diff --git a/domain/consensus/database/serialization/acceptancedata.go b/domain/consensus/database/serialization/acceptancedata.go
new file mode 100644
index 000000000..ee41752e7
--- /dev/null
+++ b/domain/consensus/database/serialization/acceptancedata.go
@@ -0,0 +1,56 @@
+package serialization
+
+import "github.com/kaspanet/kaspad/domain/consensus/model"
+
+// DomainAcceptanceDataToDbAcceptanceData converts model.AcceptanceData to DbAcceptanceData
+func DomainAcceptanceDataToDbAcceptanceData(domainAcceptanceData model.AcceptanceData) *DbAcceptanceData {
+	dbBlockAcceptanceData := make([]*DbBlockAcceptanceData, len(domainAcceptanceData))
+	for i, blockAcceptanceData := range domainAcceptanceData {
+		dbTransactionAcceptanceData := make([]*DbTransactionAcceptanceData,
+			len(blockAcceptanceData.TransactionAcceptanceData))
+
+		for j, transactionAcceptanceData := range blockAcceptanceData.TransactionAcceptanceData {
+			dbTransaction := DomainTransactionToDbTransaction(transactionAcceptanceData.Transaction)
+			dbTransactionAcceptanceData[j] = &DbTransactionAcceptanceData{
+				Transaction: dbTransaction,
+				Fee:         transactionAcceptanceData.Fee,
+				IsAccepted:  transactionAcceptanceData.IsAccepted,
+			}
+		}
+
+		dbBlockAcceptanceData[i] = &DbBlockAcceptanceData{
+			TransactionAcceptanceData: dbTransactionAcceptanceData,
+		}
+	}
+
+	return &DbAcceptanceData{
+		BlockAcceptanceData: dbBlockAcceptanceData,
+	}
+}
+
+// DbAcceptanceDataToDomainAcceptanceData converts DbAcceptanceData to model.AcceptanceData
+func DbAcceptanceDataToDomainAcceptanceData(dbAcceptanceData *DbAcceptanceData) (model.AcceptanceData, error) {
+	domainAcceptanceData := make(model.AcceptanceData, len(dbAcceptanceData.BlockAcceptanceData))
+	for i, dbBlockAcceptanceData := range dbAcceptanceData.BlockAcceptanceData {
+		domainTransactionAcceptanceData := make([]*model.TransactionAcceptanceData,
+			len(dbBlockAcceptanceData.TransactionAcceptanceData))
+
+		for j, dbTransactionAcceptanceData := range dbBlockAcceptanceData.TransactionAcceptanceData {
+			domainTransaction, err := DbTransactionToDomainTransaction(dbTransactionAcceptanceData.Transaction)
+			if err != nil {
+				return nil, err
+			}
+			domainTransactionAcceptanceData[j] = &model.TransactionAcceptanceData{
+				Transaction: domainTransaction,
+				Fee:         dbTransactionAcceptanceData.Fee,
+				IsAccepted:  dbTransactionAcceptanceData.IsAccepted,
+			}
+		}
+
+		domainAcceptanceData[i] = &model.BlockAcceptanceData{
+			TransactionAcceptanceData: domainTransactionAcceptanceData,
+		}
+	}
+
+	return domainAcceptanceData, nil
+}
diff --git a/domain/consensus/database/serialization/block.go b/domain/consensus/database/serialization/block.go
new file mode 100644
index 000000000..4247dc8fc
--- /dev/null
+++ b/domain/consensus/database/serialization/block.go
@@ -0,0 +1,40 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// DomainBlockToDbBlock converts DomainBlocks to DbBlock
+func DomainBlockToDbBlock(domainBlock *externalapi.DomainBlock) *DbBlock {
+	dbTransactions := make([]*DbTransaction, len(domainBlock.Transactions))
+	for i, domainTransaction := range domainBlock.Transactions {
+		dbTransactions[i] = DomainTransactionToDbTransaction(domainTransaction)
+	}
+
+	return &DbBlock{
+		Header:       DomainBlockHeaderToDbBlockHeader(domainBlock.Header),
+		Transactions: dbTransactions,
+	}
+}
+
+// DbBlockToDomainBlock converts DbBlock to DomainBlock
+func DbBlockToDomainBlock(dbBlock *DbBlock) (*externalapi.DomainBlock, error) {
+	domainBlockHeader, err := DbBlockHeaderToDomainBlockHeader(dbBlock.Header)
+	if err != nil {
+		return nil, err
+	}
+
+	domainTransactions := make([]*externalapi.DomainTransaction, len(dbBlock.Transactions))
+	for i, dbTransaction := range dbBlock.Transactions {
+		var err error
+		domainTransactions[i], err = DbTransactionToDomainTransaction(dbTransaction)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &externalapi.DomainBlock{
+		Header:       domainBlockHeader,
+		Transactions: domainTransactions,
+	}, nil
+}
diff --git a/domain/consensus/database/serialization/blockheader.go b/domain/consensus/database/serialization/blockheader.go
new file mode 100644
index 000000000..e8981daa7
--- /dev/null
+++ b/domain/consensus/database/serialization/blockheader.go
@@ -0,0 +1,50 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// DomainBlockHeaderToDbBlockHeader converts DomainBlockHeader to DbBlockHeader
+func DomainBlockHeaderToDbBlockHeader(domainBlockHeader *externalapi.DomainBlockHeader) *DbBlockHeader {
+	return &DbBlockHeader{
+		Version:              domainBlockHeader.Version,
+		ParentHashes:         DomainHashesToDbHashes(domainBlockHeader.ParentHashes),
+		HashMerkleRoot:       DomainHashToDbHash(&domainBlockHeader.HashMerkleRoot),
+		AcceptedIDMerkleRoot: DomainHashToDbHash(&domainBlockHeader.AcceptedIDMerkleRoot),
+		UtxoCommitment:       DomainHashToDbHash(&domainBlockHeader.UTXOCommitment),
+		TimeInMilliseconds:   domainBlockHeader.TimeInMilliseconds,
+		Bits:                 domainBlockHeader.Bits,
+		Nonce:                domainBlockHeader.Nonce,
+	}
+}
+
