMessage) GetPayload() []byte {
+	if x != nil {
+		return x.Payload
+	}
+	return nil
+}
+
+type TransactionInput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PreviousOutpoint *Outpoint `protobuf:"bytes,1,opt,name=previousOutpoint,proto3" json:"previousOutpoint,omitempty"`
+	SignatureScript  []byte    `protobuf:"bytes,2,opt,name=signatureScript,proto3" json:"signatureScript,omitempty"`
+	Sequence         uint64    `protobuf:"varint,3,opt,name=sequence,proto3" json:"sequence,omitempty"`
+}
+
+func (x *TransactionInput) Reset() {
+	*x = TransactionInput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TransactionInput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TransactionInput) ProtoMessage() {}
+
+func (x *TransactionInput) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TransactionInput.ProtoReflect.Descriptor instead.
+func (*TransactionInput) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *TransactionInput) GetPreviousOutpoint() *Outpoint {
+	if x != nil {
+		return x.PreviousOutpoint
+	}
+	return nil
+}
+
+func (x *TransactionInput) GetSignatureScript() []byte {
+	if x != nil {
+		return x.SignatureScript
+	}
+	return nil
+}
+
+func (x *TransactionInput) GetSequence() uint64 {
+	if x != nil {
+		return x.Sequence
+	}
+	return 0
+}
+
+type Outpoint struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	TransactionId *TransactionId `protobuf:"bytes,1,opt,name=transactionId,proto3" json:"transactionId,omitempty"`
+	Index         uint32         `protobuf:"varint,2,opt,name=index,proto3" json:"index,omitempty"`
+}
+
+func (x *Outpoint) Reset() {
+	*x = Outpoint{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Outpoint) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Outpoint) ProtoMessage() {}
+
+func (x *Outpoint) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Outpoint.ProtoReflect.Descriptor instead.
+func (*Outpoint) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *Outpoint) GetTransactionId() *TransactionId {
+	if x != nil {
+		return x.TransactionId
+	}
+	return nil
+}
+
+func (x *Outpoint) GetIndex() uint32 {
+	if x != nil {
+		return x.Index
+	}
+	return 0
+}
+
+type TransactionId struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Bytes []byte `protobuf:"bytes,1,opt,name=bytes,proto3" json:"bytes,omitempty"`
+}
+
+func (x *TransactionId) Reset() {
+	*x = TransactionId{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TransactionId) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TransactionId) ProtoMessage() {}
+
+func (x *TransactionId) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[7]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TransactionId.ProtoReflect.Descriptor instead.
+func (*TransactionId) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *TransactionId) GetBytes() []byte {
+	if x != nil {
+		return x.Bytes
+	}
+	return nil
+}
+
+type ScriptPublicKey struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Script  []byte `protobuf:"bytes,1,opt,name=script,proto3" json:"script,omitempty"`
+	Version uint32 `protobuf:"varint,2,opt,name=version,proto3" json:"version,omitempty"`
+}
+
+func (x *ScriptPublicKey) Reset() {
+	*x = ScriptPublicKey{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[8]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ScriptPublicKey) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ScriptPublicKey) ProtoMessage() {}
+
+func (x *ScriptPublicKey) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[8]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ScriptPublicKey.ProtoReflect.Descriptor instead.
+func (*ScriptPublicKey) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *ScriptPublicKey) GetScript() []byte {
+	if x != nil {
+		return x.Script
+	}
+	return nil
+}
+
+func (x *ScriptPublicKey) GetVersion() uint32 {
+	if x != nil {
+		return x.Version
+	}
+	return 0
+}
+
+type TransactionOutput struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value           uint64           `protobuf:"varint,1,opt,name=value,proto3" json:"value,omitempty"`
+	ScriptPublicKey *ScriptPublicKey `protobuf:"bytes,2,opt,name=scriptPublicKey,proto3" json:"scriptPublicKey,omitempty"`
+}
+
+func (x *TransactionOutput) Reset() {
+	*x = TransactionOutput{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_wallet_proto_msgTypes[9]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TransactionOutput) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TransactionOutput) ProtoMessage() {}
+
+func (x *TransactionOutput) ProtoReflect() protoreflect.Message {
+	mi := &file_wallet_proto_msgTypes[9]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TransactionOutput.ProtoReflect.Descriptor instead.
+func (*TransactionOutput) Descriptor() ([]byte, []int) {
+	return file_wallet_proto_rawDescGZIP(), []int{9}
+}
+
+func (x *TransactionOutput) GetValue() uint64 {
+	if x != nil {
+		return x.Value
+	}
+	return 0
+}
+
+func (x *TransactionOutput) GetScriptPublicKey() *ScriptPublicKey {
+	if x != nil {
+		return x.ScriptPublicKey
+	}
+	return nil
+}
+
+var File_wallet_proto protoreflect.FileDescriptor
+
+var file_wallet_proto_rawDesc = []byte{
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+}
+
+var (
+	file_wallet_proto_rawDescOnce sync.Once
+	file_wallet_proto_rawDescData = file_wallet_proto_rawDesc
+)
+
+func file_wallet_proto_rawDescGZIP() []byte {
+	file_wallet_proto_rawDescOnce.Do(func() {
+		file_wallet_proto_rawDescData = protoimpl.X.CompressGZIP(file_wallet_proto_rawDescData)
+	})
+	return file_wallet_proto_rawDescData
+}
+
+var file_wallet_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_wallet_proto_goTypes = []interface{}{
+	(*PartiallySignedTransaction)(nil), // 0: protoserialization.PartiallySignedTransaction
+	(*PartiallySignedInput)(nil),       // 1: protoserialization.PartiallySignedInput
+	(*PubKeySignaturePair)(nil),        // 2: protoserialization.PubKeySignaturePair
+	(*SubnetworkId)(nil),               // 3: protoserialization.SubnetworkId
+	(*TransactionMessage)(nil),         // 4: protoserialization.TransactionMessage
+	(*TransactionInput)(nil),           // 5: protoserialization.TransactionInput
+	(*Outpoint)(nil),                   // 6: protoserialization.Outpoint
+	(*TransactionId)(nil),              // 7: protoserialization.TransactionId
+	(*ScriptPublicKey)(nil),            // 8: protoserialization.ScriptPublicKey
+	(*TransactionOutput)(nil),          // 9: protoserialization.TransactionOutput
+}
+var file_wallet_proto_depIdxs = []int32{
+	4,  // 0: protoserialization.PartiallySignedTransaction.tx:type_name -> protoserialization.TransactionMessage
+	1,  // 1: protoserialization.PartiallySignedTransaction.partiallySignedInputs:type_name -> protoserialization.PartiallySignedInput
+	9,  // 2: protoserialization.PartiallySignedInput.prevOutput:type_name -> protoserialization.TransactionOutput
+	2,  // 3: protoserialization.PartiallySignedInput.pubKeySignaturePairs:type_name -> protoserialization.PubKeySignaturePair
+	5,  // 4: protoserialization.TransactionMessage.inputs:type_name -> protoserialization.TransactionInput
+	9,  // 5: protoserialization.TransactionMessage.outputs:type_name -> protoserialization.TransactionOutput
+	3,  // 6: protoserialization.TransactionMessage.subnetworkId:type_name -> protoserialization.SubnetworkId
+	6,  // 7: protoserialization.TransactionInput.previousOutpoint:type_name -> protoserialization.Outpoint
+	7,  // 8: protoserialization.Outpoint.transactionId:type_name -> protoserialization.TransactionId
+	8,  // 9: protoserialization.TransactionOutput.scriptPublicKey:type_name -> protoserialization.ScriptPublicKey
+	10, // [10:10] is the sub-list for method output_type
+	10, // [10:10] is the sub-list for method input_type
+	10, // [10:10] is the sub-list for extension type_name
+	10, // [10:10] is the sub-list for extension extendee
+	0,  // [0:10] is the sub-list for field type_name
+}
+
+func init() { file_wallet_proto_init() }
+func file_wallet_proto_init() {
+	if File_wallet_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_wallet_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PartiallySignedTransaction); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PartiallySignedInput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PubKeySignaturePair); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SubnetworkId); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TransactionMessage); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TransactionInput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Outpoint); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TransactionId); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ScriptPublicKey); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_wallet_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TransactionOutput); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_wallet_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   10,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_wallet_proto_goTypes,
+		DependencyIndexes: file_wallet_proto_depIdxs,
+		MessageInfos:      file_wallet_proto_msgTypes,
+	}.Build()
+	File_wallet_proto = out.File
+	file_wallet_proto_rawDesc = nil
+	file_wallet_proto_goTypes = nil
+	file_wallet_proto_depIdxs = nil
+}

cmd/kaspawallet/libkaspawallet/serialization/protoserialization/wallet.proto

@@ -0,0 +1,59 @@
+syntax = "proto3";
+package protoserialization;
+
+option go_package = "github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet/serialization/protoserialization";
+
+message PartiallySignedTransaction{
+  TransactionMessage tx = 1;
+  repeated PartiallySignedInput partiallySignedInputs = 2;
+}
+
+message PartiallySignedInput{
+  bytes redeemScript = 1;
+  TransactionOutput prevOutput = 2;
+  uint32 minimumSignatures = 3;
+  repeated PubKeySignaturePair pubKeySignaturePairs = 4;
+}
+
+message PubKeySignaturePair{
+  bytes pubKey = 1;
+  bytes signature = 2;
+}
+
+message SubnetworkId{
+  bytes bytes = 1;
+}
+
+message TransactionMessage{
+  uint32 version = 1;
+  repeated TransactionInput inputs = 2;
+  repeated TransactionOutput outputs = 3;
+  uint64 lockTime = 4;
+  SubnetworkId subnetworkId = 5;
+  uint64 gas = 6;
+  bytes payload = 8;
+}
+
+message TransactionInput{
+  Outpoint previousOutpoint = 1;
+  bytes signatureScript = 2;
+  uint64 sequence = 3;
+}
+
+message Outpoint{
+  TransactionId transactionId = 1;
+  uint32 index = 2;
+}
+
+message TransactionId{
+  bytes bytes = 1;
+}
+message ScriptPublicKey {
+  bytes script = 1;
+  uint32 version = 2;
+}
+
+message TransactionOutput{
+  uint64 value = 1;
+  ScriptPublicKey scriptPublicKey = 2;
+}

cmd/kaspawallet/libkaspawallet/serialization/serialization.go

@@ -0,0 +1,273 @@
+package serialization
+
+import (
+	"github.com/golang/protobuf/proto"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet/serialization/protoserialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
+	"github.com/pkg/errors"
+	"math"
+)
+
+// PartiallySignedTransaction is a type that is intended
+// to be transferred between multiple parties so each
+// party will be able to sign the transaction before
+// it's fully signed.
+type PartiallySignedTransaction struct {
+	Tx                    *externalapi.DomainTransaction
+	PartiallySignedInputs []*PartiallySignedInput
+}
+
+// PartiallySignedInput represents an input signed
+// only by some of the relevant parties.
+type PartiallySignedInput struct {
+	RedeeemScript        []byte
+	PrevOutput           *externalapi.DomainTransactionOutput
+	MinimumSignatures    uint32
+	PubKeySignaturePairs []*PubKeySignaturePair
+}
+
+// PubKeySignaturePair is a pair of public key and (potentially) its associated signature
+type PubKeySignaturePair struct {
+	PubKey    []byte
+	Signature []byte
+}
+
+// DeserializePartiallySignedTransaction deserializes a byte slice into PartiallySignedTransaction.
+func DeserializePartiallySignedTransaction(serializedPartiallySignedTransaction []byte) (*PartiallySignedTransaction, error) {
+	protoPartiallySignedTransaction := &protoserialization.PartiallySignedTransaction{}
+	err := proto.Unmarshal(serializedPartiallySignedTransaction, protoPartiallySignedTransaction)
+	if err != nil {
+		return nil, err
+	}
+
+	return partiallySignedTransactionFromProto(protoPartiallySignedTransaction)
+}
+
+// SerializePartiallySignedTransaction serializes a PartiallySignedTransaction.
+func SerializePartiallySignedTransaction(partiallySignedTransaction *PartiallySignedTransaction) ([]byte, error) {
+	return proto.Marshal(partiallySignedTransactionToProto(partiallySignedTransaction))
+}
+
+func partiallySignedTransactionFromProto(protoPartiallySignedTransaction *protoserialization.PartiallySignedTransaction) (*PartiallySignedTransaction, error) {
+	tx, err := transactionFromProto(protoPartiallySignedTransaction.Tx)
+	if err != nil {
+		return nil, err
+	}
+
+	inputs := make([]*PartiallySignedInput, len(protoPartiallySignedTransaction.PartiallySignedInputs))
+	for i, protoInput := range protoPartiallySignedTransaction.PartiallySignedInputs {
+		inputs[i], err = partiallySignedInputFromProto(protoInput)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &PartiallySignedTransaction{
+		Tx:                    tx,
+		PartiallySignedInputs: inputs,
+	}, nil
+}
+
+func partiallySignedTransactionToProto(partiallySignedTransaction *PartiallySignedTransaction) *protoserialization.PartiallySignedTransaction {
+	protoInputs := make([]*protoserialization.PartiallySignedInput, len(partiallySignedTransaction.PartiallySignedInputs))
+	for i, input := range partiallySignedTransaction.PartiallySignedInputs {
+		protoInputs[i] = partiallySignedInputToProto(input)
+	}
+
+	return &protoserialization.PartiallySignedTransaction{
+		Tx:                    transactionToProto(partiallySignedTransaction.Tx),
+		PartiallySignedInputs: protoInputs,
+	}
+}
+
+func partiallySignedInputFromProto(protoPartiallySignedInput *protoserialization.PartiallySignedInput) (*PartiallySignedInput, error) {
+	output, err := transactionOutputFromProto(protoPartiallySignedInput.PrevOutput)
+	if err != nil {
+		return nil, err
+	}
+
+	pubKeySignaturePairs := make([]*PubKeySignaturePair, len(protoPartiallySignedInput.PubKeySignaturePairs))
+	for i, protoPair := range protoPartiallySignedInput.PubKeySignaturePairs {
+		pubKeySignaturePairs[i] = pubKeySignaturePairFromProto(protoPair)
+	}
+
+	return &PartiallySignedInput{
+		RedeeemScript:        protoPartiallySignedInput.RedeemScript,
+		PrevOutput:           output,
+		MinimumSignatures:    protoPartiallySignedInput.MinimumSignatures,
+		PubKeySignaturePairs: pubKeySignaturePairs,
+	}, nil
+}
+
+func partiallySignedInputToProto(partiallySignedInput *PartiallySignedInput) *protoserialization.PartiallySignedInput {
+	protoPairs := make([]*protoserialization.PubKeySignaturePair, len(partiallySignedInput.PubKeySignaturePairs))
+	for i, pair := range partiallySignedInput.PubKeySignaturePairs {
+		protoPairs[i] = pubKeySignaturePairToProto(pair)
+	}
+
+	return &protoserialization.PartiallySignedInput{
+		RedeemScript:         partiallySignedInput.RedeeemScript,
+		PrevOutput:           transactionOutputToProto(partiallySignedInput.PrevOutput),
+		MinimumSignatures:    partiallySignedInput.MinimumSignatures,
+		PubKeySignaturePairs: protoPairs,
+	}
+}
+
+func pubKeySignaturePairFromProto(protoPubKeySignaturePair *protoserialization.PubKeySignaturePair) *PubKeySignaturePair {
+	return &PubKeySignaturePair{
+		PubKey:    protoPubKeySignaturePair.PubKey,
+		Signature: protoPubKeySignaturePair.Signature,
+	}
+}
+
+func pubKeySignaturePairToProto(pubKeySignaturePair *PubKeySignaturePair) *protoserialization.PubKeySignaturePair {
+	return &protoserialization.PubKeySignaturePair{
+		PubKey:    pubKeySignaturePair.PubKey,
+		Signature: pubKeySignaturePair.Signature,
+	}
+}
+
+func transactionFromProto(protoTransaction *protoserialization.TransactionMessage) (*externalapi.DomainTransaction, error) {
+	if protoTransaction.Version > math.MaxUint16 {
+		return nil, errors.Errorf("protoTransaction.Version is %d and is too big to be a uint16", protoTransaction.Version)
+	}
+
+	inputs := make([]*externalapi.DomainTransactionInput, len(protoTransaction.Inputs))
+	for i, protoInput := range protoTransaction.Inputs {
+		var err error
+		inputs[i], err = transactionInputFromProto(protoInput)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	outputs := make([]*externalapi.DomainTransactionOutput, len(protoTransaction.Outputs))
+	for i, protoOutput := range protoTransaction.Outputs {
+		var err error
+		outputs[i], err = transactionOutputFromProto(protoOutput)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	subnetworkID, err := subnetworks.FromBytes(protoTransaction.SubnetworkId.Bytes)
+	if err != nil {
+		return nil, err
+	}
+
+	return &externalapi.DomainTransaction{
+		Version:      uint16(protoTransaction.Version),
+		Inputs:       inputs,
+		Outputs:      outputs,
+		LockTime:     protoTransaction.LockTime,
+		SubnetworkID: *subnetworkID,
+		Gas:          protoTransaction.Gas,
+		Payload:      protoTransaction.Payload,
+	}, nil
+}
+
+func transactionToProto(tx *externalapi.DomainTransaction) *protoserialization.TransactionMessage {
+	protoInputs := make([]*protoserialization.TransactionInput, len(tx.Inputs))
+	for i, input := range tx.Inputs {
+		protoInputs[i] = transactionInputToProto(input)
+	}
+
+	protoOutputs := make([]*protoserialization.TransactionOutput, len(tx.Outputs))
+	for i, output := range tx.Outputs {
+		protoOutputs[i] = transactionOutputToProto(output)
+	}
+
+	return &protoserialization.TransactionMessage{
+		Version:      uint32(tx.Version),
+		Inputs:       protoInputs,
+		Outputs:      protoOutputs,
+		LockTime:     tx.LockTime,
+		SubnetworkId: &protoserialization.SubnetworkId{Bytes: tx.SubnetworkID[:]},
+		Gas:          tx.Gas,
+		Payload:      tx.Payload,
+	}
+}
+
+func transactionInputFromProto(protoInput *protoserialization.TransactionInput) (*externalapi.DomainTransactionInput, error) {
+	outpoint, err := outpointFromProto(protoInput.PreviousOutpoint)
+	if err != nil {
+		return nil, err
+	}
+
+	return &externalapi.DomainTransactionInput{
+		PreviousOutpoint: *outpoint,
+		SignatureScript:  protoInput.SignatureScript,
+		Sequence:         protoInput.Sequence,
+	}, nil
+}
+
+func transactionInputToProto(input *externalapi.DomainTransactionInput) *protoserialization.TransactionInput {
+	return &protoserialization.TransactionInput{
+		PreviousOutpoint: outpointToProto(&input.PreviousOutpoint),
+		SignatureScript:  input.SignatureScript,
+		Sequence:         input.Sequence,
+	}
+}
+
+func outpointFromProto(protoOutpoint *protoserialization.Outpoint) (*externalapi.DomainOutpoint, error) {
+	txID, err := transactionIDFromProto(protoOutpoint.TransactionId)
+	if err != nil {
+		return nil, err
+	}
+	return &externalapi.DomainOutpoint{
+		TransactionID: *txID,
+		Index:         protoOutpoint.Index,
+	}, nil
+}
+
+func outpointToProto(outpoint *externalapi.DomainOutpoint) *protoserialization.Outpoint {
+	return &protoserialization.Outpoint{
+		TransactionId: &protoserialization.TransactionId{Bytes: outpoint.TransactionID.ByteSlice()},
+		Index:         outpoint.Index,
+	}
+}
+
+func transactionIDFromProto(protoTxID *protoserialization.TransactionId) (*externalapi.DomainTransactionID, error) {
+	if protoTxID == nil {
+		return nil, errors.Errorf("protoTxID is nil")
+	}
+
+	return externalapi.NewDomainTransactionIDFromByteSlice(protoTxID.Bytes)
+}
+
+func transactionOutputFromProto(protoOutput *protoserialization.TransactionOutput) (*externalapi.DomainTransactionOutput, error) {
+	scriptPublicKey, err := scriptPublicKeyFromProto(protoOutput.ScriptPublicKey)
+	if err != nil {
+		return nil, err
+	}
+
+	return &externalapi.DomainTransactionOutput{
+		Value:           protoOutput.Value,
+		ScriptPublicKey: scriptPublicKey,
+	}, nil
+}
+
+func transactionOutputToProto(output *externalapi.DomainTransactionOutput) *protoserialization.TransactionOutput {
+	return &protoserialization.TransactionOutput{
+		Value:           output.Value,
+		ScriptPublicKey: scriptPublicKeyToProto(output.ScriptPublicKey),
+	}
+}
+
+func scriptPublicKeyFromProto(protoScriptPublicKey *protoserialization.ScriptPublicKey) (*externalapi.ScriptPublicKey, error) {
+	if protoScriptPublicKey.Version > math.MaxUint16 {
+		return nil, errors.Errorf("protoOutput.ScriptPublicKey.Version is %d and is too big to be a uint16", protoScriptPublicKey.Version)
+	}
+	return &externalapi.ScriptPublicKey{
+		Script:  protoScriptPublicKey.Script,
+		Version: uint16(protoScriptPublicKey.Version),
+	}, nil
+}
+
+func scriptPublicKeyToProto(scriptPublicKey *externalapi.ScriptPublicKey) *protoserialization.ScriptPublicKey {
+	return &protoserialization.ScriptPublicKey{
+		Script:  scriptPublicKey.Script,
+		Version: uint32(scriptPublicKey.Version),
+	}
+}