+// DbBlockHeaderToDomainBlockHeader converts DbBlockHeader to DomainBlockHeader
+func DbBlockHeaderToDomainBlockHeader(dbBlockHeader *DbBlockHeader) (*externalapi.DomainBlockHeader, error) {
+	parentHashes, err := DbHashesToDomainHashes(dbBlockHeader.ParentHashes)
+	if err != nil {
+		return nil, err
+	}
+	hashMerkleRoot, err := DbHashToDomainHash(dbBlockHeader.HashMerkleRoot)
+	if err != nil {
+		return nil, err
+	}
+	acceptedIDMerkleRoot, err := DbHashToDomainHash(dbBlockHeader.AcceptedIDMerkleRoot)
+	if err != nil {
+		return nil, err
+	}
+	utxoCommitment, err := DbHashToDomainHash(dbBlockHeader.UtxoCommitment)
+	if err != nil {
+		return nil, err
+	}
+
+	return &externalapi.DomainBlockHeader{
+		Version:              dbBlockHeader.Version,
+		ParentHashes:         parentHashes,
+		HashMerkleRoot:       *hashMerkleRoot,
+		AcceptedIDMerkleRoot: *acceptedIDMerkleRoot,
+		UTXOCommitment:       *utxoCommitment,
+		TimeInMilliseconds:   dbBlockHeader.TimeInMilliseconds,
+		Bits:                 dbBlockHeader.Bits,
+		Nonce:                dbBlockHeader.Nonce,
+	}, nil
+}
diff --git a/domain/consensus/database/serialization/blockrelations.go b/domain/consensus/database/serialization/blockrelations.go
new file mode 100644
index 000000000..4a06dcb59
--- /dev/null
+++ b/domain/consensus/database/serialization/blockrelations.go
@@ -0,0 +1,30 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model"
+)
+
+// DomainBlockRelationsToDbBlockRelations converts model.BlockRelations to DbBlockRelations
+func DomainBlockRelationsToDbBlockRelations(domainBlockRelations *model.BlockRelations) *DbBlockRelations {
+	return &DbBlockRelations{
+		Parents:  DomainHashesToDbHashes(domainBlockRelations.Parents),
+		Children: DomainHashesToDbHashes(domainBlockRelations.Children),
+	}
+}
+
+// DbBlockRelationsToDomainBlockRelations converts DbBlockRelations to model.BlockRelations
+func DbBlockRelationsToDomainBlockRelations(dbBlockRelations *DbBlockRelations) (*model.BlockRelations, error) {
+	domainParentHashes, err := DbHashesToDomainHashes(dbBlockRelations.Parents)
+	if err != nil {
+		return nil, err
+	}
+	domainChildHashes, err := DbHashesToDomainHashes(dbBlockRelations.Children)
+	if err != nil {
+		return nil, err
+	}
+
+	return &model.BlockRelations{
+		Parents:  domainParentHashes,
+		Children: domainChildHashes,
+	}, nil
+}
diff --git a/domain/consensus/database/serialization/blockstatus.go b/domain/consensus/database/serialization/blockstatus.go
new file mode 100644
index 000000000..16522380e
--- /dev/null
+++ b/domain/consensus/database/serialization/blockstatus.go
@@ -0,0 +1,15 @@
+package serialization
+
+import "github.com/kaspanet/kaspad/domain/consensus/model"
+
+// DomainBlockStatusToDbBlockStatus converts model.BlockStatus to DbBlockStatus
+func DomainBlockStatusToDbBlockStatus(domainBlockStatus model.BlockStatus) *DbBlockStatus {
+	return &DbBlockStatus{
+		Status: uint32(domainBlockStatus),
+	}
+}
+
+// DbBlockStatusToDomainBlockStatus converts DbBlockStatus to model.BlockStatus
+func DbBlockStatusToDomainBlockStatus(dbBlockStatus *DbBlockStatus) model.BlockStatus {
+	return model.BlockStatus(dbBlockStatus.Status)
+}
diff --git a/domain/consensus/database/serialization/hash.go b/domain/consensus/database/serialization/hash.go
new file mode 100644
index 000000000..f09bc290a
--- /dev/null
+++ b/domain/consensus/database/serialization/hash.go
@@ -0,0 +1,38 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
+)
+
+// DbHashToDomainHash converts a DbHash to a DomainHash
+func DbHashToDomainHash(dbHash *DbHash) (*externalapi.DomainHash, error) {
+	return hashes.FromBytes(dbHash.Hash)
+}
+
+// DomainHashToDbHash converts a DomainHash to a DbHash
+func DomainHashToDbHash(domainHash *externalapi.DomainHash) *DbHash {
+	return &DbHash{Hash: domainHash[:]}
+}
+
+// DomainHashesToDbHashes converts a slice of DomainHash to a slice of DbHash
+func DomainHashesToDbHashes(domainHashes []*externalapi.DomainHash) []*DbHash {
+	dbHashes := make([]*DbHash, len(domainHashes))
+	for i, domainHash := range domainHashes {
+		dbHashes[i] = DomainHashToDbHash(domainHash)
+	}
+	return dbHashes
+}
+
+// DbHashesToDomainHashes converts a slice of DbHash to a slice of DomainHash
+func DbHashesToDomainHashes(dbHashes []*DbHash) ([]*externalapi.DomainHash, error) {
+	domainHashes := make([]*externalapi.DomainHash, len(dbHashes))
+	for i, domainHash := range dbHashes {
+		var err error
+		domainHashes[i], err = DbHashToDomainHash(domainHash)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return domainHashes, nil
+}
diff --git a/domain/consensus/database/serialization/messages.pb.go b/domain/consensus/database/serialization/messages.pb.go
index e0e1c1b3f..3ba94f913 100644
--- a/domain/consensus/database/serialization/messages.pb.go
+++ b/domain/consensus/database/serialization/messages.pb.go
@@ -242,7 +242,7 @@ type DbTransaction struct {
 	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      *DbHash                `protobuf:"bytes,8,opt,name=payload,proto3" json:"payload,omitempty"`
+	Payload      []byte                 `protobuf:"bytes,8,opt,name=payload,proto3" json:"payload,omitempty"`
 }
 