cmd/kaspawallet/libkaspawallet/transaction.go

@@ -0,0 +1,275 @@
+package libkaspawallet
+
+import (
+	"bytes"
+	"github.com/kaspanet/go-secp256k1"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet/serialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/utxo"
+	"github.com/kaspanet/kaspad/util"
+	"github.com/pkg/errors"
+	"sort"
+)
+
+// Payment contains a recipient payment details
+type Payment struct {
+	Address util.Address
+	Amount  uint64
+}
+
+func sortPublicKeys(publicKeys [][]byte) {
+	sort.Slice(publicKeys, func(i, j int) bool {
+		return bytes.Compare(publicKeys[i], publicKeys[j]) < 0
+	})
+}
+
+// CreateUnsignedTransaction creates an unsigned transaction
+func CreateUnsignedTransaction(
+	pubKeys [][]byte,
+	minimumSignatures uint32,
+	payments []*Payment,
+	selectedUTXOs []*externalapi.OutpointAndUTXOEntryPair) ([]byte, error) {
+
+	sortPublicKeys(pubKeys)
+	unsignedTransaction, err := createUnsignedTransaction(pubKeys, minimumSignatures, payments, selectedUTXOs)
+	if err != nil {
+		return nil, err
+	}
+
+	return serialization.SerializePartiallySignedTransaction(unsignedTransaction)
+}
+
+// Sign signs the transaction with the given private keys
+func Sign(privateKeys [][]byte, serializedPSTx []byte) ([]byte, error) {
+	keyPairs := make([]*secp256k1.SchnorrKeyPair, len(privateKeys))
+	for i, privateKey := range privateKeys {
+		var err error
+		keyPairs[i], err = secp256k1.DeserializeSchnorrPrivateKeyFromSlice(privateKey)
+		if err != nil {
+			return nil, errors.Wrap(err, "Error deserializing private key")
+		}
+	}
+
+	partiallySignedTransaction, err := serialization.DeserializePartiallySignedTransaction(serializedPSTx)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, keyPair := range keyPairs {
+		err = sign(keyPair, partiallySignedTransaction)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return serialization.SerializePartiallySignedTransaction(partiallySignedTransaction)
+}
+
+func multiSigRedeemScript(pubKeys [][]byte, minimumSignatures uint32) ([]byte, error) {
+	scriptBuilder := txscript.NewScriptBuilder()
+	scriptBuilder.AddInt64(int64(minimumSignatures))
+	for _, key := range pubKeys {
+		scriptBuilder.AddData(key)
+	}
+	scriptBuilder.AddInt64(int64(len(pubKeys)))
+	scriptBuilder.AddOp(txscript.OpCheckMultiSig)
+	return scriptBuilder.Script()
+}
+
+func createUnsignedTransaction(
+	pubKeys [][]byte,
+	minimumSignatures uint32,
+	payments []*Payment,
+	selectedUTXOs []*externalapi.OutpointAndUTXOEntryPair) (*serialization.PartiallySignedTransaction, error) {
+
+	var redeemScript []byte
+	if len(pubKeys) > 1 {
+		var err error
+		redeemScript, err = multiSigRedeemScript(pubKeys, minimumSignatures)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	inputs := make([]*externalapi.DomainTransactionInput, len(selectedUTXOs))
+	partiallySignedInputs := make([]*serialization.PartiallySignedInput, len(selectedUTXOs))
+	for i, utxo := range selectedUTXOs {
+		emptyPubKeySignaturePairs := make([]*serialization.PubKeySignaturePair, len(pubKeys))
+		for i, pubKey := range pubKeys {
+			emptyPubKeySignaturePairs[i] = &serialization.PubKeySignaturePair{
+				PubKey: pubKey,
+			}
+		}
+
+		inputs[i] = &externalapi.DomainTransactionInput{PreviousOutpoint: *utxo.Outpoint}
+		partiallySignedInputs[i] = &serialization.PartiallySignedInput{
+			RedeeemScript: redeemScript,
+			PrevOutput: &externalapi.DomainTransactionOutput{
+				Value:           utxo.UTXOEntry.Amount(),
+				ScriptPublicKey: utxo.UTXOEntry.ScriptPublicKey(),
+			},
+			MinimumSignatures:    minimumSignatures,
+			PubKeySignaturePairs: emptyPubKeySignaturePairs,
+		}
+	}
+
+	outputs := make([]*externalapi.DomainTransactionOutput, len(payments))
+	for i, payment := range payments {
+		scriptPublicKey, err := txscript.PayToAddrScript(payment.Address)
+		if err != nil {
+			return nil, err
+		}
+
+		outputs[i] = &externalapi.DomainTransactionOutput{
+			Value:           payment.Amount,
+			ScriptPublicKey: scriptPublicKey,
+		}
+	}
+
+	domainTransaction := &externalapi.DomainTransaction{
+		Version:      constants.MaxTransactionVersion,
+		Inputs:       inputs,
+		Outputs:      outputs,
+		LockTime:     0,
+		SubnetworkID: subnetworks.SubnetworkIDNative,
+		Gas:          0,
+		Payload:      nil,
+	}
+
+	return &serialization.PartiallySignedTransaction{
+		Tx:                    domainTransaction,
+		PartiallySignedInputs: partiallySignedInputs,
+	}, nil
+}
+
+func sign(keyPair *secp256k1.SchnorrKeyPair, psTx *serialization.PartiallySignedTransaction) error {
+	if isTransactionFullySigned(psTx) {
+		return nil
+	}
+
+	publicKey, err := keyPair.SchnorrPublicKey()
+	if err != nil {
+		return err
+	}
+
+	serializedPublicKey, err := publicKey.Serialize()
+	if err != nil {
+		return err
+	}
+
+	sighashReusedValues := &consensushashing.SighashReusedValues{}
+	for i, partiallySignedInput := range psTx.PartiallySignedInputs {
+		prevOut := partiallySignedInput.PrevOutput
+		psTx.Tx.Inputs[i].UTXOEntry = utxo.NewUTXOEntry(
+			prevOut.Value,
+			prevOut.ScriptPublicKey,
+			false, // This is a fake value, because it's irrelevant for the signature
+			0,     // This is a fake value, because it's irrelevant for the signature
+		)
+	}
+
+	signed := false
+	for i, partiallySignedInput := range psTx.PartiallySignedInputs {
+		for _, pair := range partiallySignedInput.PubKeySignaturePairs {
+			if bytes.Equal(pair.PubKey, serializedPublicKey[:]) {
+				pair.Signature, err = txscript.RawTxInSignature(psTx.Tx, i, consensushashing.SigHashAll, keyPair, sighashReusedValues)
+				if err != nil {
+					return err
+				}
+
+				signed = true
+			}
+		}
+	}
+
+	if !signed {
+		return errors.Errorf("Public key doesn't match any of the transaction public keys")
+	}
+
+	return nil
+}
+
+// IsTransactionFullySigned returns whether the transaction is fully signed and ready to broadcast.
+func IsTransactionFullySigned(psTxBytes []byte) (bool, error) {
+	partiallySignedTransaction, err := serialization.DeserializePartiallySignedTransaction(psTxBytes)
+	if err != nil {
+		return false, err
+	}
+
+	return isTransactionFullySigned(partiallySignedTransaction), nil
+}
+
+func isTransactionFullySigned(psTx *serialization.PartiallySignedTransaction) bool {
+	for _, input := range psTx.PartiallySignedInputs {
+		numSignatures := 0
+		for _, pair := range input.PubKeySignaturePairs {
+			if pair.Signature != nil {
+				numSignatures++
+			}
+		}
+		if uint32(numSignatures) < input.MinimumSignatures {
+			return false
+		}
+	}
+	return true
+}
+
+// ExtractTransaction extracts a domain transaction from partially signed transaction after all of the
+// relevant parties have signed it.
+func ExtractTransaction(psTxBytes []byte) (*externalapi.DomainTransaction, error) {
+	partiallySignedTransaction, err := serialization.DeserializePartiallySignedTransaction(psTxBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	return extractTransaction(partiallySignedTransaction)
+}
+
+func extractTransaction(psTx *serialization.PartiallySignedTransaction) (*externalapi.DomainTransaction, error) {
+	for i, input := range psTx.PartiallySignedInputs {
+		isMultisig := input.RedeeemScript != nil
+		scriptBuilder := txscript.NewScriptBuilder()
+		if isMultisig {
+			signatureCount := 0
+			for _, pair := range input.PubKeySignaturePairs {
+				if pair.Signature != nil {
+					scriptBuilder.AddData(pair.Signature)
+					signatureCount++
+				}
+			}
+			if uint32(signatureCount) < input.MinimumSignatures {
+				return nil, errors.Errorf("missing %d signatures", input.MinimumSignatures-uint32(signatureCount))
+			}
+
+			scriptBuilder.AddData(input.RedeeemScript)
+			sigScript, err := scriptBuilder.Script()
+			if err != nil {
+				return nil, err
+			}
+
+			psTx.Tx.Inputs[i].SignatureScript = sigScript
+		} else {
+			if len(input.PubKeySignaturePairs) > 1 {
+				return nil, errors.Errorf("Cannot sign on P2PKH when len(input.PubKeySignaturePairs) > 1")
+			}
+
+			if input.PubKeySignaturePairs[0].Signature == nil {
+				return nil, errors.Errorf("missing signature")
+			}
+
+			sigScript, err := txscript.NewScriptBuilder().
+				AddData(input.PubKeySignaturePairs[0].Signature).
+				AddData(input.PubKeySignaturePairs[0].PubKey).
+				Script()
+			if err != nil {
+				return nil, err
+			}
+			psTx.Tx.Inputs[i].SignatureScript = sigScript
+		}
+	}
+	return psTx.Tx, nil
+}

cmd/kaspawallet/libkaspawallet/transaction_test.go

@@ -0,0 +1,268 @@
+package libkaspawallet_test
+
+import (
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+	"github.com/kaspanet/kaspad/domain/consensus"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/testutils"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/utxo"
+	"github.com/kaspanet/kaspad/domain/dagconfig"
+	"github.com/kaspanet/kaspad/util"
+	"strings"
+	"testing"
+)
+
+func TestMultisig(t *testing.T) {
+	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {
+		params.BlockCoinbaseMaturity = 0
+		tc, teardown, err := consensus.NewFactory().NewTestConsensus(params, false, "TestMultisig")
+		if err != nil {
+			t.Fatalf("Error setting up tc: %+v", err)
+		}
+		defer teardown(false)
+
+		const numKeys = 3
+		privateKeys := make([][]byte, numKeys)
+		publicKeys := make([][]byte, numKeys)
+		for i := 0; i < numKeys; i++ {
+			privateKeys[i], publicKeys[i], err = libkaspawallet.CreateKeyPair()
+			if err != nil {
+				t.Fatalf("CreateKeyPair: %+v", err)
+			}
+		}
+
+		const minimumSignatures = 2
+		address, err := libkaspawallet.Address(params, publicKeys, minimumSignatures)
+		if err != nil {
+			t.Fatalf("Address: %+v", err)
+		}
+
+		if _, ok := address.(*util.AddressScriptHash); !ok {
+			t.Fatalf("The address is of unexpected type")
+		}
+
+		scriptPublicKey, err := txscript.PayToAddrScript(address)
+		if err != nil {
+			t.Fatalf("PayToAddrScript: %+v", err)
+		}
+
+		coinbaseData := &externalapi.DomainCoinbaseData{
+			ScriptPublicKey: scriptPublicKey,
+			ExtraData:       nil,
+		}
+
+		fundingBlockHash, _, err := tc.AddBlock([]*externalapi.DomainHash{params.GenesisHash}, coinbaseData, nil)
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		block1Hash, _, err := tc.AddBlock([]*externalapi.DomainHash{fundingBlockHash}, nil, nil)
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		block1, err := tc.GetBlock(block1Hash)
+		if err != nil {
+			t.Fatalf("GetBlock: %+v", err)
+		}
+
+		block1Tx := block1.Transactions[0]
+		block1TxOut := block1Tx.Outputs[0]
+		selectedUTXOs := []*externalapi.OutpointAndUTXOEntryPair{{
+			Outpoint: &externalapi.DomainOutpoint{
+				TransactionID: *consensushashing.TransactionID(block1.Transactions[0]),
+				Index:         0,
+			},
+			UTXOEntry: utxo.NewUTXOEntry(block1TxOut.Value, block1TxOut.ScriptPublicKey, true, 0),
+		}}
+
+		unsignedTransaction, err := libkaspawallet.CreateUnsignedTransaction(publicKeys, minimumSignatures, []*libkaspawallet.Payment{{
+			Address: address,
+			Amount:  10,
+		}}, selectedUTXOs)
+		if err != nil {
+			t.Fatalf("CreateUnsignedTransaction: %+v", err)
+		}
+
+		isFullySigned, err := libkaspawallet.IsTransactionFullySigned(unsignedTransaction)
+		if err != nil {
+			t.Fatalf("IsTransactionFullySigned: %+v", err)
+		}
+
+		if isFullySigned {
+			t.Fatalf("Transaction is not expected to be signed")
+		}
+
+		_, err = libkaspawallet.ExtractTransaction(unsignedTransaction)
+		if err == nil || !strings.Contains(err.Error(), fmt.Sprintf("missing %d signatures", minimumSignatures)) {
+			t.Fatal("Unexpectedly succeed to extract a valid transaction out of unsigned transaction")
+		}
+
+		signedTxStep1, err := libkaspawallet.Sign(privateKeys[:1], unsignedTransaction)
+		if err != nil {
+			t.Fatalf("IsTransactionFullySigned: %+v", err)
+		}
+
+		isFullySigned, err = libkaspawallet.IsTransactionFullySigned(signedTxStep1)
+		if err != nil {
+			t.Fatalf("IsTransactionFullySigned: %+v", err)
+		}
+
+		if isFullySigned {
+			t.Fatalf("Transaction is not expected to be fully signed")
+		}
+
+		signedTxStep2, err := libkaspawallet.Sign(privateKeys[1:2], signedTxStep1)
+		if err != nil {
+			t.Fatalf("Sign: %+v", err)
+		}
+
+		extractedSignedTxStep2, err := libkaspawallet.ExtractTransaction(signedTxStep2)
+		if err != nil {
+			t.Fatalf("ExtractTransaction: %+v", err)
+		}
+
+		signedTxOneStep, err := libkaspawallet.Sign(privateKeys[:2], unsignedTransaction)
+		if err != nil {
+			t.Fatalf("Sign: %+v", err)
+		}
+
+		extractedSignedTxOneStep, err := libkaspawallet.ExtractTransaction(signedTxOneStep)
+		if err != nil {
+			t.Fatalf("ExtractTransaction: %+v", err)
+		}
+
+		// We check IDs instead of comparing the actual transactions because the actual transactions have different
+		// signature scripts due to non deterministic signature scheme.
+		if !consensushashing.TransactionID(extractedSignedTxStep2).Equal(consensushashing.TransactionID(extractedSignedTxOneStep)) {
+			t.Fatalf("Expected extractedSignedTxOneStep and extractedSignedTxStep2 IDs to be equal")
+		}
+
+		_, insertionResult, err := tc.AddBlock([]*externalapi.DomainHash{block1Hash}, nil, []*externalapi.DomainTransaction{extractedSignedTxStep2})
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		addedUTXO := &externalapi.DomainOutpoint{
+			TransactionID: *consensushashing.TransactionID(extractedSignedTxStep2),
+			Index:         0,
+		}
+		if !insertionResult.VirtualUTXODiff.ToAdd().Contains(addedUTXO) {
+			t.Fatalf("Transaction wasn't accepted in the DAG")
+		}
+	})
+}
+
+func TestP2PKH(t *testing.T) {
+	testutils.ForAllNets(t, true, func(t *testing.T, params *dagconfig.Params) {
+		params.BlockCoinbaseMaturity = 0
+		tc, teardown, err := consensus.NewFactory().NewTestConsensus(params, false, "TestMultisig")
+		if err != nil {
+			t.Fatalf("Error setting up tc: %+v", err)
+		}
+		defer teardown(false)
+
+		const numKeys = 1
+		privateKeys := make([][]byte, numKeys)
+		publicKeys := make([][]byte, numKeys)
+		for i := 0; i < numKeys; i++ {
+			privateKeys[i], publicKeys[i], err = libkaspawallet.CreateKeyPair()
+			if err != nil {
+				t.Fatalf("CreateKeyPair: %+v", err)
+			}
+		}
+
+		const minimumSignatures = 1
+		address, err := libkaspawallet.Address(params, publicKeys, minimumSignatures)
+		if err != nil {
+			t.Fatalf("Address: %+v", err)
+		}
+
+		if _, ok := address.(*util.AddressPubKeyHash); !ok {
+			t.Fatalf("The address is of unexpected type")
+		}
+
+		scriptPublicKey, err := txscript.PayToAddrScript(address)
+		if err != nil {
+			t.Fatalf("PayToAddrScript: %+v", err)
+		}
+
+		coinbaseData := &externalapi.DomainCoinbaseData{
+			ScriptPublicKey: scriptPublicKey,
+			ExtraData:       nil,
+		}
+
+		fundingBlockHash, _, err := tc.AddBlock([]*externalapi.DomainHash{params.GenesisHash}, coinbaseData, nil)
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		block1Hash, _, err := tc.AddBlock([]*externalapi.DomainHash{fundingBlockHash}, nil, nil)
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		block1, err := tc.GetBlock(block1Hash)
+		if err != nil {
+			t.Fatalf("GetBlock: %+v", err)
+		}
+
+		block1Tx := block1.Transactions[0]
+		block1TxOut := block1Tx.Outputs[0]
+		selectedUTXOs := []*externalapi.OutpointAndUTXOEntryPair{{
+			Outpoint: &externalapi.DomainOutpoint{
+				TransactionID: *consensushashing.TransactionID(block1.Transactions[0]),
+				Index:         0,
+			},
+			UTXOEntry: utxo.NewUTXOEntry(block1TxOut.Value, block1TxOut.ScriptPublicKey, true, 0),
+		}}
+
+		unsignedTransaction, err := libkaspawallet.CreateUnsignedTransaction(publicKeys, minimumSignatures, []*libkaspawallet.Payment{{
+			Address: address,
+			Amount:  10,
+		}}, selectedUTXOs)
+		if err != nil {
+			t.Fatalf("CreateUnsignedTransaction: %+v", err)
+		}
+
+		isFullySigned, err := libkaspawallet.IsTransactionFullySigned(unsignedTransaction)
+		if err != nil {
+			t.Fatalf("IsTransactionFullySigned: %+v", err)
+		}
+
+		if isFullySigned {
+			t.Fatalf("Transaction is not expected to be signed")
+		}
+
+		_, err = libkaspawallet.ExtractTransaction(unsignedTransaction)
+		if err == nil || !strings.Contains(err.Error(), "missing signature") {
+			t.Fatal("Unexpectedly succeed to extract a valid transaction out of unsigned transaction")
+		}
+
+		signedTx, err := libkaspawallet.Sign(privateKeys, unsignedTransaction)
+		if err != nil {
+			t.Fatalf("IsTransactionFullySigned: %+v", err)
+		}
+
+		tx, err := libkaspawallet.ExtractTransaction(signedTx)
+		if err != nil {
+			t.Fatalf("ExtractTransaction: %+v", err)
+		}
+
+		_, insertionResult, err := tc.AddBlock([]*externalapi.DomainHash{block1Hash}, nil, []*externalapi.DomainTransaction{tx})
+		if err != nil {
+			t.Fatalf("AddBlock: %+v", err)
+		}
+
+		addedUTXO := &externalapi.DomainOutpoint{
+			TransactionID: *consensushashing.TransactionID(tx),
+			Index:         0,
+		}
+		if !insertionResult.VirtualUTXODiff.ToAdd().Contains(addedUTXO) {
+			t.Fatalf("Transaction wasn't accepted in the DAG")
+		}
+	})
+}

cmd/kaspawallet/main.go

@@ -1,8 +1,6 @@
 package main
 
-import (
-	"github.com/pkg/errors"
-)
+import "github.com/pkg/errors"
 
 func main() {
 	subCmd, config := parseCommandLine()
@@ -15,6 +13,12 @@ func main() {
 		err = balance(config.(*balanceConfig))
 	case sendSubCmd:
 		err = send(config.(*sendConfig))
+	case createUnsignedTransactionSubCmd:
+		err = createUnsignedTransaction(config.(*createUnsignedTransactionConfig))
+	case signSubCmd:
+		err = sign(config.(*signConfig))
+	case broadcastSubCmd:
+		err = broadcast(config.(*broadcastConfig))
 	default:
 		err = errors.Errorf("Unknown sub-command '%s'\n", subCmd)
 	}

cmd/kaspawallet/send.go

@@ -0,0 +1,166 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/keys"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+	utxopkg "github.com/kaspanet/kaspad/domain/consensus/utils/utxo"
+	"github.com/kaspanet/kaspad/domain/dagconfig"
+
+	"github.com/kaspanet/kaspad/app/appmessage"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/transactionid"
+	"github.com/kaspanet/kaspad/infrastructure/network/rpcclient"
+	"github.com/kaspanet/kaspad/util"
+	"github.com/pkg/errors"
+)
+
+func send(conf *sendConfig) error {
+	keysFile, err := keys.ReadKeysFile(conf.KeysFile)
+	if err != nil {
+		return err
+	}
+
+	toAddress, err := util.DecodeAddress(conf.ToAddress, conf.ActiveNetParams.Prefix)
+	if err != nil {
+		return err
+	}
+
+	fromAddress, err := libkaspawallet.Address(conf.NetParams(), keysFile.PublicKeys, keysFile.MinimumSignatures)
+	if err != nil {
+		return err
+	}
+
+	client, err := connectToRPC(conf.NetParams(), conf.RPCServer)
+	if err != nil {
+		return err
+	}
+	utxos, err := fetchSpendableUTXOs(conf.NetParams(), client, fromAddress.String())
+	if err != nil {
+		return err
+	}
+
+	sendAmountSompi := uint64(conf.SendAmount * util.SompiPerKaspa)
+
+	const feePerInput = 1000
+	selectedUTXOs, changeSompi, err := selectUTXOs(utxos, sendAmountSompi, feePerInput)
+	if err != nil {
+		return err
+	}
+
+	psTx, err := libkaspawallet.CreateUnsignedTransaction(keysFile.PublicKeys, keysFile.MinimumSignatures, []*libkaspawallet.Payment{{
+		Address: toAddress,
+		Amount:  sendAmountSompi,
+	}, {
+		Address: fromAddress,
+		Amount:  changeSompi,
+	}}, selectedUTXOs)
+	if err != nil {
+		return err
+	}
+
+	privateKeys, err := keysFile.DecryptPrivateKeys()
+	if err != nil {
+		return err
+	}
+
+	updatedPSTx, err := libkaspawallet.Sign(privateKeys, psTx)
+	if err != nil {
+		return err
+	}
+
+	tx, err := libkaspawallet.ExtractTransaction(updatedPSTx)
+	if err != nil {
+		return err
+	}
+
+	transactionID, err := sendTransaction(client, tx)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Transaction was sent successfully")
+	fmt.Printf("Transaction ID: \t%s\n", transactionID)
+
+	return nil
+}
+
+func fetchSpendableUTXOs(params *dagconfig.Params, client *rpcclient.RPCClient, address string) ([]*appmessage.UTXOsByAddressesEntry, error) {
+	getUTXOsByAddressesResponse, err := client.GetUTXOsByAddresses([]string{address})
+	if err != nil {
+		return nil, err
+	}
+	virtualSelectedParentBlueScoreResponse, err := client.GetVirtualSelectedParentBlueScore()
+	if err != nil {
+		return nil, err
+	}
+	virtualSelectedParentBlueScore := virtualSelectedParentBlueScoreResponse.BlueScore
+
+	spendableUTXOs := make([]*appmessage.UTXOsByAddressesEntry, 0)
+	for _, entry := range getUTXOsByAddressesResponse.Entries {
+		if !isUTXOSpendable(entry, virtualSelectedParentBlueScore, params.BlockCoinbaseMaturity) {
+			continue
+		}
+		spendableUTXOs = append(spendableUTXOs, entry)
+	}
+	return spendableUTXOs, nil
+}
+
+func selectUTXOs(utxos []*appmessage.UTXOsByAddressesEntry, spendAmount uint64, feePerInput uint64) (
+	selectedUTXOs []*externalapi.OutpointAndUTXOEntryPair, changeSompi uint64, err error) {
+
+	selectedUTXOs = []*externalapi.OutpointAndUTXOEntryPair{}
+	totalValue := uint64(0)
+
+	for _, utxo := range utxos {
+		txID, err := transactionid.FromString(utxo.Outpoint.TransactionID)
+		if err != nil {
+			return nil, 0, err
+		}
+
+		rpcUTXOEntry := utxo.UTXOEntry
+		scriptPublicKeyScript, err := hex.DecodeString(rpcUTXOEntry.ScriptPublicKey.Script)
+		if err != nil {
+			return nil, 0, err
+		}
+
+		scriptPublicKey := &externalapi.ScriptPublicKey{
+			Script:  scriptPublicKeyScript,
+			Version: rpcUTXOEntry.ScriptPublicKey.Version,
+		}
+
+		utxoEntry := utxopkg.NewUTXOEntry(rpcUTXOEntry.Amount, scriptPublicKey, rpcUTXOEntry.IsCoinbase, rpcUTXOEntry.BlockDAAScore)
+		selectedUTXOs = append(selectedUTXOs, &externalapi.OutpointAndUTXOEntryPair{
+			Outpoint: &externalapi.DomainOutpoint{
+				TransactionID: *txID,
+				Index:         utxo.Outpoint.Index,
+			},
+			UTXOEntry: utxoEntry,
+		})
+		totalValue += utxo.UTXOEntry.Amount
+
+		fee := feePerInput * uint64(len(selectedUTXOs))
+		totalSpend := spendAmount + fee
+		if totalValue >= totalSpend {
+			break
+		}
+	}
+
+	fee := feePerInput * uint64(len(selectedUTXOs))
+	totalSpend := spendAmount + fee
+	if totalValue < totalSpend {
+		return nil, 0, errors.Errorf("Insufficient funds for send: %f required, while only %f available",
+			float64(totalSpend)/util.SompiPerKaspa, float64(totalValue)/util.SompiPerKaspa)
+	}
+
+	return selectedUTXOs, totalValue - totalSpend, nil
+}
+
+func sendTransaction(client *rpcclient.RPCClient, tx *externalapi.DomainTransaction) (string, error) {
+	submitTransactionResponse, err := client.SubmitTransaction(appmessage.DomainTransactionToRPCTransaction(tx))
+	if err != nil {
+		return "", errors.Wrapf(err, "error submitting transaction")
+	}
+	return submitTransactionResponse.TransactionID, nil
+}

cmd/kaspawallet/sign.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/keys"
+	"github.com/kaspanet/kaspad/cmd/kaspawallet/libkaspawallet"
+)
+
+func sign(conf *signConfig) error {
+	keysFile, err := keys.ReadKeysFile(conf.KeysFile)
+	if err != nil {
+		return err
+	}
+
+	psTxBytes, err := hex.DecodeString(conf.Transaction)
+	if err != nil {
+		return err
+	}
+
+	privateKeys, err := keysFile.DecryptPrivateKeys()
+	if err != nil {
+		return err
+	}
+
+	updatedPSTxBytes, err := libkaspawallet.Sign(privateKeys, psTxBytes)
+	if err != nil {
+		return err
+	}
+
+	isFullySigned, err := libkaspawallet.IsTransactionFullySigned(updatedPSTxBytes)
+	if err != nil {
+		return err
+	}
+
+	if isFullySigned {
+		fmt.Println("The transaction is signed and ready to broadcast")
+	} else {
+		fmt.Println("Successfully signed transaction")
+	}
+
+	fmt.Printf("Transaction: %x\n", updatedPSTxBytes)
+	return nil
+}

cmd/wallet/README.md

@@ -1,48 +0,0 @@
-WALLET
-======
-
-## IMPORTANT:
-
-### This software is for TESTING ONLY. Do NOT use it for handling real money.
-
-`wallet` is a simple, no-frills wallet software operated via the command line.\
-It is capable of generating wallet key-pairs, printing a wallet's current balance, and sending simple transactions.
-
-## Requirements
-
-Go 1.16 or later.
-
-## Installation
-
-#### Build from Source
-
-- Install Go according to the installation instructions here:
-  http://golang.org/doc/install
-
-- Ensure Go was installed properly and is a supported version:
-
-```bash
-$ go version
-```
-
-- Run the following commands to obtain and install kaspad including all dependencies:
-
-```bash
-$ git clone https://github.com/kaspanet/kaspad
-$ cd kaspad/cmd/wallet
-$ go install .
-```
-
-- Wallet should now be installed in `$(go env GOPATH)/bin`. If you did
-  not already add the bin directory to your system path during Go installation,
-  you are encouraged to do so now.
-
-
-Usage
------
-
-* Create a new wallet key-pair: `wallet create --testnet`
-* Print a wallet's current balance:
-  `wallet balance --testnet --address=kaspatest:000000000000000000000000000000000000000000`
-* Send funds to another wallet:
-  `wallet send --testnet --private-key=0000000000000000000000000000000000000000000000000000000000000000 --send-amount=50 --to-address=kaspatest:000000000000000000000000000000000000000000`

cmd/wallet/common.go

@@ -1,20 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/kaspanet/kaspad/app/appmessage"
-	"os"
-)
-
-func isUTXOSpendable(entry *appmessage.UTXOsByAddressesEntry, virtualSelectedParentBlueScore uint64, coinbaseMaturity uint64) bool {
-	if !entry.UTXOEntry.IsCoinbase {
-		return true
-	}
-	blockBlueScore := entry.UTXOEntry.BlockBlueScore
-	return blockBlueScore+coinbaseMaturity < virtualSelectedParentBlueScore
-}
-
-func printErrorAndExit(err error) {
-	fmt.Fprintf(os.Stderr, "%s\n", err)
-	os.Exit(1)
-}

cmd/wallet/config.go

@@ -1,85 +0,0 @@
-package main
-
-import (
-	"github.com/kaspanet/kaspad/infrastructure/config"
-	"github.com/pkg/errors"
-	"os"
-
-	"github.com/jessevdk/go-flags"
-)
-
-const (
-	createSubCmd  = "create"
-	balanceSubCmd = "balance"
-	sendSubCmd    = "send"
-)
-
-type createConfig struct {
-	config.NetworkFlags
-}
-
-type balanceConfig struct {
-	RPCServer string `long:"rpcserver" short:"s" description:"RPC server to connect to"`
-	Address   string `long:"address" short:"d" description:"The public address to check the balance of" required:"true"`
-	config.NetworkFlags
-}
-
-type sendConfig struct {
-	RPCServer  string  `long:"rpcserver" short:"s" description:"RPC server to connect to"`
-	PrivateKey string  `long:"private-key" short:"k" description:"The private key of the sender (encoded in hex)" required:"true"`
-	ToAddress  string  `long:"to-address" short:"t" description:"The public address to send Kaspa to" required:"true"`
-	SendAmount float64 `long:"send-amount" short:"v" description:"An amount to send in Kaspa (e.g. 1234.12345678)" required:"true"`
-	config.NetworkFlags
-}
-
-func parseCommandLine() (subCommand string, config interface{}) {
-	cfg := &struct{}{}
-	parser := flags.NewParser(cfg, flags.PrintErrors|flags.HelpFlag)
-
-	createConf := &createConfig{}
-	parser.AddCommand(createSubCmd, "Creates a new wallet",
-		"Creates a private key and 3 public addresses, one for each of MainNet, TestNet and DevNet", createConf)
-
-	balanceConf := &balanceConfig{}
-	parser.AddCommand(balanceSubCmd, "Shows the balance of a public address",
-		"Shows the balance for a public address in Kaspa", balanceConf)
-
-	sendConf := &sendConfig{}
-	parser.AddCommand(sendSubCmd, "Sends a Kaspa transaction to a public address",
-		"Sends a Kaspa transaction to a public address", sendConf)
-
-	_, err := parser.Parse()
-
-	if err != nil {
-		var flagsErr *flags.Error
-		if ok := errors.As(err, &flagsErr); ok && flagsErr.Type == flags.ErrHelp {
-			os.Exit(0)
-		} else {
-			os.Exit(1)
-		}
-		return "", nil
-	}
-
-	switch parser.Command.Active.Name {
-	case createSubCmd:
-		err := createConf.ResolveNetwork(parser)
-		if err != nil {
-			printErrorAndExit(err)
-		}
-		config = createConf
-	case balanceSubCmd:
-		err := balanceConf.ResolveNetwork(parser)
-		if err != nil {
-			printErrorAndExit(err)
-		}
-		config = balanceConf
-	case sendSubCmd:
-		err := sendConf.ResolveNetwork(parser)
-		if err != nil {
-			printErrorAndExit(err)
-		}
-		config = sendConf
-	}
-
-	return parser.Command.Active.Name, config
-}

cmd/wallet/create.go

@@ -1,37 +0,0 @@
-package main
-
-import (
-	"fmt"
-
-	"github.com/kaspanet/go-secp256k1"
-	"github.com/kaspanet/kaspad/util"
-	"github.com/pkg/errors"
-)
-
-func create(conf *createConfig) error {
-	privateKey, err := secp256k1.GeneratePrivateKey()
-	if err != nil {
-		return errors.Wrap(err, "Failed to generate private key")
-	}
-
-	fmt.Println("This is your private key, granting access to all wallet funds. Keep it safe. Use it only when sending Kaspa.")
-	fmt.Printf("Private key (hex):\t%s\n\n", privateKey.SerializePrivateKey())
-
-	fmt.Println("This is your public address, where money is to be sent.")
-	publicKey, err := privateKey.SchnorrPublicKey()
-	if err != nil {
-		return errors.Wrap(err, "Failed to generate public key")
-	}
-	publicKeySerialized, err := publicKey.Serialize()
-	if err != nil {
-		return errors.Wrap(err, "Failed to serialize public key")
-	}
-
-	addr, err := util.NewAddressPubKeyHashFromPublicKey(publicKeySerialized[:], conf.ActiveNetParams.Prefix)
-	if err != nil {
-		return errors.Wrap(err, "Failed to generate p2pkh address")
-	}
-	fmt.Printf("Address (%s):\t%s\n", conf.ActiveNetParams.Name, addr)
-
-	return nil
-}

cmd/wallet/send.go

@@ -1,201 +0,0 @@
-package main
-
-import (
-	"encoding/hex"
-	"fmt"
-	"github.com/kaspanet/go-secp256k1"
-	"github.com/kaspanet/kaspad/app/appmessage"
-	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/constants"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/transactionid"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/txscript"
-	"github.com/kaspanet/kaspad/infrastructure/network/rpcclient"
-	"github.com/kaspanet/kaspad/util"
-	"github.com/pkg/errors"
-)
-
-const feeSompis uint64 = 1000
-
-func send(conf *sendConfig) error {
-	toAddress, err := util.DecodeAddress(conf.ToAddress, conf.ActiveNetParams.Prefix)
-	if err != nil {
-		return err
-	}
-
-	keyPair, publicKey, err := parsePrivateKey(conf.PrivateKey)
-	if err != nil {
-		return err
-	}
-
-	serializedPublicKey, err := publicKey.Serialize()
-	if err != nil {
-		return err
-	}
-	fromAddress, err := util.NewAddressPubKeyHashFromPublicKey(serializedPublicKey[:], conf.ActiveNetParams.Prefix)
-	if err != nil {
-		return err
-	}
-
-	client, err := rpcclient.NewRPCClient(conf.RPCServer)
-	if err != nil {
-		return err
-	}
-	utxos, err := fetchSpendableUTXOs(conf, client, fromAddress.String())
-	if err != nil {
-		return err
-	}
-
-	sendAmountSompi := uint64(conf.SendAmount * util.SompiPerKaspa)
-	totalToSend := sendAmountSompi + feeSompis
-
-	selectedUTXOs, changeSompi, err := selectUTXOs(utxos, totalToSend)
-	if err != nil {
-		return err
-	}
-
-	rpcTransaction, err := generateTransaction(keyPair, selectedUTXOs, sendAmountSompi, changeSompi, toAddress, fromAddress)
-	if err != nil {
-		return err
-	}
-
-	transactionID, err := sendTransaction(client, rpcTransaction)
-	if err != nil {
-		return err
-	}
-
-	fmt.Println("Transaction was sent successfully")
-	fmt.Printf("Transaction ID: \t%s\n", transactionID)
-
-	return nil
-}
-
-func parsePrivateKey(privateKeyHex string) (*secp256k1.SchnorrKeyPair, *secp256k1.SchnorrPublicKey, error) {
-	privateKeyBytes, err := hex.DecodeString(privateKeyHex)
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "Error parsing private key hex")
-	}
-	keyPair, err := secp256k1.DeserializePrivateKeyFromSlice(privateKeyBytes)
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "Error deserializing private key")
-	}
-	publicKey, err := keyPair.SchnorrPublicKey()
-	if err != nil {
-		return nil, nil, errors.Wrap(err, "Error generating public key")
-	}
-	return keyPair, publicKey, nil
-}
-
-func fetchSpendableUTXOs(conf *sendConfig, client *rpcclient.RPCClient, address string) ([]*appmessage.UTXOsByAddressesEntry, error) {
-	getUTXOsByAddressesResponse, err := client.GetUTXOsByAddresses([]string{address})
-	if err != nil {
-		return nil, err
-	}
-	virtualSelectedParentBlueScoreResponse, err := client.GetVirtualSelectedParentBlueScore()
-	if err != nil {
-		return nil, err
-	}
-	virtualSelectedParentBlueScore := virtualSelectedParentBlueScoreResponse.BlueScore
-
-	spendableUTXOs := make([]*appmessage.UTXOsByAddressesEntry, 0)
-	for _, entry := range getUTXOsByAddressesResponse.Entries {
-		if !isUTXOSpendable(entry, virtualSelectedParentBlueScore, conf.ActiveNetParams.BlockCoinbaseMaturity) {
-			continue
-		}
-		spendableUTXOs = append(spendableUTXOs, entry)
-	}
-	return spendableUTXOs, nil
-}
-
-func selectUTXOs(utxos []*appmessage.UTXOsByAddressesEntry, totalToSpend uint64) (
-	selectedUTXOs []*appmessage.UTXOsByAddressesEntry, changeSompi uint64, err error) {
-
-	selectedUTXOs = []*appmessage.UTXOsByAddressesEntry{}
-	totalValue := uint64(0)
-
-	for _, utxo := range utxos {
-		selectedUTXOs = append(selectedUTXOs, utxo)
-		totalValue += utxo.UTXOEntry.Amount
-
-		if totalValue >= totalToSpend {
-			break
-		}
-	}
-
-	if totalValue < totalToSpend {
-		return nil, 0, errors.Errorf("Insufficient funds for send: %f required, while only %f available",
-			float64(totalToSpend)/util.SompiPerKaspa, float64(totalValue)/util.SompiPerKaspa)
-	}
-
-	return selectedUTXOs, totalValue - totalToSpend, nil
-}
-
-func generateTransaction(keyPair *secp256k1.SchnorrKeyPair, selectedUTXOs []*appmessage.UTXOsByAddressesEntry,
-	sompisToSend uint64, change uint64, toAddress util.Address,
-	fromAddress util.Address) (*appmessage.RPCTransaction, error) {
-
-	inputs := make([]*externalapi.DomainTransactionInput, len(selectedUTXOs))
-	for i, utxo := range selectedUTXOs {
-		outpointTransactionIDBytes, err := hex.DecodeString(utxo.Outpoint.TransactionID)
-		if err != nil {
-			return nil, err
-		}
-		outpointTransactionID, err := transactionid.FromBytes(outpointTransactionIDBytes)
-		if err != nil {
-			return nil, err
-		}
-		outpoint := externalapi.DomainOutpoint{
-			TransactionID: *outpointTransactionID,
-			Index:         utxo.Outpoint.Index,
-		}
-		inputs[i] = &externalapi.DomainTransactionInput{PreviousOutpoint: outpoint}
-	}
-
-	toScript, err := txscript.PayToAddrScript(toAddress)
-	if err != nil {
-		return nil, err
-	}
-	mainOutput := &externalapi.DomainTransactionOutput{
-		Value:           sompisToSend,
-		ScriptPublicKey: toScript,
-	}
-	fromScript, err := txscript.PayToAddrScript(fromAddress)
-	if err != nil {
-		return nil, err
-	}
-	changeOutput := &externalapi.DomainTransactionOutput{
-		Value:           change,
-		ScriptPublicKey: fromScript,
-	}
-	outputs := []*externalapi.DomainTransactionOutput{mainOutput, changeOutput}
-
-	domainTransaction := &externalapi.DomainTransaction{
-		Version:      constants.MaxTransactionVersion,
-		Inputs:       inputs,
-		Outputs:      outputs,
-		LockTime:     0,
-		SubnetworkID: subnetworks.SubnetworkIDNative,
-		Gas:          0,
-		Payload:      nil,
-		PayloadHash:  externalapi.DomainHash{},
-	}
-
-	for i, input := range domainTransaction.Inputs {
-		signatureScript, err := txscript.SignatureScript(domainTransaction, i, fromScript, txscript.SigHashAll, keyPair)
-		if err != nil {
-			return nil, err
-		}
-		input.SignatureScript = signatureScript
-	}
-
-	rpcTransaction := appmessage.DomainTransactionToRPCTransaction(domainTransaction)
-	return rpcTransaction, nil
-}
-
-func sendTransaction(client *rpcclient.RPCClient, rpcTransaction *appmessage.RPCTransaction) (string, error) {
-	submitTransactionResponse, err := client.SubmitTransaction(rpcTransaction)
-	if err != nil {
-		return "", errors.Wrapf(err, "error submitting transaction")
-	}
-	return submitTransactionResponse.TransactionID, nil
-}