 func (x *DbTransaction) Reset() {
@@ -326,7 +326,7 @@ func (x *DbTransaction) GetPayloadHash() *DbHash {
 	return nil
 }
 
-func (x *DbTransaction) GetPayload() *DbHash {
+func (x *DbTransaction) GetPayload() []byte {
 	if x != nil {
 		return x.Payload
 	}
@@ -1480,7 +1480,7 @@ var file_messages_proto_rawDesc = []byte{
 	0x0d, 0x52, 0x04, 0x62, 0x69, 0x74, 0x73, 0x12, 0x14, 0x0a, 0x05, 0x6e, 0x6f, 0x6e, 0x63, 0x65,
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+	0x01, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x04, 0x68, 0x61, 0x73, 0x68, 0x22, 0xe6, 0x02, 0x0a, 0x0d,
 	0x44, 0x62, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x18, 0x0a,
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@@ -1501,164 +1501,163 @@ var file_messages_proto_rawDesc = []byte{
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+	0x74, 0x12, 0x10, 0x0a, 0x03, 0x65, 0x6e, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x03,
+	0x65, 0x6e, 0x64, 0x22, 0x88, 0x01, 0x0a, 0x0a, 0x44, 0x62, 0x55, 0x74, 0x78, 0x6f, 0x44, 0x69,
+	0x66, 0x66, 0x12, 0x39, 0x0a, 0x05, 0x74, 0x6f, 0x41, 0x64, 0x64, 0x18, 0x01, 0x20, 0x03, 0x28,
+	0x0b, 0x32, 0x23, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f,
+	0x6e, 0x2e, 0x44, 0x62, 0x55, 0x74, 0x78, 0x6f, 0x43, 0x6f, 0x6c, 0x6c, 0x65, 0x63, 0x74, 0x69,
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+	0x08, 0x74, 0x6f, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65, 0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32,
+	0x23, 0x2e, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e,
+	0x44, 0x62, 0x55, 0x74, 0x78, 0x6f, 0x43, 0x6f, 0x6c, 0x6c, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e,
+	0x49, 0x74, 0x65, 0x6d, 0x52, 0x08, 0x74, 0x6f, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65, 0x42, 0x2a,
+	0x5a, 0x28, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6b, 0x61, 0x73,
+	0x70, 0x61, 0x6e, 0x65, 0x74, 0x2f, 0x6b, 0x61, 0x73, 0x70, 0x61, 0x64, 0x2f, 0x73, 0x65, 0x72,
+	0x69, 0x61, 0x6c, 0x69, 0x7a, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }
 