domain/consensus/consensus.go

@@ -46,6 +46,7 @@ type consensus struct {
 	utxoDiffStore             model.UTXODiffStore
 	finalityStore             model.FinalityStore
 	headersSelectedChainStore model.HeadersSelectedChainStore
+	daaBlocksStore            model.DAABlocksStore
 }
 
 // BuildBlock builds a block over the current state, with the transactions
@@ -74,30 +75,34 @@ func (s *consensus) ValidateTransactionAndPopulateWithConsensusData(transaction
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
+	stagingArea := model.NewStagingArea()
+
 	err := s.transactionValidator.ValidateTransactionInIsolation(transaction)
 	if err != nil {
 		return err
 	}
 
-	err = s.consensusStateManager.PopulateTransactionWithUTXOEntries(transaction)
+	err = s.consensusStateManager.PopulateTransactionWithUTXOEntries(stagingArea, transaction)
 	if err != nil {
 		return err
 	}
 
-	virtualSelectedParentMedianTime, err := s.pastMedianTimeManager.PastMedianTime(model.VirtualBlockHash)
+	virtualSelectedParentMedianTime, err := s.pastMedianTimeManager.PastMedianTime(stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return err
 	}
 
-	return s.transactionValidator.ValidateTransactionInContextAndPopulateMassAndFee(transaction,
-		model.VirtualBlockHash, virtualSelectedParentMedianTime)
+	return s.transactionValidator.ValidateTransactionInContextAndPopulateMassAndFee(
+		stagingArea, transaction, model.VirtualBlockHash, virtualSelectedParentMedianTime)
 }
 
 func (s *consensus) GetBlock(blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	block, err := s.blockStore.Block(s.databaseContext, blockHash)
+	stagingArea := model.NewStagingArea()
+
+	block, err := s.blockStore.Block(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		if errors.Is(err, database.ErrNotFound) {
 			return nil, errors.Wrapf(err, "block %s does not exist", blockHash)
@@ -111,7 +116,9 @@ func (s *consensus) GetBlockHeader(blockHash *externalapi.DomainHash) (externala
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	blockHeader, err := s.blockHeaderStore.BlockHeader(s.databaseContext, blockHash)
+	stagingArea := model.NewStagingArea()
+
+	blockHeader, err := s.blockHeaderStore.BlockHeader(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		if errors.Is(err, database.ErrNotFound) {
 			return nil, errors.Wrapf(err, "block header %s does not exist", blockHash)
@@ -125,9 +132,11 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
+	stagingArea := model.NewStagingArea()
+
 	blockInfo := &externalapi.BlockInfo{}
 
-	exists, err := s.blockStatusStore.Exists(s.databaseContext, blockHash)
+	exists, err := s.blockStatusStore.Exists(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -136,7 +145,7 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 		return blockInfo, nil
 	}
 
-	blockStatus, err := s.blockStatusStore.Get(s.databaseContext, blockHash)
+	blockStatus, err := s.blockStatusStore.Get(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -147,7 +156,7 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 		return blockInfo, nil
 	}
 
-	ghostdagData, err := s.ghostdagDataStore.Get(s.databaseContext, blockHash)
+	ghostdagData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -157,55 +166,74 @@ func (s *consensus) GetBlockInfo(blockHash *externalapi.DomainHash) (*externalap
 	return blockInfo, nil
 }
 
-func (s *consensus) GetBlockChildren(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
-	blockRelation, err := s.blockRelationStore.BlockRelation(s.databaseContext, blockHash)
+func (s *consensus) GetBlockRelations(blockHash *externalapi.DomainHash) (
+	parents []*externalapi.DomainHash, selectedParent *externalapi.DomainHash,
+	children []*externalapi.DomainHash, err error) {
+
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	stagingArea := model.NewStagingArea()
+
+	blockRelation, err := s.blockRelationStore.BlockRelation(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
-		return nil, err
+		return nil, nil, nil, err
 	}
 
-	return blockRelation.Children, nil
+	blockGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, blockHash)
+	if err != nil {
+		return nil, nil, nil, err
+	}
+
+	return blockRelation.Parents, blockGHOSTDAGData.SelectedParent(), blockRelation.Children, nil
 }
 
 func (s *consensus) GetBlockAcceptanceData(blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(blockHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.acceptanceDataStore.Get(s.databaseContext, blockHash)
+	return s.acceptanceDataStore.Get(s.databaseContext, stagingArea, blockHash)
 }
 
-func (s *consensus) GetHashesBetween(lowHash, highHash *externalapi.DomainHash,
-	maxBlueScoreDifference uint64) ([]*externalapi.DomainHash, error) {
+func (s *consensus) GetHashesBetween(lowHash, highHash *externalapi.DomainHash, maxBlueScoreDifference uint64) (
+	hashes []*externalapi.DomainHash, actualHighHash *externalapi.DomainHash, err error) {
 
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(lowHash)
+	stagingArea := model.NewStagingArea()
+
+	err = s.validateBlockHashExists(stagingArea, lowHash)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
-	err = s.validateBlockHashExists(highHash)
+	err = s.validateBlockHashExists(stagingArea, highHash)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	return s.syncManager.GetHashesBetween(lowHash, highHash, maxBlueScoreDifference)
+	return s.syncManager.GetHashesBetween(stagingArea, lowHash, highHash, maxBlueScoreDifference)
 }
 
 func (s *consensus) GetMissingBlockBodyHashes(highHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(highHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, highHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.GetMissingBlockBodyHashes(highHash)
+	return s.syncManager.GetMissingBlockBodyHashes(stagingArea, highHash)
 }
 
 func (s *consensus) GetPruningPointUTXOs(expectedPruningPointHash *externalapi.DomainHash,
@@ -214,7 +242,9 @@ func (s *consensus) GetPruningPointUTXOs(expectedPruningPointHash *externalapi.D
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	pruningPointHash, err := s.pruningStore.PruningPoint(s.databaseContext)
+	stagingArea := model.NewStagingArea()
+
+	pruningPointHash, err := s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
 	if err != nil {
 		return nil, err
 	}
@@ -238,7 +268,9 @@ func (s *consensus) GetVirtualUTXOs(expectedVirtualParents []*externalapi.Domain
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	virtualParents, err := s.dagTopologyManager.Parents(model.VirtualBlockHash)
+	stagingArea := model.NewStagingArea()
+
+	virtualParents, err := s.dagTopologyManager.Parents(stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -260,7 +292,9 @@ func (s *consensus) PruningPoint() (*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	return s.pruningStore.PruningPoint(s.databaseContext)
+	stagingArea := model.NewStagingArea()
+
+	return s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
 }
 
 func (s *consensus) ClearImportedPruningPointData() error {
@@ -288,7 +322,9 @@ func (s *consensus) GetVirtualSelectedParent() (*externalapi.DomainHash, error)
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, model.VirtualBlockHash)
+	stagingArea := model.NewStagingArea()
+
+	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -299,26 +335,30 @@ func (s *consensus) Tips() ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	return s.consensusStateStore.Tips(s.databaseContext)
+	stagingArea := model.NewStagingArea()
+
+	return s.consensusStateStore.Tips(stagingArea, s.databaseContext)
 }
 
 func (s *consensus) GetVirtualInfo() (*externalapi.VirtualInfo, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	blockRelations, err := s.blockRelationStore.BlockRelation(s.databaseContext, model.VirtualBlockHash)
+	stagingArea := model.NewStagingArea()
+
+	blockRelations, err := s.blockRelationStore.BlockRelation(s.databaseContext, stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	bits, err := s.difficultyManager.RequiredDifficulty(model.VirtualBlockHash)
+	bits, err := s.difficultyManager.RequiredDifficulty(stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	pastMedianTime, err := s.pastMedianTimeManager.PastMedianTime(model.VirtualBlockHash)
+	pastMedianTime, err := s.pastMedianTimeManager.PastMedianTime(stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
-	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, model.VirtualBlockHash)
+	virtualGHOSTDAGData, err := s.ghostdagDataStore.Get(s.databaseContext, stagingArea, model.VirtualBlockHash)
 	if err != nil {
 		return nil, err
 	}
@@ -335,76 +375,87 @@ func (s *consensus) CreateBlockLocator(lowHash, highHash *externalapi.DomainHash
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(lowHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, lowHash)
 	if err != nil {
 		return nil, err
 	}
-	err = s.validateBlockHashExists(highHash)
+	err = s.validateBlockHashExists(stagingArea, highHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.CreateBlockLocator(lowHash, highHash, limit)
+	return s.syncManager.CreateBlockLocator(stagingArea, lowHash, highHash, limit)
 }
 
 func (s *consensus) CreateFullHeadersSelectedChainBlockLocator() (externalapi.BlockLocator, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	lowHash, err := s.pruningStore.PruningPoint(s.databaseContext)
+	stagingArea := model.NewStagingArea()
+
+	lowHash, err := s.pruningStore.PruningPoint(s.databaseContext, stagingArea)
 	if err != nil {
 		return nil, err
 	}
 
-	highHash, err := s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext)
+	highHash, err := s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext, stagingArea)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.syncManager.CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
+	return s.syncManager.CreateHeadersSelectedChainBlockLocator(stagingArea, lowHash, highHash)
 }
 
-func (s *consensus) CreateHeadersSelectedChainBlockLocator(lowHash,
-	highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
+func (s *consensus) CreateHeadersSelectedChainBlockLocator(lowHash, highHash *externalapi.DomainHash) (externalapi.BlockLocator, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	return s.syncManager.CreateHeadersSelectedChainBlockLocator(lowHash, highHash)
+	stagingArea := model.NewStagingArea()
+
+	return s.syncManager.CreateHeadersSelectedChainBlockLocator(stagingArea, lowHash, highHash)
 }
 
 func (s *consensus) GetSyncInfo() (*externalapi.SyncInfo, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	return s.syncManager.GetSyncInfo()
+	stagingArea := model.NewStagingArea()
+
+	return s.syncManager.GetSyncInfo(stagingArea)
 }
 
 func (s *consensus) IsValidPruningPoint(blockHash *externalapi.DomainHash) (bool, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(blockHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, blockHash)
 	if err != nil {
 		return false, err
 	}
 
-	return s.pruningManager.IsValidPruningPoint(blockHash)
+	return s.pruningManager.IsValidPruningPoint(stagingArea, blockHash)
 }
 
 func (s *consensus) GetVirtualSelectedParentChainFromBlock(blockHash *externalapi.DomainHash) (*externalapi.SelectedChainPath, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(blockHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.consensusStateManager.GetVirtualSelectedParentChainFromBlock(blockHash)
+	return s.consensusStateManager.GetVirtualSelectedParentChainFromBlock(stagingArea, blockHash)
 }
 
-func (s *consensus) validateBlockHashExists(blockHash *externalapi.DomainHash) error {
-	exists, err := s.blockStatusStore.Exists(s.databaseContext, blockHash)
+func (s *consensus) validateBlockHashExists(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) error {
+	exists, err := s.blockStatusStore.Exists(s.databaseContext, stagingArea, blockHash)
 	if err != nil {
 		return err
 	}
@@ -418,33 +469,39 @@ func (s *consensus) IsInSelectedParentChainOf(blockHashA *externalapi.DomainHash
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(blockHashA)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, blockHashA)
 	if err != nil {
 		return false, err
 	}
-	err = s.validateBlockHashExists(blockHashB)
+	err = s.validateBlockHashExists(stagingArea, blockHashB)
 	if err != nil {
 		return false, err
 	}
 
-	return s.dagTopologyManager.IsInSelectedParentChainOf(blockHashA, blockHashB)
+	return s.dagTopologyManager.IsInSelectedParentChainOf(stagingArea, blockHashA, blockHashB)
 }
 
 func (s *consensus) GetHeadersSelectedTip() (*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	return s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext)
+	stagingArea := model.NewStagingArea()
+
+	return s.headersSelectedTipStore.HeadersSelectedTip(s.databaseContext, stagingArea)
 }
 
 func (s *consensus) Anticone(blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
 
-	err := s.validateBlockHashExists(blockHash)
+	stagingArea := model.NewStagingArea()
+
+	err := s.validateBlockHashExists(stagingArea, blockHash)
 	if err != nil {
 		return nil, err
 	}
 
-	return s.dagTraversalManager.Anticone(blockHash)
+	return s.dagTraversalManager.Anticone(stagingArea, blockHash)
 }

domain/consensus/constructors.go

@@ -13,9 +13,9 @@ type GHOSTDAGManagerConstructor func(model.DBReader, model.DAGTopologyManager,
 
 // DifficultyManagerConstructor is the function signature for a constructor of a type implementing model.DifficultyManager
 type DifficultyManagerConstructor func(model.DBReader, model.GHOSTDAGManager, model.GHOSTDAGDataStore,
-	model.BlockHeaderStore, model.DAGTopologyManager, model.DAGTraversalManager, *big.Int, int, bool, time.Duration,
+	model.BlockHeaderStore, model.DAABlocksStore, model.DAGTopologyManager, model.DAGTraversalManager, *big.Int, int, bool, time.Duration,
 	*externalapi.DomainHash) model.DifficultyManager
 
 // PastMedianTimeManagerConstructor is the function signature for a constructor of a type implementing model.PastMedianTimeManager
 type PastMedianTimeManagerConstructor func(int, model.DBReader, model.DAGTraversalManager, model.BlockHeaderStore,
-	model.GHOSTDAGDataStore) model.PastMedianTimeManager
+	model.GHOSTDAGDataStore, *externalapi.DomainHash) model.PastMedianTimeManager

domain/consensus/database/binaryserialization/common.go

@@ -0,0 +1,24 @@
+package binaryserialization
+
+import (
+	"encoding/binary"
+	"github.com/pkg/errors"
+)
+
+const uint64Length = 8
+
+// SerializeUint64 serializes a uint64
+func SerializeUint64(value uint64) []byte {
+	var keyBytes [uint64Length]byte
+	binary.LittleEndian.PutUint64(keyBytes[:], value)
+	return keyBytes[:]
+}
+
+// DeserializeUint64 deserializes bytes to uint64
+func DeserializeUint64(valueBytes []byte) (uint64, error) {
+	if len(valueBytes) != uint64Length {
+		return 0, errors.Errorf("the given value is %d bytes so it cannot be deserialized into uint64",
+			len(valueBytes))
+	}
+	return binary.LittleEndian.Uint64(valueBytes), nil
+}

domain/consensus/database/binaryserialization/hash.go

@@ -1,13 +1,47 @@
 package binaryserialization
 
-import "github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/pkg/errors"
+)
 
 // SerializeHash serializes hash to a slice of bytes
 func SerializeHash(hash *externalapi.DomainHash) []byte {
 	return hash.ByteSlice()
 }
 
-// DeserializeHash a slice of bytes to a hash
+// DeserializeHash deserializes a slice of bytes to a hash
 func DeserializeHash(hashBytes []byte) (*externalapi.DomainHash, error) {
 	return externalapi.NewDomainHashFromByteSlice(hashBytes)
 }
+
+// SerializeHashes serializes a slice of hashes to a slice of bytes
+func SerializeHashes(hashes []*externalapi.DomainHash) []byte {
+	buff := make([]byte, len(hashes)*externalapi.DomainHashSize)
+	for i, hash := range hashes {
+		copy(buff[externalapi.DomainHashSize*i:], hash.ByteSlice())
+	}
+
+	return buff
+}
+
+// DeserializeHashes deserializes a slice of bytes to a slice of hashes
+func DeserializeHashes(hashesBytes []byte) ([]*externalapi.DomainHash, error) {
+	if len(hashesBytes)%externalapi.DomainHashSize != 0 {
+		return nil, errors.Errorf("The length of hashBytes is not divisible by externalapi.DomainHashSize (%d)",
+			externalapi.DomainHashSize)
+	}
+
+	numHashes := len(hashesBytes) / externalapi.DomainHashSize
+	hashes := make([]*externalapi.DomainHash, numHashes)
+	for i := 0; i < numHashes; i++ {
+		var err error
+		start := i * externalapi.DomainHashSize
+		end := i*externalapi.DomainHashSize + externalapi.DomainHashSize
+		hashes[i], err = externalapi.NewDomainHashFromByteSlice(hashesBytes[start:end])
+		if err != nil {
+			return nil, err
+		}
+	}
+	return hashes, nil
+}

domain/consensus/database/binaryserialization/selected_chain.go

@@ -1,15 +0,0 @@
-package binaryserialization
-
-import "encoding/binary"
-
-// SerializeChainBlockIndex serializes chain block index
-func SerializeChainBlockIndex(index uint64) []byte {
-	var keyBytes [8]byte
-	binary.LittleEndian.PutUint64(keyBytes[:], index)
-	return keyBytes[:]
-}
-
-// DeserializeChainBlockIndex deserializes chain block index to uint64
-func DeserializeChainBlockIndex(indexBytes []byte) uint64 {
-	return binary.LittleEndian.Uint64(indexBytes)
-}

domain/consensus/database/serialization/dbobjects.pb.go

@@ -241,7 +241,6 @@ type DbTransaction struct {
 	LockTime     uint64                 `protobuf:"varint,4,opt,name=lockTime,proto3" json:"lockTime,omitempty"`
 	SubnetworkID *DbSubnetworkId        `protobuf:"bytes,5,opt,name=subnetworkID,proto3" json:"subnetworkID,omitempty"`
 	Gas          uint64                 `protobuf:"varint,6,opt,name=gas,proto3" json:"gas,omitempty"`
-	PayloadHash  *DbHash                `protobuf:"bytes,7,opt,name=payloadHash,proto3" json:"payloadHash,omitempty"`
 	Payload      []byte                 `protobuf:"bytes,8,opt,name=payload,proto3" json:"payload,omitempty"`
 }
 