 var (
@@ -1711,34 +1710,33 @@ var file_messages_proto_depIdxs = []int32{
 	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
-	2,  // 10: serialization.DbTransaction.payload:type_name -> serialization.DbHash
-	5,  // 11: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
-	6,  // 12: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
-	10, // 13: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
-	11, // 14: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
-	3,  // 15: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
-	2,  // 16: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
-	2,  // 17: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
-	2,  // 18: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
-	2,  // 19: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
-	2,  // 20: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
-	15, // 21: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
-	2,  // 22: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
-	18, // 23: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
-	5,  // 24: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
-	19, // 25: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
-	21, // 26: serialization.DbReachabilityData.treeNode:type_name -> serialization.DbReachabilityTreeNode
-	2,  // 27: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
-	2,  // 28: serialization.DbReachabilityTreeNode.children:type_name -> serialization.DbHash
-	2,  // 29: serialization.DbReachabilityTreeNode.parent:type_name -> serialization.DbHash
-	22, // 30: serialization.DbReachabilityTreeNode.interval:type_name -> serialization.DbReachabilityInterval
-	18, // 31: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
-	18, // 32: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
-	33, // [33:33] is the sub-list for method output_type
-	33, // [33:33] is the sub-list for method input_type
-	33, // [33:33] is the sub-list for extension type_name
-	33, // [33:33] is the sub-list for extension extendee
-	0,  // [0:33] is the sub-list for field type_name
+	5,  // 10: serialization.DbTransactionInput.previousOutpoint:type_name -> serialization.DbOutpoint
+	6,  // 11: serialization.DbOutpoint.transactionID:type_name -> serialization.DbTransactionId
+	10, // 12: serialization.DbAcceptanceData.blockAcceptanceData:type_name -> serialization.DbBlockAcceptanceData
+	11, // 13: serialization.DbBlockAcceptanceData.transactionAcceptanceData:type_name -> serialization.DbTransactionAcceptanceData
+	3,  // 14: serialization.DbTransactionAcceptanceData.transaction:type_name -> serialization.DbTransaction
+	2,  // 15: serialization.DbBlockRelations.parents:type_name -> serialization.DbHash
+	2,  // 16: serialization.DbBlockRelations.children:type_name -> serialization.DbHash
+	2,  // 17: serialization.DbBlockGhostdagData.selectedParent:type_name -> serialization.DbHash
+	2,  // 18: serialization.DbBlockGhostdagData.mergeSetBlues:type_name -> serialization.DbHash
+	2,  // 19: serialization.DbBlockGhostdagData.mergeSetReds:type_name -> serialization.DbHash
+	15, // 20: serialization.DbBlockGhostdagData.bluesAnticoneSizes:type_name -> serialization.DbBluesAnticoneSizes
+	2,  // 21: serialization.DbBluesAnticoneSizes.blueHash:type_name -> serialization.DbHash
+	18, // 22: serialization.DbUtxoSet.items:type_name -> serialization.DbUtxoCollectionItem
+	5,  // 23: serialization.DbUtxoCollectionItem.outpoint:type_name -> serialization.DbOutpoint
+	19, // 24: serialization.DbUtxoCollectionItem.utxoEntry:type_name -> serialization.DbUtxoEntry
+	21, // 25: serialization.DbReachabilityData.treeNode:type_name -> serialization.DbReachabilityTreeNode
+	2,  // 26: serialization.DbReachabilityData.futureCoveringSet:type_name -> serialization.DbHash
+	2,  // 27: serialization.DbReachabilityTreeNode.children:type_name -> serialization.DbHash
+	2,  // 28: serialization.DbReachabilityTreeNode.parent:type_name -> serialization.DbHash
+	22, // 29: serialization.DbReachabilityTreeNode.interval:type_name -> serialization.DbReachabilityInterval
+	18, // 30: serialization.DbUtxoDiff.toAdd:type_name -> serialization.DbUtxoCollectionItem
+	18, // 31: serialization.DbUtxoDiff.toRemove:type_name -> serialization.DbUtxoCollectionItem
+	32, // [32:32] is the sub-list for method output_type
+	32, // [32:32] is the sub-list for method input_type
+	32, // [32:32] is the sub-list for extension type_name
+	32, // [32:32] is the sub-list for extension extendee
+	0,  // [0:32] is the sub-list for field type_name
 }
 
 func init() { file_messages_proto_init() }
diff --git a/domain/consensus/database/serialization/messages.proto b/domain/consensus/database/serialization/messages.proto
index edef53493..3fe5091c1 100644
--- a/domain/consensus/database/serialization/messages.proto
+++ b/domain/consensus/database/serialization/messages.proto
@@ -31,7 +31,7 @@ message DbTransaction {
   DbSubnetworkId subnetworkID = 5;
   uint64 gas = 6;
   DbHash payloadHash = 7;
-  DbHash payload = 8;
+  bytes payload = 8;
 }
 
 message DbTransactionInput {
diff --git a/domain/consensus/database/serialization/outpoint.go b/domain/consensus/database/serialization/outpoint.go
new file mode 100644
index 000000000..aa3b5e155
--- /dev/null
+++ b/domain/consensus/database/serialization/outpoint.go
@@ -0,0 +1,26 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// DomainOutpointToDbOutpoint converts DomainOutpoint to DbOutpoint
+func DomainOutpointToDbOutpoint(domainOutpoint *externalapi.DomainOutpoint) *DbOutpoint {
+	return &DbOutpoint{
+		TransactionID: DomainTransactionIDToDbTransactionID(&domainOutpoint.TransactionID),
+		Index:         domainOutpoint.Index,
+	}
+}
+
+// DbOutpointToDomainOutpoint converts DbOutpoint to DomainOutpoint
+func DbOutpointToDomainOutpoint(dbOutpoint *DbOutpoint) (*externalapi.DomainOutpoint, error) {
+	domainTransactionID, err := DbTransactionIDToDomainTransactionID(dbOutpoint.TransactionID)
+	if err != nil {
+		return nil, err
+	}
+
+	return &externalapi.DomainOutpoint{
+		TransactionID: *domainTransactionID,
+		Index:         dbOutpoint.Index,
+	}, nil
+}
diff --git a/domain/consensus/database/serialization/subnetworkid.go b/domain/consensus/database/serialization/subnetworkid.go
new file mode 100644
index 000000000..f1775b3fb
--- /dev/null
+++ b/domain/consensus/database/serialization/subnetworkid.go
@@ -0,0 +1,16 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/subnetworks"
+)
+
+// DbSubnetworkIDToDomainSubnetworkID converts DbSubnetworkId to DomainSubnetworkID
+func DbSubnetworkIDToDomainSubnetworkID(dbSubnetworkID *DbSubnetworkId) (*externalapi.DomainSubnetworkID, error) {
+	return subnetworks.FromBytes(dbSubnetworkID.SubnetworkId)
+}
+
+// DomainSubnetworkIDToDbSubnetworkID converts DomainSubnetworkID to DbSubnetworkId
+func DomainSubnetworkIDToDbSubnetworkID(domainSubnetworkID *externalapi.DomainSubnetworkID) *DbSubnetworkId {
+	return &DbSubnetworkId{SubnetworkId: domainSubnetworkID[:]}
+}
diff --git a/domain/consensus/database/serialization/transaction.go b/domain/consensus/database/serialization/transaction.go
new file mode 100644
index 000000000..60d8a30eb
--- /dev/null
+++ b/domain/consensus/database/serialization/transaction.go
@@ -0,0 +1,80 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+)
+
+// DomainTransactionToDbTransaction converts DomainTransaction to DbTransaction
+func DomainTransactionToDbTransaction(domainTransaction *externalapi.DomainTransaction) *DbTransaction {
+	dbInputs := make([]*DbTransactionInput, len(domainTransaction.Inputs))
+	for i, domainTransactionInput := range domainTransaction.Inputs {
+		dbInputs[i] = &DbTransactionInput{
+			PreviousOutpoint: DomainOutpointToDbOutpoint(&domainTransactionInput.PreviousOutpoint),
+			SignatureScript:  domainTransactionInput.SignatureScript,
+			Sequence:         domainTransactionInput.Sequence,
+		}
+	}
+
+	dbOutputs := make([]*DbTransactionOutput, len(domainTransaction.Outputs))