@@ -319,13 +318,6 @@ func (x *DbTransaction) GetGas() uint64 {
 	return 0
 }
 
-func (x *DbTransaction) GetPayloadHash() *DbHash {
-	if x != nil {
-		return x.PayloadHash
-	}
-	return nil
-}
-
 func (x *DbTransaction) GetPayload() []byte {
 	if x != nil {
 		return x.Payload
@@ -1228,7 +1220,7 @@ type DbUtxoEntry struct {
 
 	Amount          uint64             `protobuf:"varint,1,opt,name=amount,proto3" json:"amount,omitempty"`
 	ScriptPublicKey *DbScriptPublicKey `protobuf:"bytes,2,opt,name=scriptPublicKey,proto3" json:"scriptPublicKey,omitempty"`
-	BlockBlueScore  uint64             `protobuf:"varint,3,opt,name=blockBlueScore,proto3" json:"blockBlueScore,omitempty"`
+	BlockDaaScore   uint64             `protobuf:"varint,3,opt,name=blockDaaScore,proto3" json:"blockDaaScore,omitempty"`
 	IsCoinbase      bool               `protobuf:"varint,4,opt,name=isCoinbase,proto3" json:"isCoinbase,omitempty"`
 }
 
@@ -1278,9 +1270,9 @@ func (x *DbUtxoEntry) GetScriptPublicKey() *DbScriptPublicKey {
 	return nil
 }
 
-func (x *DbUtxoEntry) GetBlockBlueScore() uint64 {
+func (x *DbUtxoEntry) GetBlockDaaScore() uint64 {
 	if x != nil {
-		return x.BlockBlueScore
+		return x.BlockDaaScore
 	}
 	return 0
 }
@@ -1653,7 +1645,7 @@ var file_dbobjects_proto_rawDesc = []byte{
 	0x28, 0x0d, 0x52, 0x04, 0x62, 0x69, 0x74, 0x73, 0x12, 0x14, 0x0a, 0x05, 0x6e, 0x6f, 0x6e, 0x63,
 	0x65, 0x18, 0x08, 0x20, 0x01, 0x28, 0x04, 0x52, 0x05, 0x6e, 0x6f, 0x6e, 0x63, 0x65, 0x22, 0x1c,
 	0x0a, 0x06, 0x44, 0x62, 0x48, 0x61, 0x73, 0x68, 0x12, 0x12, 0x0a, 0x04, 0x68, 0x61, 0x73, 0x68,
-	0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x68, 0x61, 0x73, 0x68, 0x22, 0xe6, 0x02, 0x0a,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x68, 0x61, 0x73, 0x68, 0x22, 0xad, 0x02, 0x0a,
 	0x0d, 0x44, 0x62, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x18,
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@@ -1671,188 +1663,184 @@ var file_dbobjects_proto_rawDesc = []byte{
 	0x69, 0x6f, 0x6e, 0x2e, 0x44, 0x62, 0x53, 0x75, 0x62, 0x6e, 0x65, 0x74, 0x77, 0x6f, 0x72, 0x6b,
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 }
 
 var (
@@ -1907,38 +1895,37 @@ var file_dbobjects_proto_depIdxs = []int32{
 	4,  // 6: serialization.DbTransaction.inputs:type_name -> serialization.DbTransactionInput
 	7,  // 7: serialization.DbTransaction.outputs:type_name -> serialization.DbTransactionOutput
 	8,  // 8: serialization.DbTransaction.subnetworkID:type_name -> serialization.DbSubnetworkId
-	2,  // 9: serialization.DbTransaction.payloadHash:type_name -> serialization.DbHash
-	5,  // 10: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
-	6,  // 11: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
-	19, // 12: serialization.DbTransactionOutput.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
-	10, // 13: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
-	11, // 14: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
-	2,  // 15: serialization.DbBlockAcceptanceData.blockHash:type_name -> serialization.DbHash
-	3,  // 16: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
-	20, // 17: serialization.DbTransactionAcceptanceData.transactionInputUtxoEntries:type_name -> serialization.DbUtxoEntry
-	2,  // 18: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
-	2,  // 19: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
-	2,  // 20: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
-	2,  // 21: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
-	2,  // 22: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
-	15, // 23: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
-	2,  // 24: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
-	18, // 25: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
-	5,  // 26: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
-	20, // 27: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
-	19, // 28: serialization.DbUtxoEntry.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
-	2,  // 29: serialization.DbReachabilityData.children:type_name -> serialization.DbHash
-	2,  // 30: serialization.DbReachabilityData.parent:type_name -> serialization.DbHash
-	22, // 31: serialization.DbReachabilityData.interval:type_name -> serialization.DbReachabilityInterval
-	2,  // 32: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
-	18, // 33: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
-	18, // 34: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
-	2,  // 35: serialization.DbTips.tips:type_name -> serialization.DbHash
-	36, // [36:36] is the sub-list for method output_type
-	36, // [36:36] is the sub-list for method input_type
-	36, // [36:36] is the sub-list for extension type_name
-	36, // [36:36] is the sub-list for extension extendee
-	0,  // [0:36] is the sub-list for field type_name
+	5,  // 9: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
+	6,  // 10: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
+	19, // 11: serialization.DbTransactionOutput.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
+	10, // 12: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
+	11, // 13: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
+	2,  // 14: serialization.DbBlockAcceptanceData.blockHash:type_name -> serialization.DbHash
+	3,  // 15: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
+	20, // 16: serialization.DbTransactionAcceptanceData.transactionInputUtxoEntries:type_name -> serialization.DbUtxoEntry
+	2,  // 17: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
+	2,  // 18: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
+	2,  // 19: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
+	2,  // 20: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
+	2,  // 21: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
+	15, // 22: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
+	2,  // 23: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
+	18, // 24: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
+	5,  // 25: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
+	20, // 26: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
+	19, // 27: serialization.DbUtxoEntry.scriptPublicKey:type_name -> serialization.DbScriptPublicKey
+	2,  // 28: serialization.DbReachabilityData.children:type_name -> serialization.DbHash
+	2,  // 29: serialization.DbReachabilityData.parent:type_name -> serialization.DbHash
+	22, // 30: serialization.DbReachabilityData.interval:type_name -> serialization.DbReachabilityInterval
+	2,  // 31: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
+	18, // 32: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
+	18, // 33: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
+	2,  // 34: serialization.DbTips.tips:type_name -> serialization.DbHash
+	35, // [35:35] is the sub-list for method output_type
+	35, // [35:35] is the sub-list for method input_type
+	35, // [35:35] is the sub-list for extension type_name
+	35, // [35:35] is the sub-list for extension extendee
+	0,  // [0:35] is the sub-list for field type_name
 }
 
 func init() { file_dbobjects_proto_init() }

domain/consensus/database/serialization/dbobjects.proto

@@ -30,7 +30,6 @@ message DbTransaction {
   uint64 lockTime = 4;
   DbSubnetworkId subnetworkID = 5;
   uint64 gas = 6;
-  DbHash payloadHash = 7;
   bytes payload = 8;
 }
 
@@ -118,7 +117,7 @@ message DbScriptPublicKey {
 message DbUtxoEntry {
   uint64 amount = 1;
   DbScriptPublicKey scriptPublicKey = 2;
-  uint64 blockBlueScore = 3;
+  uint64 blockDaaScore = 3;
   bool isCoinbase = 4;
 }
 

domain/consensus/database/serialization/transaction.go

@@ -33,7 +33,6 @@ func DomainTransactionToDbTransaction(domainTransaction *externalapi.DomainTrans
 		LockTime:     domainTransaction.LockTime,
 		SubnetworkID: DomainSubnetworkIDToDbSubnetworkID(&domainTransaction.SubnetworkID),
 		Gas:          domainTransaction.Gas,
-		PayloadHash:  DomainHashToDbHash(&domainTransaction.PayloadHash),
 		Payload:      domainTransaction.Payload,
 	}
 }
@@ -44,10 +43,6 @@ func DbTransactionToDomainTransaction(dbTransaction *DbTransaction) (*externalap
 	if err != nil {
 		return nil, err
 	}
-	domainPayloadHash, err := DbHashToDomainHash(dbTransaction.PayloadHash)
-	if err != nil {
-		return nil, err
-	}
 
 	domainInputs := make([]*externalapi.DomainTransactionInput, len(dbTransaction.Inputs))
 	for i, dbTransactionInput := range dbTransaction.Inputs {
@@ -84,7 +79,6 @@ func DbTransactionToDomainTransaction(dbTransaction *DbTransaction) (*externalap
 		LockTime:     dbTransaction.LockTime,
 		SubnetworkID: *domainSubnetworkID,
 		Gas:          dbTransaction.Gas,
-		PayloadHash:  *domainPayloadHash,
 		Payload:      dbTransaction.Payload,
 	}, nil
 }

domain/consensus/database/serialization/utxo_entry.go

@@ -26,7 +26,7 @@ func UTXOEntryToDBUTXOEntry(utxoEntry externalapi.UTXOEntry) *DbUtxoEntry {
 	return &DbUtxoEntry{
 		Amount:          utxoEntry.Amount(),
 		ScriptPublicKey: dbScriptPublicKey,
-		BlockBlueScore:  utxoEntry.BlockBlueScore(),
+		BlockDaaScore:   utxoEntry.BlockDAAScore(),
 		IsCoinbase:      utxoEntry.IsCoinbase(),
 	}
 }
@@ -37,5 +37,5 @@ func DBUTXOEntryToUTXOEntry(dbUtxoEntry *DbUtxoEntry) (externalapi.UTXOEntry, er
 	if err != nil {
 		return nil, err
 	}
-	return utxo.NewUTXOEntry(dbUtxoEntry.Amount, scriptPublicKey, dbUtxoEntry.IsCoinbase, dbUtxoEntry.BlockBlueScore), nil
+	return utxo.NewUTXOEntry(dbUtxoEntry.Amount, scriptPublicKey, dbUtxoEntry.IsCoinbase, dbUtxoEntry.BlockDaaScore), nil
 }

domain/consensus/datastructures/acceptancedatastore/acceptance_data_staging_shard.go

@@ -0,0 +1,50 @@
+package acceptancedatastore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type acceptanceDataStagingShard struct {
+	store    *acceptanceDataStore
+	toAdd    map[externalapi.DomainHash]externalapi.AcceptanceData
+	toDelete map[externalapi.DomainHash]struct{}
+}
+
+func (ads *acceptanceDataStore) stagingShard(stagingArea *model.StagingArea) *acceptanceDataStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDAcceptanceData, func() model.StagingShard {
+		return &acceptanceDataStagingShard{
+			store:    ads,
+			toAdd:    make(map[externalapi.DomainHash]externalapi.AcceptanceData),
+			toDelete: make(map[externalapi.DomainHash]struct{}),
+		}
+	}).(*acceptanceDataStagingShard)
+}
+
+func (adss *acceptanceDataStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, acceptanceData := range adss.toAdd {
+		acceptanceDataBytes, err := adss.store.serializeAcceptanceData(acceptanceData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(adss.store.hashAsKey(&hash), acceptanceDataBytes)
+		if err != nil {
+			return err
+		}
+		adss.store.cache.Add(&hash, acceptanceData)
+	}
+
+	for hash := range adss.toDelete {
+		err := dbTx.Delete(adss.store.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		adss.store.cache.Remove(&hash)
+	}
+
+	return nil
+}
+
+func (adss *acceptanceDataStagingShard) isStaged() bool {
+	return len(adss.toAdd) != 0 || len(adss.toDelete) != 0
+}

domain/consensus/datastructures/acceptancedatastore/acceptance_data_store.go

@@ -13,62 +13,31 @@ var bucket = database.MakeBucket([]byte("acceptance-data"))
 
 // acceptanceDataStore represents a store of AcceptanceData
 type acceptanceDataStore struct {
-	staging  map[externalapi.DomainHash]externalapi.AcceptanceData
-	toDelete map[externalapi.DomainHash]struct{}
-	cache    *lrucache.LRUCache
+	cache *lrucache.LRUCache
 }
 
 // New instantiates a new AcceptanceDataStore
 func New(cacheSize int, preallocate bool) model.AcceptanceDataStore {
 	return &acceptanceDataStore{
-		staging:  make(map[externalapi.DomainHash]externalapi.AcceptanceData),
-		toDelete: make(map[externalapi.DomainHash]struct{}),
-		cache:    lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given acceptanceData for the given blockHash
-func (ads *acceptanceDataStore) Stage(blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData) {
-	ads.staging[*blockHash] = acceptanceData.Clone()
+func (ads *acceptanceDataStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, acceptanceData externalapi.AcceptanceData) {
+	stagingShard := ads.stagingShard(stagingArea)
+	stagingShard.toAdd[*blockHash] = acceptanceData.Clone()
 }
 
-func (ads *acceptanceDataStore) IsStaged() bool {
-	return len(ads.staging) != 0 || len(ads.toDelete) != 0
-}
-
-func (ads *acceptanceDataStore) Discard() {
-	ads.staging = make(map[externalapi.DomainHash]externalapi.AcceptanceData)
-	ads.toDelete = make(map[externalapi.DomainHash]struct{})
-}
-
-func (ads *acceptanceDataStore) Commit(dbTx model.DBTransaction) error {
-	for hash, acceptanceData := range ads.staging {
-		acceptanceDataBytes, err := ads.serializeAcceptanceData(acceptanceData)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(ads.hashAsKey(&hash), acceptanceDataBytes)
-		if err != nil {
-			return err
-		}
-		ads.cache.Add(&hash, acceptanceData)
-	}
-
-	for hash := range ads.toDelete {
-		err := dbTx.Delete(ads.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		ads.cache.Remove(&hash)
-	}
-
-	ads.Discard()
-	return nil
+func (ads *acceptanceDataStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return ads.stagingShard(stagingArea).isStaged()
 }
 
 // Get gets the acceptanceData associated with the given blockHash
-func (ads *acceptanceDataStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error) {
-	if acceptanceData, ok := ads.staging[*blockHash]; ok {
+func (ads *acceptanceDataStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (externalapi.AcceptanceData, error) {
+	stagingShard := ads.stagingShard(stagingArea)
+
+	if acceptanceData, ok := stagingShard.toAdd[*blockHash]; ok {
 		return acceptanceData.Clone(), nil
 	}
 
@@ -90,12 +59,14 @@ func (ads *acceptanceDataStore) Get(dbContext model.DBReader, blockHash *externa
 }
 
 // Delete deletes the acceptanceData associated with the given blockHash
-func (ads *acceptanceDataStore) Delete(blockHash *externalapi.DomainHash) {
-	if _, ok := ads.staging[*blockHash]; ok {
-		delete(ads.staging, *blockHash)
+func (ads *acceptanceDataStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
+	stagingShard := ads.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+		delete(stagingShard.toAdd, *blockHash)
 		return
 	}
-	ads.toDelete[*blockHash] = struct{}{}
+	stagingShard.toDelete[*blockHash] = struct{}{}
 }
 
 func (ads *acceptanceDataStore) serializeAcceptanceData(acceptanceData externalapi.AcceptanceData) ([]byte, error) {

domain/consensus/datastructures/blockheaderstore/block_header_staging_shard.go

@@ -0,0 +1,69 @@
+package blockheaderstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type blockHeaderStagingShard struct {
+	store    *blockHeaderStore
+	toAdd    map[externalapi.DomainHash]externalapi.BlockHeader
+	toDelete map[externalapi.DomainHash]struct{}
+}
+
+func (bhs *blockHeaderStore) stagingShard(stagingArea *model.StagingArea) *blockHeaderStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockHeader, func() model.StagingShard {
+		return &blockHeaderStagingShard{
+			store:    bhs,
+			toAdd:    make(map[externalapi.DomainHash]externalapi.BlockHeader),
+			toDelete: make(map[externalapi.DomainHash]struct{}),
+		}
+	}).(*blockHeaderStagingShard)
+}
+
+func (bhss *blockHeaderStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, header := range bhss.toAdd {
+		headerBytes, err := bhss.store.serializeHeader(header)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bhss.store.hashAsKey(&hash), headerBytes)
+		if err != nil {
+			return err
+		}
+		bhss.store.cache.Add(&hash, header)
+	}
+
+	for hash := range bhss.toDelete {
+		err := dbTx.Delete(bhss.store.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		bhss.store.cache.Remove(&hash)
+	}
+
+	err := bhss.commitCount(dbTx)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (bhss *blockHeaderStagingShard) commitCount(dbTx model.DBTransaction) error {
+	count := bhss.store.count(bhss)
+	countBytes, err := bhss.store.serializeHeaderCount(count)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(countKey, countBytes)
+	if err != nil {
+		return err
+	}
+	bhss.store.countCached = count
+	return nil
+}
+
+func (bhss *blockHeaderStagingShard) isStaged() bool {
+	return len(bhss.toAdd) != 0 || len(bhss.toDelete) != 0
+}

domain/consensus/datastructures/blockheaderstore/block_header_store.go

@@ -14,18 +14,14 @@ var countKey = database.MakeBucket(nil).Key([]byte("block-headers-count"))
 
 // blockHeaderStore represents a store of blocks
 type blockHeaderStore struct {
-	staging  map[externalapi.DomainHash]externalapi.BlockHeader
-	toDelete map[externalapi.DomainHash]struct{}
-	cache    *lrucache.LRUCache
-	count    uint64
+	cache       *lrucache.LRUCache
+	countCached uint64
 }
 
 // New instantiates a new BlockHeaderStore
 func New(dbContext model.DBReader, cacheSize int, preallocate bool) (model.BlockHeaderStore, error) {
 	blockHeaderStore := &blockHeaderStore{
-		staging:  make(map[externalapi.DomainHash]externalapi.BlockHeader),
-		toDelete: make(map[externalapi.DomainHash]struct{}),
-		cache:    lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 
 	err := blockHeaderStore.initializeCount(dbContext)
@@ -52,57 +48,33 @@ func (bhs *blockHeaderStore) initializeCount(dbContext model.DBReader) error {
 			return err
 		}
 	}
-	bhs.count = count
+	bhs.countCached = count
 	return nil
 }
 
 // Stage stages the given block header for the given blockHash
-func (bhs *blockHeaderStore) Stage(blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader) {
-	bhs.staging[*blockHash] = blockHeader
+func (bhs *blockHeaderStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockHeader externalapi.BlockHeader) {
+	stagingShard := bhs.stagingShard(stagingArea)
+	stagingShard.toAdd[*blockHash] = blockHeader
 }
 
-func (bhs *blockHeaderStore) IsStaged() bool {
-	return len(bhs.staging) != 0 || len(bhs.toDelete) != 0
-}
-
-func (bhs *blockHeaderStore) Discard() {
-	bhs.staging = make(map[externalapi.DomainHash]externalapi.BlockHeader)
-	bhs.toDelete = make(map[externalapi.DomainHash]struct{})
-}
-
-func (bhs *blockHeaderStore) Commit(dbTx model.DBTransaction) error {
-	for hash, header := range bhs.staging {
-		headerBytes, err := bhs.serializeHeader(header)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bhs.hashAsKey(&hash), headerBytes)
-		if err != nil {
-			return err
-		}
-		bhs.cache.Add(&hash, header)
-	}
-
-	for hash := range bhs.toDelete {
-		err := dbTx.Delete(bhs.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		bhs.cache.Remove(&hash)
-	}
-
-	err := bhs.commitCount(dbTx)
-	if err != nil {
-		return err
-	}
-
-	bhs.Discard()
-	return nil
+func (bhs *blockHeaderStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return bhs.stagingShard(stagingArea).isStaged()
 }
 
 // BlockHeader gets the block header associated with the given blockHash
-func (bhs *blockHeaderStore) BlockHeader(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
-	if header, ok := bhs.staging[*blockHash]; ok {
+func (bhs *blockHeaderStore) BlockHeader(dbContext model.DBReader, stagingArea *model.StagingArea,
+	blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
+
+	stagingShard := bhs.stagingShard(stagingArea)
+
+	return bhs.blockHeader(dbContext, stagingShard, blockHash)
+}
+
+func (bhs *blockHeaderStore) blockHeader(dbContext model.DBReader, stagingShard *blockHeaderStagingShard,
+	blockHash *externalapi.DomainHash) (externalapi.BlockHeader, error) {
+
+	if header, ok := stagingShard.toAdd[*blockHash]; ok {
 		return header, nil
 	}
 