+	for i, domainTransactionOutput := range domainTransaction.Outputs {
+		dbOutputs[i] = &DbTransactionOutput{
+			Value:           domainTransactionOutput.Value,
+			ScriptPublicKey: domainTransactionOutput.ScriptPublicKey,
+		}
+	}
+
+	return &DbTransaction{
+		Version:      domainTransaction.Version,
+		Inputs:       dbInputs,
+		Outputs:      dbOutputs,
+		LockTime:     domainTransaction.LockTime,
+		SubnetworkID: DomainSubnetworkIDToDbSubnetworkID(&domainTransaction.SubnetworkID),
+		Gas:          domainTransaction.Gas,
+		PayloadHash:  DomainHashToDbHash(&domainTransaction.PayloadHash),
+		Payload:      domainTransaction.Payload,
+	}
+}
+
+// DbTransactionToDomainTransaction converts DbTransaction to DomainTransaction
+func DbTransactionToDomainTransaction(dbTransaction *DbTransaction) (*externalapi.DomainTransaction, error) {
+	domainSubnetworkID, err := DbSubnetworkIDToDomainSubnetworkID(dbTransaction.SubnetworkID)
+	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 {
+		domainPreviousOutpoint, err := DbOutpointToDomainOutpoint(dbTransactionInput.PreviousOutpoint)
+		if err != nil {
+			return nil, err
+		}
+		domainInputs[i] = &externalapi.DomainTransactionInput{
+			PreviousOutpoint: *domainPreviousOutpoint,
+			SignatureScript:  dbTransactionInput.SignatureScript,
+			Sequence:         dbTransactionInput.Sequence,
+		}
+	}
+
+	domainOutputs := make([]*externalapi.DomainTransactionOutput, len(dbTransaction.Outputs))
+	for i, dbTransactionOutput := range dbTransaction.Outputs {
+		domainOutputs[i] = &externalapi.DomainTransactionOutput{
+			Value:           dbTransactionOutput.Value,
+			ScriptPublicKey: dbTransactionOutput.ScriptPublicKey,
+		}
+	}
+
+	return &externalapi.DomainTransaction{
+		Version:      dbTransaction.Version,
+		Inputs:       domainInputs,
+		Outputs:      domainOutputs,
+		LockTime:     dbTransaction.LockTime,
+		SubnetworkID: *domainSubnetworkID,
+		Gas:          dbTransaction.Gas,
+		PayloadHash:  *domainPayloadHash,
+		Payload:      dbTransaction.Payload,
+	}, nil
+}
diff --git a/domain/consensus/database/serialization/transactionid.go b/domain/consensus/database/serialization/transactionid.go
new file mode 100644
index 000000000..dab925b7b
--- /dev/null
+++ b/domain/consensus/database/serialization/transactionid.go
@@ -0,0 +1,16 @@
+package serialization
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/kaspanet/kaspad/domain/consensus/utils/transactionid"
+)
+
+// DbTransactionIDToDomainTransactionID converts DbTransactionId to DomainTransactionID
+func DbTransactionIDToDomainTransactionID(dbTransactionID *DbTransactionId) (*externalapi.DomainTransactionID, error) {
+	return transactionid.FromBytes(dbTransactionID.TransactionId)
+}
+
+// DomainTransactionIDToDbTransactionID converts DomainTransactionID to DbTransactionId
+func DomainTransactionIDToDbTransactionID(domainTransactionID *externalapi.DomainTransactionID) *DbTransactionId {
+	return &DbTransactionId{TransactionId: domainTransactionID[:]}
+}
diff --git a/domain/consensus/datastructures/acceptancedatastore/acceptancedatastore.go b/domain/consensus/datastructures/acceptancedatastore/acceptancedatastore.go
index cedb186af..fc2c4e282 100644
--- a/domain/consensus/datastructures/acceptancedatastore/acceptancedatastore.go
+++ b/domain/consensus/datastructures/acceptancedatastore/acceptancedatastore.go
@@ -1,9 +1,11 @@
 package acceptancedatastore
 