@@ -124,8 +96,10 @@ func (bhs *blockHeaderStore) BlockHeader(dbContext model.DBReader, blockHash *ex
 }
 
 // HasBlock returns whether a block header with a given hash exists in the store.
-func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
-	if _, ok := bhs.staging[*blockHash]; ok {
+func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
+	stagingShard := bhs.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -142,11 +116,15 @@ func (bhs *blockHeaderStore) HasBlockHeader(dbContext model.DBReader, blockHash
 }
 
 // BlockHeaders gets the block headers associated with the given blockHashes
-func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error) {
+func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, stagingArea *model.StagingArea,
+	blockHashes []*externalapi.DomainHash) ([]externalapi.BlockHeader, error) {
+
+	stagingShard := bhs.stagingShard(stagingArea)
+
 	headers := make([]externalapi.BlockHeader, len(blockHashes))
 	for i, hash := range blockHashes {
 		var err error
-		headers[i], err = bhs.BlockHeader(dbContext, hash)
+		headers[i], err = bhs.blockHeader(dbContext, stagingShard, hash)
 		if err != nil {
 			return nil, err
 		}
@@ -155,12 +133,14 @@ func (bhs *blockHeaderStore) BlockHeaders(dbContext model.DBReader, blockHashes
 }
 
 // Delete deletes the block associated with the given blockHash
-func (bhs *blockHeaderStore) Delete(blockHash *externalapi.DomainHash) {
-	if _, ok := bhs.staging[*blockHash]; ok {
-		delete(bhs.staging, *blockHash)
+func (bhs *blockHeaderStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
+	stagingShard := bhs.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+		delete(stagingShard.toAdd, *blockHash)
 		return
 	}
-	bhs.toDelete[*blockHash] = struct{}{}
+	stagingShard.toDelete[*blockHash] = struct{}{}
 }
 
 func (bhs *blockHeaderStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
@@ -181,8 +161,14 @@ func (bhs *blockHeaderStore) deserializeHeader(headerBytes []byte) (externalapi.
 	return serialization.DbBlockHeaderToDomainBlockHeader(dbBlockHeader)
 }
 
-func (bhs *blockHeaderStore) Count() uint64 {
-	return bhs.count + uint64(len(bhs.staging)) - uint64(len(bhs.toDelete))
+func (bhs *blockHeaderStore) Count(stagingArea *model.StagingArea) uint64 {
+	stagingShard := bhs.stagingShard(stagingArea)
+
+	return bhs.count(stagingShard)
+}
+
+func (bhs *blockHeaderStore) count(stagingShard *blockHeaderStagingShard) uint64 {
+	return bhs.countCached + uint64(len(stagingShard.toAdd)) - uint64(len(stagingShard.toDelete))
 }
 
 func (bhs *blockHeaderStore) deserializeHeaderCount(countBytes []byte) (uint64, error) {
@@ -194,20 +180,6 @@ func (bhs *blockHeaderStore) deserializeHeaderCount(countBytes []byte) (uint64,
 	return dbBlockHeaderCount.Count, nil
 }
 
-func (bhs *blockHeaderStore) commitCount(dbTx model.DBTransaction) error {
-	count := bhs.Count()
-	countBytes, err := bhs.serializeHeaderCount(count)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(countKey, countBytes)
-	if err != nil {
-		return err
-	}
-	bhs.count = count
-	return nil
-}
-
 func (bhs *blockHeaderStore) serializeHeaderCount(count uint64) ([]byte, error) {
 	dbBlockHeaderCount := &serialization.DbBlockHeaderCount{Count: count}
 	return proto.Marshal(dbBlockHeaderCount)

domain/consensus/datastructures/blockrelationstore/block_relation_staging_shard.go

@@ -0,0 +1,40 @@
+package blockrelationstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type blockRelationStagingShard struct {
+	store *blockRelationStore
+	toAdd map[externalapi.DomainHash]*model.BlockRelations
+}
+
+func (brs *blockRelationStore) stagingShard(stagingArea *model.StagingArea) *blockRelationStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockRelation, func() model.StagingShard {
+		return &blockRelationStagingShard{
+			store: brs,
+			toAdd: make(map[externalapi.DomainHash]*model.BlockRelations),
+		}
+	}).(*blockRelationStagingShard)
+}
+
+func (brss *blockRelationStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, blockRelations := range brss.toAdd {
+		blockRelationBytes, err := brss.store.serializeBlockRelations(blockRelations)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(brss.store.hashAsKey(&hash), blockRelationBytes)
+		if err != nil {
+			return err
+		}
+		brss.store.cache.Add(&hash, blockRelations)
+	}
+
+	return nil
+}
+
+func (brss *blockRelationStagingShard) isStaged() bool {
+	return len(brss.toAdd) != 0
+}

domain/consensus/datastructures/blockrelationstore/block_relation_store.go

@@ -13,49 +13,30 @@ var bucket = database.MakeBucket([]byte("block-relations"))
 
 // blockRelationStore represents a store of BlockRelations
 type blockRelationStore struct {
-	staging map[externalapi.DomainHash]*model.BlockRelations
-	cache   *lrucache.LRUCache
+	cache *lrucache.LRUCache
 }
 
 // New instantiates a new BlockRelationStore
 func New(cacheSize int, preallocate bool) model.BlockRelationStore {
 	return &blockRelationStore{
-		staging: make(map[externalapi.DomainHash]*model.BlockRelations),
-		cache:   lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 }
 
-func (brs *blockRelationStore) StageBlockRelation(blockHash *externalapi.DomainHash, blockRelations *model.BlockRelations) {
-	brs.staging[*blockHash] = blockRelations.Clone()
+func (brs *blockRelationStore) StageBlockRelation(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockRelations *model.BlockRelations) {
+	stagingShard := brs.stagingShard(stagingArea)
+
+	stagingShard.toAdd[*blockHash] = blockRelations.Clone()
 }
 
-func (brs *blockRelationStore) IsStaged() bool {
-	return len(brs.staging) != 0
+func (brs *blockRelationStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return brs.stagingShard(stagingArea).isStaged()
 }
 
-func (brs *blockRelationStore) Discard() {
-	brs.staging = make(map[externalapi.DomainHash]*model.BlockRelations)
-}
+func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*model.BlockRelations, error) {
+	stagingShard := brs.stagingShard(stagingArea)
 
-func (brs *blockRelationStore) Commit(dbTx model.DBTransaction) error {
-	for hash, blockRelations := range brs.staging {
-		blockRelationBytes, err := brs.serializeBlockRelations(blockRelations)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(brs.hashAsKey(&hash), blockRelationBytes)
-		if err != nil {
-			return err
-		}
-		brs.cache.Add(&hash, blockRelations)
-	}
-
-	brs.Discard()
-	return nil
-}
-
-func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*model.BlockRelations, error) {
-	if blockRelations, ok := brs.staging[*blockHash]; ok {
+	if blockRelations, ok := stagingShard.toAdd[*blockHash]; ok {
 		return blockRelations.Clone(), nil
 	}
 
@@ -76,8 +57,10 @@ func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, blockHash
 	return blockRelations.Clone(), nil
 }
 
-func (brs *blockRelationStore) Has(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
-	if _, ok := brs.staging[*blockHash]; ok {
+func (brs *blockRelationStore) Has(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
+	stagingShard := brs.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
 		return true, nil
 	}
 

domain/consensus/datastructures/blockstatusstore/block_status_staging_shard.go

@@ -0,0 +1,40 @@
+package blockstatusstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type blockStatusStagingShard struct {
+	store *blockStatusStore
+	toAdd map[externalapi.DomainHash]externalapi.BlockStatus
+}
+
+func (bss *blockStatusStore) stagingShard(stagingArea *model.StagingArea) *blockStatusStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDBlockStatus, func() model.StagingShard {
+		return &blockStatusStagingShard{
+			store: bss,
+			toAdd: make(map[externalapi.DomainHash]externalapi.BlockStatus),
+		}
+	}).(*blockStatusStagingShard)
+}
+
+func (bsss *blockStatusStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, status := range bsss.toAdd {
+		blockStatusBytes, err := bsss.store.serializeBlockStatus(status)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bsss.store.hashAsKey(&hash), blockStatusBytes)
+		if err != nil {
+			return err
+		}
+		bsss.store.cache.Add(&hash, status)
+	}
+
+	return nil
+}
+
+func (bsss *blockStatusStagingShard) isStaged() bool {
+	return len(bsss.toAdd) != 0
+}

domain/consensus/datastructures/blockstatusstore/block_status_store.go

@@ -13,51 +13,31 @@ var bucket = database.MakeBucket([]byte("block-statuses"))
 
 // blockStatusStore represents a store of BlockStatuses
 type blockStatusStore struct {
-	staging map[externalapi.DomainHash]externalapi.BlockStatus
-	cache   *lrucache.LRUCache
+	cache *lrucache.LRUCache
 }
 
 // New instantiates a new BlockStatusStore
 func New(cacheSize int, preallocate bool) model.BlockStatusStore {
 	return &blockStatusStore{
-		staging: make(map[externalapi.DomainHash]externalapi.BlockStatus),
-		cache:   lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given blockStatus for the given blockHash
-func (bss *blockStatusStore) Stage(blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus) {
-	bss.staging[*blockHash] = blockStatus.Clone()
+func (bss *blockStatusStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockStatus externalapi.BlockStatus) {
+	stagingShard := bss.stagingShard(stagingArea)
+	stagingShard.toAdd[*blockHash] = blockStatus.Clone()
 }
 
-func (bss *blockStatusStore) IsStaged() bool {
-	return len(bss.staging) != 0
-}
-
-func (bss *blockStatusStore) Discard() {
-	bss.staging = make(map[externalapi.DomainHash]externalapi.BlockStatus)
-}
-
-func (bss *blockStatusStore) Commit(dbTx model.DBTransaction) error {
-	for hash, status := range bss.staging {
-		blockStatusBytes, err := bss.serializeBlockStatus(status)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bss.hashAsKey(&hash), blockStatusBytes)
-		if err != nil {
-			return err
-		}
-		bss.cache.Add(&hash, status)
-	}
-
-	bss.Discard()
-	return nil
+func (bss *blockStatusStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return bss.stagingShard(stagingArea).isStaged()
 }
 
 // Get gets the blockStatus associated with the given blockHash
-func (bss *blockStatusStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error) {
-	if status, ok := bss.staging[*blockHash]; ok {
+func (bss *blockStatusStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (externalapi.BlockStatus, error) {
+	stagingShard := bss.stagingShard(stagingArea)
+
+	if status, ok := stagingShard.toAdd[*blockHash]; ok {
 		return status, nil
 	}
 
@@ -79,8 +59,10 @@ func (bss *blockStatusStore) Get(dbContext model.DBReader, blockHash *externalap
 }
 
 // Exists returns true if the blockStatus for the given blockHash exists
-func (bss *blockStatusStore) Exists(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
-	if _, ok := bss.staging[*blockHash]; ok {
+func (bss *blockStatusStore) Exists(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
+	stagingShard := bss.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
 		return true, nil
 	}
 

domain/consensus/datastructures/blockstore/block_staging_shard.go

@@ -0,0 +1,69 @@
+package blockstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type blockStagingShard struct {
+	store    *blockStore
+	toAdd    map[externalapi.DomainHash]*externalapi.DomainBlock
+	toDelete map[externalapi.DomainHash]struct{}
+}
+
+func (bs *blockStore) stagingShard(stagingArea *model.StagingArea) *blockStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDBlock, func() model.StagingShard {
+		return &blockStagingShard{
+			store:    bs,
+			toAdd:    make(map[externalapi.DomainHash]*externalapi.DomainBlock),
+			toDelete: make(map[externalapi.DomainHash]struct{}),
+		}
+	}).(*blockStagingShard)
+}
+
+func (bss *blockStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, block := range bss.toAdd {
+		blockBytes, err := bss.store.serializeBlock(block)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bss.store.hashAsKey(&hash), blockBytes)
+		if err != nil {
+			return err
+		}
+		bss.store.cache.Add(&hash, block)
+	}
+
+	for hash := range bss.toDelete {
+		err := dbTx.Delete(bss.store.hashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		bss.store.cache.Remove(&hash)
+	}
+
+	err := bss.commitCount(dbTx)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (bss *blockStagingShard) commitCount(dbTx model.DBTransaction) error {
+	count := bss.store.count(bss)
+	countBytes, err := bss.store.serializeBlockCount(count)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(countKey, countBytes)
+	if err != nil {
+		return err
+	}
+	bss.store.countCached = count
+	return nil
+}
+
+func (bss *blockStagingShard) isStaged() bool {
+	return len(bss.toAdd) != 0 || len(bss.toDelete) != 0
+}

domain/consensus/datastructures/blockstore/block_store.go

@@ -15,18 +15,14 @@ var countKey = database.MakeBucket(nil).Key([]byte("blocks-count"))
 
 // blockStore represents a store of blocks
 type blockStore struct {
-	staging  map[externalapi.DomainHash]*externalapi.DomainBlock
-	toDelete map[externalapi.DomainHash]struct{}
-	cache    *lrucache.LRUCache
-	count    uint64
+	cache       *lrucache.LRUCache
+	countCached uint64
 }
 
 // New instantiates a new BlockStore
 func New(dbContext model.DBReader, cacheSize int, preallocate bool) (model.BlockStore, error) {
 	blockStore := &blockStore{
-		staging:  make(map[externalapi.DomainHash]*externalapi.DomainBlock),
-		toDelete: make(map[externalapi.DomainHash]struct{}),
-		cache:    lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 
 	err := blockStore.initializeCount(dbContext)
@@ -53,57 +49,29 @@ func (bs *blockStore) initializeCount(dbContext model.DBReader) error {
 			return err
 		}
 	}
-	bs.count = count
+	bs.countCached = count
 	return nil
 }
 
 // Stage stages the given block for the given blockHash
-func (bs *blockStore) Stage(blockHash *externalapi.DomainHash, block *externalapi.DomainBlock) {
-	bs.staging[*blockHash] = block.Clone()
+func (bs *blockStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, block *externalapi.DomainBlock) {
+	stagingShard := bs.stagingShard(stagingArea)
+	stagingShard.toAdd[*blockHash] = block.Clone()
 }
 
-func (bs *blockStore) IsStaged() bool {
-	return len(bs.staging) != 0 || len(bs.toDelete) != 0
-}
-
-func (bs *blockStore) Discard() {
-	bs.staging = make(map[externalapi.DomainHash]*externalapi.DomainBlock)
-	bs.toDelete = make(map[externalapi.DomainHash]struct{})
-}
-
-func (bs *blockStore) Commit(dbTx model.DBTransaction) error {
-	for hash, block := range bs.staging {
-		blockBytes, err := bs.serializeBlock(block)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(bs.hashAsKey(&hash), blockBytes)
-		if err != nil {
-			return err
-		}
-		bs.cache.Add(&hash, block)
-	}
-
-	for hash := range bs.toDelete {
-		err := dbTx.Delete(bs.hashAsKey(&hash))
-		if err != nil {
-			return err
-		}
-		bs.cache.Remove(&hash)
-	}
-
-	err := bs.commitCount(dbTx)
-	if err != nil {
-		return err
-	}
-
-	bs.Discard()
-	return nil
+func (bs *blockStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return bs.stagingShard(stagingArea).isStaged()
 }
 
 // Block gets the block associated with the given blockHash
-func (bs *blockStore) Block(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
-	if block, ok := bs.staging[*blockHash]; ok {
+func (bs *blockStore) Block(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
+	stagingShard := bs.stagingShard(stagingArea)
+
+	return bs.block(dbContext, stagingShard, blockHash)
+}
+
+func (bs *blockStore) block(dbContext model.DBReader, stagingShard *blockStagingShard, blockHash *externalapi.DomainHash) (*externalapi.DomainBlock, error) {
+	if block, ok := stagingShard.toAdd[*blockHash]; ok {
 		return block.Clone(), nil
 	}
 
@@ -125,8 +93,10 @@ func (bs *blockStore) Block(dbContext model.DBReader, blockHash *externalapi.Dom
 }
 
 // HasBlock returns whether a block with a given hash exists in the store.
-func (bs *blockStore) HasBlock(dbContext model.DBReader, blockHash *externalapi.DomainHash) (bool, error) {
-	if _, ok := bs.staging[*blockHash]; ok {
+func (bs *blockStore) HasBlock(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (bool, error) {
+	stagingShard := bs.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
 		return true, nil
 	}
 
@@ -143,11 +113,13 @@ func (bs *blockStore) HasBlock(dbContext model.DBReader, blockHash *externalapi.
 }
 
 // Blocks gets the blocks associated with the given blockHashes
-func (bs *blockStore) Blocks(dbContext model.DBReader, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error) {
+func (bs *blockStore) Blocks(dbContext model.DBReader, stagingArea *model.StagingArea, blockHashes []*externalapi.DomainHash) ([]*externalapi.DomainBlock, error) {
+	stagingShard := bs.stagingShard(stagingArea)
+
 	blocks := make([]*externalapi.DomainBlock, len(blockHashes))
 	for i, hash := range blockHashes {
 		var err error
-		blocks[i], err = bs.Block(dbContext, hash)
+		blocks[i], err = bs.block(dbContext, stagingShard, hash)
 		if err != nil {
 			return nil, err
 		}
@@ -156,12 +128,14 @@ func (bs *blockStore) Blocks(dbContext model.DBReader, blockHashes []*externalap
 }
 
 // Delete deletes the block associated with the given blockHash
-func (bs *blockStore) Delete(blockHash *externalapi.DomainHash) {
-	if _, ok := bs.staging[*blockHash]; ok {
-		delete(bs.staging, *blockHash)
+func (bs *blockStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
+	stagingShard := bs.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.toAdd[*blockHash]; ok {
+		delete(stagingShard.toAdd, *blockHash)
 		return
 	}
-	bs.toDelete[*blockHash] = struct{}{}
+	stagingShard.toDelete[*blockHash] = struct{}{}
 }
 
 func (bs *blockStore) serializeBlock(block *externalapi.DomainBlock) ([]byte, error) {
@@ -182,8 +156,13 @@ func (bs *blockStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
 	return bucket.Key(hash.ByteSlice())
 }
 
-func (bs *blockStore) Count() uint64 {
-	return bs.count + uint64(len(bs.staging)) - uint64(len(bs.toDelete))
+func (bs *blockStore) Count(stagingArea *model.StagingArea) uint64 {
+	stagingShard := bs.stagingShard(stagingArea)
+	return bs.count(stagingShard)
+}
+
+func (bs *blockStore) count(stagingShard *blockStagingShard) uint64 {
+	return bs.countCached + uint64(len(stagingShard.toAdd)) - uint64(len(stagingShard.toDelete))
 }
 
 func (bs *blockStore) deserializeBlockCount(countBytes []byte) (uint64, error) {
@@ -195,20 +174,6 @@ func (bs *blockStore) deserializeBlockCount(countBytes []byte) (uint64, error) {
 	return dbBlockCount.Count, nil
 }
 
-func (bs *blockStore) commitCount(dbTx model.DBTransaction) error {
-	count := bs.Count()
-	countBytes, err := bs.serializeBlockCount(count)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(countKey, countBytes)
-	if err != nil {
-		return err
-	}
-	bs.count = count
-	return nil
-}
-
 func (bs *blockStore) serializeBlockCount(count uint64) ([]byte, error) {
 	dbBlockCount := &serialization.DbBlockCount{Count: count}
 	return proto.Marshal(dbBlockCount)

domain/consensus/datastructures/consensusstatestore/consensus_state_staging_shard.go

@@ -0,0 +1,40 @@
+package consensusstatestore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type consensusStateStagingShard struct {
+	store                  *consensusStateStore
+	tipsStaging            []*externalapi.DomainHash
+	virtualUTXODiffStaging externalapi.UTXODiff
+}
+
+func (bs *consensusStateStore) stagingShard(stagingArea *model.StagingArea) *consensusStateStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDConsensusState, func() model.StagingShard {
+		return &consensusStateStagingShard{
+			store:                  bs,
+			tipsStaging:            nil,
+			virtualUTXODiffStaging: nil,
+		}
+	}).(*consensusStateStagingShard)
+}
+
+func (csss *consensusStateStagingShard) Commit(dbTx model.DBTransaction) error {
+	err := csss.commitTips(dbTx)
+	if err != nil {
+		return err
+	}
+
+	err = csss.commitVirtualUTXODiff(dbTx)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (csss *consensusStateStagingShard) isStaged() bool {
+	return csss.tipsStaging != nil || csss.virtualUTXODiffStaging != nil
+}

domain/consensus/datastructures/consensusstatestore/consensus_state_store.go

@@ -8,9 +8,6 @@ import (
 
 // consensusStateStore represents a store for the current consensus state
 type consensusStateStore struct {
-	tipsStaging            []*externalapi.DomainHash
-	virtualUTXODiffStaging externalapi.UTXODiff
-
 	virtualUTXOSetCache *utxolrucache.LRUCache
 
 	tipsCache []*externalapi.DomainHash
@@ -23,28 +20,6 @@ func New(utxoSetCacheSize int, preallocate bool) model.ConsensusStateStore {
 	}
 }
 
-func (css *consensusStateStore) Discard() {
-	css.tipsStaging = nil
-	css.virtualUTXODiffStaging = nil
-}
-
-func (css *consensusStateStore) Commit(dbTx model.DBTransaction) error {
-	err := css.commitTips(dbTx)
-	if err != nil {
-		return err
-	}
-
-	err = css.commitVirtualUTXODiff(dbTx)
-	if err != nil {
-		return err
-	}
-
-	css.Discard()
-
-	return nil
-}
-
-func (css *consensusStateStore) IsStaged() bool {
-	return css.tipsStaging != nil ||
-		css.virtualUTXODiffStaging != nil
+func (css *consensusStateStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return css.stagingShard(stagingArea).isStaged()
 }

domain/consensus/datastructures/consensusstatestore/tips.go

@@ -10,9 +10,11 @@ import (
 
 var tipsKey = database.MakeBucket(nil).Key([]byte("tips"))
 
-func (css *consensusStateStore) Tips(dbContext model.DBReader) ([]*externalapi.DomainHash, error) {
-	if css.tipsStaging != nil {
-		return externalapi.CloneHashes(css.tipsStaging), nil
+func (css *consensusStateStore) Tips(stagingArea *model.StagingArea, dbContext model.DBReader) ([]*externalapi.DomainHash, error) {
+	stagingShard := css.stagingShard(stagingArea)
+
+	if stagingShard.tipsStaging != nil {
+		return externalapi.CloneHashes(stagingShard.tipsStaging), nil
 	}
 
 	if css.tipsCache != nil {
@@ -32,28 +34,10 @@ func (css *consensusStateStore) Tips(dbContext model.DBReader) ([]*externalapi.D
 	return externalapi.CloneHashes(tips), nil
 }
 
-func (css *consensusStateStore) StageTips(tipHashes []*externalapi.DomainHash) {
-	css.tipsStaging = externalapi.CloneHashes(tipHashes)
-}
+func (css *consensusStateStore) StageTips(stagingArea *model.StagingArea, tipHashes []*externalapi.DomainHash) {
+	stagingShard := css.stagingShard(stagingArea)
 
-func (css *consensusStateStore) commitTips(dbTx model.DBTransaction) error {
-	if css.tipsStaging == nil {
-		return nil
-	}
-
-	tipsBytes, err := css.serializeTips(css.tipsStaging)
-	if err != nil {
-		return err
-	}
-	err = dbTx.Put(tipsKey, tipsBytes)
-	if err != nil {
-		return err
-	}
-	css.tipsCache = css.tipsStaging
-
-	// Note: we don't discard the staging here since that's
-	// being done at the end of Commit()
-	return nil
+	stagingShard.tipsStaging = externalapi.CloneHashes(tipHashes)
 }
 
 func (css *consensusStateStore) serializeTips(tips []*externalapi.DomainHash) ([]byte, error) {
@@ -72,3 +56,21 @@ func (css *consensusStateStore) deserializeTips(tipsBytes []byte) ([]*externalap
 
 	return serialization.DBTipsToTips(dbTips)
 }
+
+func (csss *consensusStateStagingShard) commitTips(dbTx model.DBTransaction) error {
+	if csss.tipsStaging == nil {
+		return nil
+	}
+
+	tipsBytes, err := csss.store.serializeTips(csss.tipsStaging)
+	if err != nil {
+		return err
+	}
+	err = dbTx.Put(tipsKey, tipsBytes)
+	if err != nil {
+		return err
+	}
+	csss.store.tipsCache = csss.tipsStaging
+
+	return nil
+}

domain/consensus/datastructures/consensusstatestore/utxo.go

@@ -19,12 +19,14 @@ func utxoKey(outpoint *externalapi.DomainOutpoint) (model.DBKey, error) {
 	return utxoSetBucket.Key(serializedOutpoint), nil
 }
 
-func (css *consensusStateStore) StageVirtualUTXODiff(virtualUTXODiff externalapi.UTXODiff) {
-	css.virtualUTXODiffStaging = virtualUTXODiff
+func (css *consensusStateStore) StageVirtualUTXODiff(stagingArea *model.StagingArea, virtualUTXODiff externalapi.UTXODiff) {
+	stagingShard := css.stagingShard(stagingArea)
+
+	stagingShard.virtualUTXODiffStaging = virtualUTXODiff
 }
 
-func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction) error {
-	hadStartedImportingPruningPointUTXOSet, err := css.HadStartedImportingPruningPointUTXOSet(dbTx)
+func (csss *consensusStateStagingShard) commitVirtualUTXODiff(dbTx model.DBTransaction) error {
+	hadStartedImportingPruningPointUTXOSet, err := csss.store.HadStartedImportingPruningPointUTXOSet(dbTx)
 	if err != nil {
 		return err
 	}
@@ -32,11 +34,11 @@ func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction)
 		return errors.New("cannot commit virtual UTXO diff after starting to import the pruning point UTXO set")
 	}
 
-	if css.virtualUTXODiffStaging == nil {
+	if csss.virtualUTXODiffStaging == nil {
 		return nil
 	}
 
-	toRemoveIterator := css.virtualUTXODiffStaging.ToRemove().Iterator()
+	toRemoveIterator := csss.virtualUTXODiffStaging.ToRemove().Iterator()
 	defer toRemoveIterator.Close()
 	for ok := toRemoveIterator.First(); ok; ok = toRemoveIterator.Next() {
 		toRemoveOutpoint, _, err := toRemoveIterator.Get()
@@ -44,7 +46,7 @@ func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction)
 			return err
 		}
 
-		css.virtualUTXOSetCache.Remove(toRemoveOutpoint)
+		csss.store.virtualUTXOSetCache.Remove(toRemoveOutpoint)
 
 		dbKey, err := utxoKey(toRemoveOutpoint)
 		if err != nil {
@@ -56,7 +58,7 @@ func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction)
 		}
 	}
 
-	toAddIterator := css.virtualUTXODiffStaging.ToAdd().Iterator()
+	toAddIterator := csss.virtualUTXODiffStaging.ToAdd().Iterator()
 	defer toAddIterator.Close()
 	for ok := toAddIterator.First(); ok; ok = toAddIterator.Next() {
 		toAddOutpoint, toAddEntry, err := toAddIterator.Get()
@@ -64,7 +66,7 @@ func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction)
 			return err
 		}
 
-		css.virtualUTXOSetCache.Add(toAddOutpoint, toAddEntry)
+		csss.store.virtualUTXOSetCache.Add(toAddOutpoint, toAddEntry)
 
 		dbKey, err := utxoKey(toAddOutpoint)
 		if err != nil {
@@ -85,21 +87,22 @@ func (css *consensusStateStore) commitVirtualUTXODiff(dbTx model.DBTransaction)
 	return nil
 }
 
-func (css *consensusStateStore) UTXOByOutpoint(dbContext model.DBReader, outpoint *externalapi.DomainOutpoint) (
-	externalapi.UTXOEntry, error) {
+func (css *consensusStateStore) UTXOByOutpoint(dbContext model.DBReader, stagingArea *model.StagingArea,
+	outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error) {
 
-	return css.utxoByOutpointFromStagedVirtualUTXODiff(dbContext, outpoint)
+	stagingShard := css.stagingShard(stagingArea)
+
+	return css.utxoByOutpointFromStagedVirtualUTXODiff(dbContext, stagingShard, outpoint)
 }
 
 func (css *consensusStateStore) utxoByOutpointFromStagedVirtualUTXODiff(dbContext model.DBReader,
-	outpoint *externalapi.DomainOutpoint) (
-	externalapi.UTXOEntry, error) {
+	stagingShard *consensusStateStagingShard, outpoint *externalapi.DomainOutpoint) (externalapi.UTXOEntry, error) {
 
-	if css.virtualUTXODiffStaging != nil {
-		if css.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
+	if stagingShard.virtualUTXODiffStaging != nil {
+		if stagingShard.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
 			return nil, errors.Errorf("outpoint was not found")
 		}
-		if utxoEntry, ok := css.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
+		if utxoEntry, ok := stagingShard.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
 			return utxoEntry, nil
 		}
 	}
@@ -127,18 +130,22 @@ func (css *consensusStateStore) utxoByOutpointFromStagedVirtualUTXODiff(dbContex
 	return entry, nil
 }
 
-func (css *consensusStateStore) HasUTXOByOutpoint(dbContext model.DBReader, outpoint *externalapi.DomainOutpoint) (bool, error) {
-	return css.hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext, outpoint)
+func (css *consensusStateStore) HasUTXOByOutpoint(dbContext model.DBReader, stagingArea *model.StagingArea,
+	outpoint *externalapi.DomainOutpoint) (bool, error) {
+
+	stagingShard := css.stagingShard(stagingArea)
+
+	return css.hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext, stagingShard, outpoint)
 }
 
 func (css *consensusStateStore) hasUTXOByOutpointFromStagedVirtualUTXODiff(dbContext model.DBReader,
-	outpoint *externalapi.DomainOutpoint) (bool, error) {
+	stagingShard *consensusStateStagingShard, outpoint *externalapi.DomainOutpoint) (bool, error) {
 
-	if css.virtualUTXODiffStaging != nil {
-		if css.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
+	if stagingShard.virtualUTXODiffStaging != nil {
+		if stagingShard.virtualUTXODiffStaging.ToRemove().Contains(outpoint) {
 			return false, nil
 		}
-		if _, ok := css.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
+		if _, ok := stagingShard.virtualUTXODiffStaging.ToAdd().Get(outpoint); ok {
 			return true, nil
 		}
 	}
@@ -151,8 +158,8 @@ func (css *consensusStateStore) hasUTXOByOutpointFromStagedVirtualUTXODiff(dbCon
 	return dbContext.Has(key)
 }
 
-func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader,
-	fromOutpoint *externalapi.DomainOutpoint, limit int) ([]*externalapi.OutpointAndUTXOEntryPair, error) {
+func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader, fromOutpoint *externalapi.DomainOutpoint, limit int) (
+	[]*externalapi.OutpointAndUTXOEntryPair, error) {
 
 	cursor, err := dbContext.Cursor(utxoSetBucket)
 	if err != nil {
@@ -189,15 +196,19 @@ func (css *consensusStateStore) VirtualUTXOs(dbContext model.DBReader,
 	return outpointAndUTXOEntryPairs, nil
 }
 
-func (css *consensusStateStore) VirtualUTXOSetIterator(dbContext model.DBReader) (externalapi.ReadOnlyUTXOSetIterator, error) {
+func (css *consensusStateStore) VirtualUTXOSetIterator(dbContext model.DBReader, stagingArea *model.StagingArea) (
+	externalapi.ReadOnlyUTXOSetIterator, error) {
+
+	stagingShard := css.stagingShard(stagingArea)
+
 	cursor, err := dbContext.Cursor(utxoSetBucket)
 	if err != nil {
 		return nil, err
 	}
 
 	mainIterator := newCursorUTXOSetIterator(cursor)
-	if css.virtualUTXODiffStaging != nil {
-		return utxo.IteratorWithDiff(mainIterator, css.virtualUTXODiffStaging)
+	if stagingShard.virtualUTXODiffStaging != nil {
+		return utxo.IteratorWithDiff(mainIterator, stagingShard.virtualUTXODiffStaging)
 	}
 
 	return mainIterator, nil

domain/consensus/datastructures/consensusstatestore/virtual_utxo_set.go

@@ -24,10 +24,6 @@ func (css *consensusStateStore) FinishImportingPruningPointUTXOSet(dbContext mod
 func (css *consensusStateStore) ImportPruningPointUTXOSetIntoVirtualUTXOSet(dbContext model.DBWriter,
 	pruningPointUTXOSetIterator externalapi.ReadOnlyUTXOSetIterator) error {
 
-	if css.virtualUTXODiffStaging != nil {
-		return errors.New("cannot import virtual UTXO set while virtual UTXO diff is staged")
-	}
-
 	hadStartedImportingPruningPointUTXOSet, err := css.HadStartedImportingPruningPointUTXOSet(dbContext)
 	if err != nil {
 		return err

domain/consensus/datastructures/daablocksstore/daa_blocks_staging_shard.go

@@ -0,0 +1,72 @@
+package daablocksstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type daaBlocksStagingShard struct {
+	store                  *daaBlocksStore
+	daaScoreToAdd          map[externalapi.DomainHash]uint64
+	daaAddedBlocksToAdd    map[externalapi.DomainHash][]*externalapi.DomainHash
+	daaScoreToDelete       map[externalapi.DomainHash]struct{}
+	daaAddedBlocksToDelete map[externalapi.DomainHash]struct{}
+}
+
+func (daas *daaBlocksStore) stagingShard(stagingArea *model.StagingArea) *daaBlocksStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDDAABlocks, func() model.StagingShard {
+		return &daaBlocksStagingShard{
+			store:                  daas,
+			daaScoreToAdd:          make(map[externalapi.DomainHash]uint64),
+			daaAddedBlocksToAdd:    make(map[externalapi.DomainHash][]*externalapi.DomainHash),
+			daaScoreToDelete:       make(map[externalapi.DomainHash]struct{}),
+			daaAddedBlocksToDelete: make(map[externalapi.DomainHash]struct{}),
+		}
+	}).(*daaBlocksStagingShard)
+}
+
+func (daass *daaBlocksStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, daaScore := range daass.daaScoreToAdd {
+		daaScoreBytes := binaryserialization.SerializeUint64(daaScore)
+		err := dbTx.Put(daass.store.daaScoreHashAsKey(&hash), daaScoreBytes)
+		if err != nil {
+			return err
+		}
+		daass.store.daaScoreLRUCache.Add(&hash, daaScore)
+	}
+
+	for hash, addedBlocks := range daass.daaAddedBlocksToAdd {
+		addedBlocksBytes := binaryserialization.SerializeHashes(addedBlocks)
+		err := dbTx.Put(daass.store.daaAddedBlocksHashAsKey(&hash), addedBlocksBytes)
+		if err != nil {
+			return err
+		}
+		daass.store.daaAddedBlocksLRUCache.Add(&hash, addedBlocks)
+	}
+
+	for hash := range daass.daaScoreToDelete {
+		err := dbTx.Delete(daass.store.daaScoreHashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		daass.store.daaScoreLRUCache.Remove(&hash)
+	}
+
+	for hash := range daass.daaAddedBlocksToDelete {
+		err := dbTx.Delete(daass.store.daaAddedBlocksHashAsKey(&hash))
+		if err != nil {
+			return err
+		}
+		daass.store.daaAddedBlocksLRUCache.Remove(&hash)
+	}
+
+	return nil
+}
+
+func (daass *daaBlocksStagingShard) isStaged() bool {
+	return len(daass.daaScoreToAdd) != 0 ||
+		len(daass.daaAddedBlocksToAdd) != 0 ||
+		len(daass.daaScoreToDelete) != 0 ||
+		len(daass.daaAddedBlocksToDelete) != 0
+}

domain/consensus/datastructures/daablocksstore/daa_blocks_store.go

@@ -0,0 +1,114 @@
+package daablocksstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/database"
+	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/lrucache"
+)
+
+var daaScoreBucket = database.MakeBucket([]byte("daa-score"))
+var daaAddedBlocksBucket = database.MakeBucket([]byte("daa-added-blocks"))
+
+// daaBlocksStore represents a store of DAABlocksStore
+type daaBlocksStore struct {
+	daaScoreLRUCache       *lrucache.LRUCache
+	daaAddedBlocksLRUCache *lrucache.LRUCache
+}
+
+// New instantiates a new DAABlocksStore
+func New(daaScoreCacheSize int, daaAddedBlocksCacheSize int, preallocate bool) model.DAABlocksStore {
+	return &daaBlocksStore{
+		daaScoreLRUCache:       lrucache.New(daaScoreCacheSize, preallocate),
+		daaAddedBlocksLRUCache: lrucache.New(daaAddedBlocksCacheSize, preallocate),
+	}
+}
+
+func (daas *daaBlocksStore) StageDAAScore(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, daaScore uint64) {
+	stagingShard := daas.stagingShard(stagingArea)
+
+	stagingShard.daaScoreToAdd[*blockHash] = daaScore
+}
+
+func (daas *daaBlocksStore) StageBlockDAAAddedBlocks(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, addedBlocks []*externalapi.DomainHash) {
+	stagingShard := daas.stagingShard(stagingArea)
+
+	stagingShard.daaAddedBlocksToAdd[*blockHash] = externalapi.CloneHashes(addedBlocks)
+}
+
+func (daas *daaBlocksStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return daas.stagingShard(stagingArea).isStaged()
+}
+
+func (daas *daaBlocksStore) DAAScore(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (uint64, error) {
+	stagingShard := daas.stagingShard(stagingArea)
+
+	if daaScore, ok := stagingShard.daaScoreToAdd[*blockHash]; ok {
+		return daaScore, nil
+	}
+
+	if daaScore, ok := daas.daaScoreLRUCache.Get(blockHash); ok {
+		return daaScore.(uint64), nil
+	}
+
+	daaScoreBytes, err := dbContext.Get(daas.daaScoreHashAsKey(blockHash))
+	if err != nil {
+		return 0, err
+	}
+
+	daaScore, err := binaryserialization.DeserializeUint64(daaScoreBytes)
+	if err != nil {
+		return 0, err
+	}
+	daas.daaScoreLRUCache.Add(blockHash, daaScore)
+	return daaScore, nil
+}
+
+func (daas *daaBlocksStore) DAAAddedBlocks(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) ([]*externalapi.DomainHash, error) {
+	stagingShard := daas.stagingShard(stagingArea)
+
+	if addedBlocks, ok := stagingShard.daaAddedBlocksToAdd[*blockHash]; ok {
+		return externalapi.CloneHashes(addedBlocks), nil
+	}
+
+	if addedBlocks, ok := daas.daaAddedBlocksLRUCache.Get(blockHash); ok {
+		return externalapi.CloneHashes(addedBlocks.([]*externalapi.DomainHash)), nil
+	}
+
+	addedBlocksBytes, err := dbContext.Get(daas.daaAddedBlocksHashAsKey(blockHash))
+	if err != nil {
+		return nil, err
+	}
+
+	addedBlocks, err := binaryserialization.DeserializeHashes(addedBlocksBytes)
+	if err != nil {
+		return nil, err
+	}
+	daas.daaAddedBlocksLRUCache.Add(blockHash, addedBlocks)
+	return externalapi.CloneHashes(addedBlocks), nil
+}
+
+func (daas *daaBlocksStore) daaScoreHashAsKey(hash *externalapi.DomainHash) model.DBKey {
+	return daaScoreBucket.Key(hash.ByteSlice())
+}
+
+func (daas *daaBlocksStore) daaAddedBlocksHashAsKey(hash *externalapi.DomainHash) model.DBKey {
+	return daaAddedBlocksBucket.Key(hash.ByteSlice())
+}
+
+func (daas *daaBlocksStore) Delete(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) {
+	stagingShard := daas.stagingShard(stagingArea)
+
+	if _, ok := stagingShard.daaScoreToAdd[*blockHash]; ok {
+		delete(stagingShard.daaScoreToAdd, *blockHash)
+	} else {
+		stagingShard.daaAddedBlocksToDelete[*blockHash] = struct{}{}
+	}
+
+	if _, ok := stagingShard.daaAddedBlocksToAdd[*blockHash]; ok {
+		delete(stagingShard.daaAddedBlocksToAdd, *blockHash)
+	} else {
+		stagingShard.daaAddedBlocksToDelete[*blockHash] = struct{}{}
+	}
+}

domain/consensus/datastructures/finalitystore/finality_staging_shard.go

@@ -0,0 +1,36 @@
+package finalitystore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type finalityStagingShard struct {
+	store *finalityStore
+	toAdd map[externalapi.DomainHash]*externalapi.DomainHash
+}
+
+func (fs *finalityStore) stagingShard(stagingArea *model.StagingArea) *finalityStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDFinality, func() model.StagingShard {
+		return &finalityStagingShard{
+			store: fs,
+			toAdd: make(map[externalapi.DomainHash]*externalapi.DomainHash),
+		}
+	}).(*finalityStagingShard)
+}
+
+func (fss *finalityStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, finalityPointHash := range fss.toAdd {
+		err := dbTx.Put(fss.store.hashAsKey(&hash), finalityPointHash.ByteSlice())
+		if err != nil {
+			return err
+		}
+		fss.store.cache.Add(&hash, finalityPointHash)
+	}
+
+	return nil
+}
+
+func (fss *finalityStagingShard) isStaged() bool {
+	return len(fss.toAdd) == 0
+}

domain/consensus/datastructures/finalitystore/finality_store.go

@@ -10,27 +10,26 @@ import (
 var bucket = database.MakeBucket([]byte("finality-points"))
 
 type finalityStore struct {
-	staging  map[externalapi.DomainHash]*externalapi.DomainHash
-	toDelete map[externalapi.DomainHash]struct{}
-	cache    *lrucache.LRUCache
+	cache *lrucache.LRUCache
 }
 