 import (
+	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
+	"google.golang.org/protobuf/proto"
 )
 
 var bucket = dbkeys.MakeBucket([]byte("acceptance-data"))
@@ -35,7 +37,11 @@ func (ads *acceptanceDataStore) Discard() {
 
 func (ads *acceptanceDataStore) Commit(dbTx model.DBTransaction) error {
 	for hash, acceptanceData := range ads.staging {
-		err := dbTx.Put(ads.hashAsKey(&hash), ads.serializeAcceptanceData(acceptanceData))
+		acceptanceDataBytes, err := ads.serializeAcceptanceData(acceptanceData)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(ads.hashAsKey(&hash), acceptanceDataBytes)
 		if err != nil {
 			return err
 		}
@@ -68,12 +74,18 @@ func (ads *acceptanceDataStore) Delete(dbTx model.DBTransaction, blockHash *exte
 	return dbTx.Delete(ads.hashAsKey(blockHash))
 }
 
-func (ads *acceptanceDataStore) serializeAcceptanceData(acceptanceData model.AcceptanceData) []byte {
-	panic("implement me")
+func (ads *acceptanceDataStore) serializeAcceptanceData(acceptanceData model.AcceptanceData) ([]byte, error) {
+	dbAcceptanceData := serialization.DomainAcceptanceDataToDbAcceptanceData(acceptanceData)
+	return proto.Marshal(dbAcceptanceData)
 }
 
 func (ads *acceptanceDataStore) deserializeAcceptanceData(acceptanceDataBytes []byte) (model.AcceptanceData, error) {
-	panic("implement me")
+	dbAcceptanceData := &serialization.DbAcceptanceData{}
+	err := proto.Unmarshal(acceptanceDataBytes, dbAcceptanceData)
+	if err != nil {
+		return nil, err
+	}
+	return serialization.DbAcceptanceDataToDomainAcceptanceData(dbAcceptanceData)
 }
 
 func (ads *acceptanceDataStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
diff --git a/domain/consensus/datastructures/blockheaderstore/blockheaderstore.go b/domain/consensus/datastructures/blockheaderstore/blockheaderstore.go
index 42ffe2b50..0e1892ece 100644
--- a/domain/consensus/datastructures/blockheaderstore/blockheaderstore.go
+++ b/domain/consensus/datastructures/blockheaderstore/blockheaderstore.go
@@ -6,7 +6,6 @@ import (
 	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
-	"github.com/kaspanet/kaspad/domain/consensus/utils/hashes"
 )
 
 var bucket = dbkeys.MakeBucket([]byte("block-headers"))
@@ -107,22 +106,7 @@ func (bms *blockHeaderStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey
 }
 