 // New instantiates a new FinalityStore
 func New(cacheSize int, preallocate bool) model.FinalityStore {
 	return &finalityStore{
-		staging:  make(map[externalapi.DomainHash]*externalapi.DomainHash),
-		toDelete: make(map[externalapi.DomainHash]struct{}),
-		cache:    lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 }
 
-func (fs *finalityStore) StageFinalityPoint(blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash) {
-	fs.staging[*blockHash] = finalityPointHash
+func (fs *finalityStore) StageFinalityPoint(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, finalityPointHash *externalapi.DomainHash) {
+	stagingShard := fs.stagingShard(stagingArea)
+
+	stagingShard.toAdd[*blockHash] = finalityPointHash
 }
 
-func (fs *finalityStore) FinalityPoint(
-	dbContext model.DBReader, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
-	if finalityPointHash, ok := fs.staging[*blockHash]; ok {
+func (fs *finalityStore) FinalityPoint(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*externalapi.DomainHash, error) {
+	stagingShard := fs.stagingShard(stagingArea)
+
+	if finalityPointHash, ok := stagingShard.toAdd[*blockHash]; ok {
 		return finalityPointHash, nil
 	}
 
@@ -51,25 +50,8 @@ func (fs *finalityStore) FinalityPoint(
 	return finalityPointHash, nil
 }
 
-func (fs *finalityStore) Discard() {
-	fs.staging = make(map[externalapi.DomainHash]*externalapi.DomainHash)
-}
-
-func (fs *finalityStore) Commit(dbTx model.DBTransaction) error {
-	for hash, finalityPointHash := range fs.staging {
-		err := dbTx.Put(fs.hashAsKey(&hash), finalityPointHash.ByteSlice())
-		if err != nil {
-			return err
-		}
-		fs.cache.Add(&hash, finalityPointHash)
-	}
-
-	fs.Discard()
-	return nil
-}
-
-func (fs *finalityStore) IsStaged() bool {
-	return len(fs.staging) == 0
+func (fs *finalityStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return fs.stagingShard(stagingArea).isStaged()
 }
 
 func (fs *finalityStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {

domain/consensus/datastructures/ghostdagdatastore/ghostadag_data_staging_shard.go

@@ -0,0 +1,40 @@
+package ghostdagdatastore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type ghostdagDataStagingShard struct {
+	store *ghostdagDataStore
+	toAdd map[externalapi.DomainHash]*model.BlockGHOSTDAGData
+}
+
+func (gds *ghostdagDataStore) stagingShard(stagingArea *model.StagingArea) *ghostdagDataStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDGHOSTDAG, func() model.StagingShard {
+		return &ghostdagDataStagingShard{
+			store: gds,
+			toAdd: make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData),
+		}
+	}).(*ghostdagDataStagingShard)
+}
+
+func (gdss *ghostdagDataStagingShard) Commit(dbTx model.DBTransaction) error {
+	for hash, blockGHOSTDAGData := range gdss.toAdd {
+		blockGhostdagDataBytes, err := gdss.store.serializeBlockGHOSTDAGData(blockGHOSTDAGData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(gdss.store.hashAsKey(&hash), blockGhostdagDataBytes)
+		if err != nil {
+			return err
+		}
+		gdss.store.cache.Add(&hash, blockGHOSTDAGData)
+	}
+
+	return nil
+}
+
+func (gdss *ghostdagDataStagingShard) isStaged() bool {
+	return len(gdss.toAdd) != 0
+}

domain/consensus/datastructures/ghostdagdatastore/ghostdag_data_store.go

@@ -13,51 +13,32 @@ var bucket = database.MakeBucket([]byte("block-ghostdag-data"))
 
 // ghostdagDataStore represents a store of BlockGHOSTDAGData
 type ghostdagDataStore struct {
-	staging map[externalapi.DomainHash]*model.BlockGHOSTDAGData
-	cache   *lrucache.LRUCache
+	cache *lrucache.LRUCache
 }
 
 // New instantiates a new GHOSTDAGDataStore
 func New(cacheSize int, preallocate bool) model.GHOSTDAGDataStore {
 	return &ghostdagDataStore{
-		staging: make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData),
-		cache:   lrucache.New(cacheSize, preallocate),
+		cache: lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given blockGHOSTDAGData for the given blockHash
-func (gds *ghostdagDataStore) Stage(blockHash *externalapi.DomainHash, blockGHOSTDAGData *model.BlockGHOSTDAGData) {
-	gds.staging[*blockHash] = blockGHOSTDAGData
+func (gds *ghostdagDataStore) Stage(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash, blockGHOSTDAGData *model.BlockGHOSTDAGData) {
+	stagingShard := gds.stagingShard(stagingArea)
+
+	stagingShard.toAdd[*blockHash] = blockGHOSTDAGData
 }
 
-func (gds *ghostdagDataStore) IsStaged() bool {
-	return len(gds.staging) != 0
-}
-
-func (gds *ghostdagDataStore) Discard() {
-	gds.staging = make(map[externalapi.DomainHash]*model.BlockGHOSTDAGData)
-}
-
-func (gds *ghostdagDataStore) Commit(dbTx model.DBTransaction) error {
-	for hash, blockGHOSTDAGData := range gds.staging {
-		blockGhostdagDataBytes, err := gds.serializeBlockGHOSTDAGData(blockGHOSTDAGData)
-		if err != nil {
-			return err
-		}
-		err = dbTx.Put(gds.hashAsKey(&hash), blockGhostdagDataBytes)
-		if err != nil {
-			return err
-		}
-		gds.cache.Add(&hash, blockGHOSTDAGData)
-	}
-
-	gds.Discard()
-	return nil
+func (gds *ghostdagDataStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return gds.stagingShard(stagingArea).isStaged()
 }
 
 // Get gets the blockGHOSTDAGData associated with the given blockHash
-func (gds *ghostdagDataStore) Get(dbContext model.DBReader, blockHash *externalapi.DomainHash) (*model.BlockGHOSTDAGData, error) {
-	if blockGHOSTDAGData, ok := gds.staging[*blockHash]; ok {
+func (gds *ghostdagDataStore) Get(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (*model.BlockGHOSTDAGData, error) {
+	stagingShard := gds.stagingShard(stagingArea)
+
+	if blockGHOSTDAGData, ok := stagingShard.toAdd[*blockHash]; ok {
 		return blockGHOSTDAGData, nil
 	}
 

domain/consensus/datastructures/headersselectedchainstore/headers_selected_chain_staging_shard.go

@@ -0,0 +1,87 @@
+package headersselectedchainstore
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+type headersSelectedChainStagingShard struct {
+	store          *headersSelectedChainStore
+	addedByHash    map[externalapi.DomainHash]uint64
+	removedByHash  map[externalapi.DomainHash]struct{}
+	addedByIndex   map[uint64]*externalapi.DomainHash
+	removedByIndex map[uint64]struct{}
+}
+
+func (hscs *headersSelectedChainStore) stagingShard(stagingArea *model.StagingArea) *headersSelectedChainStagingShard {
+	return stagingArea.GetOrCreateShard(model.StagingShardIDHeadersSelectedChain, func() model.StagingShard {
+		return &headersSelectedChainStagingShard{
+			store:          hscs,
+			addedByHash:    make(map[externalapi.DomainHash]uint64),
+			removedByHash:  make(map[externalapi.DomainHash]struct{}),
+			addedByIndex:   make(map[uint64]*externalapi.DomainHash),
+			removedByIndex: make(map[uint64]struct{}),
+		}
+	}).(*headersSelectedChainStagingShard)
+}
+
+func (hscss *headersSelectedChainStagingShard) Commit(dbTx model.DBTransaction) error {
+	if !hscss.isStaged() {
+		return nil
+	}
+
+	for hash := range hscss.removedByHash {
+		hashCopy := hash
+		err := dbTx.Delete(hscss.store.hashAsKey(&hashCopy))
+		if err != nil {
+			return err
+		}
+		hscss.store.cacheByHash.Remove(&hashCopy)
+	}
+
+	for index := range hscss.removedByIndex {
+		err := dbTx.Delete(hscss.store.indexAsKey(index))
+		if err != nil {
+			return err
+		}
+		hscss.store.cacheByIndex.Remove(index)
+	}
+
+	highestIndex := uint64(0)
+	for hash, index := range hscss.addedByHash {
+		hashCopy := hash
+		err := dbTx.Put(hscss.store.hashAsKey(&hashCopy), hscss.store.serializeIndex(index))
+		if err != nil {
+			return err
+		}
+
+		err = dbTx.Put(hscss.store.indexAsKey(index), binaryserialization.SerializeHash(&hashCopy))
+		if err != nil {
+			return err
+		}
+
+		hscss.store.cacheByHash.Add(&hashCopy, index)
+		hscss.store.cacheByIndex.Add(index, &hashCopy)
+
+		if index > highestIndex {
+			highestIndex = index
+		}
+	}
+
+	err := dbTx.Put(highestChainBlockIndexKey, hscss.store.serializeIndex(highestIndex))
+	if err != nil {
+		return err
+	}
+
+	hscss.store.cacheHighestChainBlockIndex = highestIndex
+
+	return nil
+}
+
+func (hscss *headersSelectedChainStagingShard) isStaged() bool {
+	return len(hscss.addedByHash) != 0 ||
+		len(hscss.removedByHash) != 0 ||
+		len(hscss.addedByIndex) != 0 ||
+		len(hscss.addedByIndex) != 0
+}

domain/consensus/datastructures/headersselectedchainstore/headers_selected_chain_store.go

@@ -2,6 +2,7 @@ package headersselectedchainstore
 
 import (
 	"encoding/binary"
+
 	"github.com/kaspanet/kaspad/domain/consensus/database"
 	"github.com/kaspanet/kaspad/domain/consensus/database/binaryserialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
@@ -16,10 +17,6 @@ var bucketChainBlockIndexByHash = database.MakeBucket([]byte("chain-block-index-
 var highestChainBlockIndexKey = database.MakeBucket(nil).Key([]byte("highest-chain-block-index"))
 
 type headersSelectedChainStore struct {
-	stagingAddedByHash          map[externalapi.DomainHash]uint64
-	stagingRemovedByHash        map[externalapi.DomainHash]struct{}
-	stagingAddedByIndex         map[uint64]*externalapi.DomainHash
-	stagingRemovedByIndex       map[uint64]struct{}
 	cacheByIndex                *lrucacheuint64tohash.LRUCache
 	cacheByHash                 *lrucache.LRUCache
 	cacheHighestChainBlockIndex uint64
@@ -28,31 +25,27 @@ type headersSelectedChainStore struct {
 // New instantiates a new HeadersSelectedChainStore
 func New(cacheSize int, preallocate bool) model.HeadersSelectedChainStore {
 	return &headersSelectedChainStore{
-		stagingAddedByHash:    make(map[externalapi.DomainHash]uint64),
-		stagingRemovedByHash:  make(map[externalapi.DomainHash]struct{}),
-		stagingAddedByIndex:   make(map[uint64]*externalapi.DomainHash),
-		stagingRemovedByIndex: make(map[uint64]struct{}),
-		cacheByIndex:          lrucacheuint64tohash.New(cacheSize, preallocate),
-		cacheByHash:           lrucache.New(cacheSize, preallocate),
+		cacheByIndex: lrucacheuint64tohash.New(cacheSize, preallocate),
+		cacheByHash:  lrucache.New(cacheSize, preallocate),
 	}
 }
 
 // Stage stages the given chain changes
-func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader,
-	chainChanges *externalapi.SelectedChainPath) error {
+func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader, stagingArea *model.StagingArea, chainChanges *externalapi.SelectedChainPath) error {
+	stagingShard := hscs.stagingShard(stagingArea)
 
-	if hscs.IsStaged() {
+	if hscs.IsStaged(stagingArea) {
 		return errors.Errorf("can't stage when there's already staged data")
 	}
 
 	for _, blockHash := range chainChanges.Removed {
-		index, err := hscs.GetIndexByHash(dbContext, blockHash)
+		index, err := hscs.GetIndexByHash(dbContext, stagingArea, blockHash)
 		if err != nil {
 			return err
 		}
 
-		hscs.stagingRemovedByIndex[index] = struct{}{}
-		hscs.stagingRemovedByHash[*blockHash] = struct{}{}
+		stagingShard.removedByIndex[index] = struct{}{}
+		stagingShard.removedByHash[*blockHash] = struct{}{}
 	}
 
 	currentIndex := uint64(0)
@@ -66,89 +59,27 @@ func (hscs *headersSelectedChainStore) Stage(dbContext model.DBReader,
 	}
 
 	for _, blockHash := range chainChanges.Added {
-		hscs.stagingAddedByIndex[currentIndex] = blockHash
-		hscs.stagingAddedByHash[*blockHash] = currentIndex
+		stagingShard.addedByIndex[currentIndex] = blockHash
+		stagingShard.addedByHash[*blockHash] = currentIndex
 		currentIndex++
 	}
 
 	return nil
 }
 
-func (hscs *headersSelectedChainStore) IsStaged() bool {
-	return len(hscs.stagingAddedByHash) != 0 ||
-		len(hscs.stagingRemovedByHash) != 0 ||
-		len(hscs.stagingAddedByIndex) != 0 ||
-		len(hscs.stagingAddedByIndex) != 0
-}
-
-func (hscs *headersSelectedChainStore) Discard() {
-	hscs.stagingAddedByHash = make(map[externalapi.DomainHash]uint64)
-	hscs.stagingRemovedByHash = make(map[externalapi.DomainHash]struct{})
-	hscs.stagingAddedByIndex = make(map[uint64]*externalapi.DomainHash)
-	hscs.stagingRemovedByIndex = make(map[uint64]struct{})
-}
-
-func (hscs *headersSelectedChainStore) Commit(dbTx model.DBTransaction) error {
-	if !hscs.IsStaged() {
-		return nil
-	}
-
-	for hash := range hscs.stagingRemovedByHash {
-		hashCopy := hash
-		err := dbTx.Delete(hscs.hashAsKey(&hashCopy))
-		if err != nil {
-			return err
-		}
-		hscs.cacheByHash.Remove(&hashCopy)
-	}
-
-	for index := range hscs.stagingRemovedByIndex {
-		err := dbTx.Delete(hscs.indexAsKey(index))
-		if err != nil {
-			return err
-		}
-		hscs.cacheByIndex.Remove(index)
-	}
-
-	highestIndex := uint64(0)
-	for hash, index := range hscs.stagingAddedByHash {
-		hashCopy := hash
-		err := dbTx.Put(hscs.hashAsKey(&hashCopy), hscs.serializeIndex(index))
-		if err != nil {
-			return err
-		}
-
-		err = dbTx.Put(hscs.indexAsKey(index), binaryserialization.SerializeHash(&hashCopy))
-		if err != nil {
-			return err
-		}
-
-		hscs.cacheByHash.Add(&hashCopy, index)
-		hscs.cacheByIndex.Add(index, &hashCopy)
-
-		if index > highestIndex {
-			highestIndex = index
-		}
-	}
-
-	err := dbTx.Put(highestChainBlockIndexKey, hscs.serializeIndex(highestIndex))
-	if err != nil {
-		return err
-	}
-
-	hscs.cacheHighestChainBlockIndex = highestIndex
-
-	hscs.Discard()
-	return nil
+func (hscs *headersSelectedChainStore) IsStaged(stagingArea *model.StagingArea) bool {
+	return hscs.stagingShard(stagingArea).isStaged()
 }
 
 // Get gets the chain block index for the given blockHash
-func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader, blockHash *externalapi.DomainHash) (uint64, error) {
-	if index, ok := hscs.stagingAddedByHash[*blockHash]; ok {
+func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader, stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) (uint64, error) {
+	stagingShard := hscs.stagingShard(stagingArea)
+
+	if index, ok := stagingShard.addedByHash[*blockHash]; ok {
 		return index, nil
 	}
 
-	if _, ok := hscs.stagingRemovedByHash[*blockHash]; ok {
+	if _, ok := stagingShard.removedByHash[*blockHash]; ok {
 		return 0, errors.Wrapf(database.ErrNotFound, "couldn't find block %s", blockHash)
 	}
 
@@ -161,17 +92,23 @@ func (hscs *headersSelectedChainStore) GetIndexByHash(dbContext model.DBReader,
 		return 0, err
 	}
 
-	index := hscs.deserializeIndex(indexBytes)
+	index, err := hscs.deserializeIndex(indexBytes)
+	if err != nil {
+		return 0, err
+	}
+
 	hscs.cacheByHash.Add(blockHash, index)
 	return index, nil
 }
 
-func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader, index uint64) (*externalapi.DomainHash, error) {
-	if blockHash, ok := hscs.stagingAddedByIndex[index]; ok {
+func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader, stagingArea *model.StagingArea, index uint64) (*externalapi.DomainHash, error) {
+	stagingShard := hscs.stagingShard(stagingArea)
+
+	if blockHash, ok := stagingShard.addedByIndex[index]; ok {
 		return blockHash, nil
 	}
 
-	if _, ok := hscs.stagingRemovedByIndex[index]; ok {
+	if _, ok := stagingShard.removedByIndex[index]; ok {
 		return nil, errors.Wrapf(database.ErrNotFound, "couldn't find chain block with index %d", index)
 	}
 
@@ -193,11 +130,11 @@ func (hscs *headersSelectedChainStore) GetHashByIndex(dbContext model.DBReader,
 }
 
 func (hscs *headersSelectedChainStore) serializeIndex(index uint64) []byte {
-	return binaryserialization.SerializeChainBlockIndex(index)
+	return binaryserialization.SerializeUint64(index)
 }
 
-func (hscs *headersSelectedChainStore) deserializeIndex(indexBytes []byte) uint64 {
-	return binaryserialization.DeserializeChainBlockIndex(indexBytes)
+func (hscs *headersSelectedChainStore) deserializeIndex(indexBytes []byte) (uint64, error) {
+	return binaryserialization.DeserializeUint64(indexBytes)
 }
 
 func (hscs *headersSelectedChainStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
@@ -223,7 +160,11 @@ func (hscs *headersSelectedChainStore) highestChainBlockIndex(dbContext model.DB
 		return 0, false, err
 	}
 
-	index := hscs.deserializeIndex(indexBytes)
+	index, err := hscs.deserializeIndex(indexBytes)
+	if err != nil {
+		return 0, false, err
+	}
+
 	hscs.cacheHighestChainBlockIndex = index
 	return index, true, nil
 }