 func (bms *blockHeaderStore) serializeHeader(header *externalapi.DomainBlockHeader) ([]byte, error) {
-	dbParentHashes := make([]*serialization.DbHash, len(header.ParentHashes))
-	for i, parentHash := range header.ParentHashes {
-		dbParentHashes[i] = &serialization.DbHash{Hash: parentHash[:]}
-	}
-
-	dbBlockHeader := &serialization.DbBlockHeader{
-		Version:              header.Version,
-		ParentHashes:         dbParentHashes,
-		HashMerkleRoot:       &serialization.DbHash{Hash: header.HashMerkleRoot[:]},
-		AcceptedIDMerkleRoot: &serialization.DbHash{Hash: header.AcceptedIDMerkleRoot[:]},
-		UtxoCommitment:       &serialization.DbHash{Hash: header.UTXOCommitment[:]},
-		TimeInMilliseconds:   header.TimeInMilliseconds,
-		Bits:                 header.Bits,
-		Nonce:                header.Nonce,
-	}
-
+	dbBlockHeader := serialization.DomainBlockHeaderToDbBlockHeader(header)
 	return proto.Marshal(dbBlockHeader)
 }
 
@@ -132,35 +116,5 @@ func (bms *blockHeaderStore) deserializeHeader(headerBytes []byte) (*externalapi
 	if err != nil {
 		return nil, err
 	}
-
-	parentHashes := make([]*externalapi.DomainHash, len(dbBlockHeader.ParentHashes))
-	for i, dbParentHash := range dbBlockHeader.ParentHashes {
-		parentHashes[i], err = hashes.FromBytes(dbParentHash.Hash)
-		if err != nil {
-			return nil, err
-		}
-	}
-	hashMerkleRoot, err := hashes.FromBytes(dbBlockHeader.HashMerkleRoot.Hash)
-	if err != nil {
-		return nil, err
-	}
-	acceptedIDMerkleRoot, err := hashes.FromBytes(dbBlockHeader.AcceptedIDMerkleRoot.Hash)
-	if err != nil {
-		return nil, err
-	}
-	utxoCommitment, err := hashes.FromBytes(dbBlockHeader.UtxoCommitment.Hash)
-	if err != nil {
-		return nil, err
-	}
-
-	return &externalapi.DomainBlockHeader{
-		Version:              dbBlockHeader.Version,
-		ParentHashes:         parentHashes,
-		HashMerkleRoot:       *hashMerkleRoot,
-		AcceptedIDMerkleRoot: *acceptedIDMerkleRoot,
-		UTXOCommitment:       *utxoCommitment,
-		TimeInMilliseconds:   dbBlockHeader.TimeInMilliseconds,
-		Bits:                 dbBlockHeader.Bits,
-		Nonce:                dbBlockHeader.Nonce,
-	}, nil
+	return serialization.DbBlockHeaderToDomainBlockHeader(dbBlockHeader)
 }
diff --git a/domain/consensus/datastructures/blockrelationstore/blockrelationstore.go b/domain/consensus/datastructures/blockrelationstore/blockrelationstore.go
index bfd5a5de6..28bfdb901 100644
--- a/domain/consensus/datastructures/blockrelationstore/blockrelationstore.go
+++ b/domain/consensus/datastructures/blockrelationstore/blockrelationstore.go
@@ -1,6 +1,8 @@
 package blockrelationstore
 
 import (
+	"github.com/golang/protobuf/proto"
+	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
@@ -34,7 +36,11 @@ func (brs *blockRelationStore) Discard() {
 
 func (brs *blockRelationStore) Commit(dbTx model.DBTransaction) error {
 	for hash, blockRelations := range brs.staging {
-		err := dbTx.Put(brs.hashAsKey(&hash), brs.serializeBlockRelations(blockRelations))
+		blockRelationBytes, err := brs.serializeBlockRelations(blockRelations)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(brs.hashAsKey(&hash), blockRelationBytes)
 		if err != nil {
 			return err
 		}
@@ -57,14 +63,20 @@ func (brs *blockRelationStore) BlockRelation(dbContext model.DBReader, blockHash
 	return brs.deserializeBlockRelations(blockRelationsBytes)
 }
 
-func (brs *blockRelationStore) serializeBlockRelations(blockRelations *model.BlockRelations) []byte {
-	panic("implement me")
-}
-
-func (brs *blockRelationStore) deserializeBlockRelations(blockRelationsBytes []byte) (*model.BlockRelations, error) {
-	panic("implement me")
-}
-
 func (brs *blockRelationStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
 	return bucket.Key(hash[:])
 }
+
+func (brs *blockRelationStore) serializeBlockRelations(blockRelations *model.BlockRelations) ([]byte, error) {
+	dbBlockRelations := serialization.DomainBlockRelationsToDbBlockRelations(blockRelations)
+	return proto.Marshal(dbBlockRelations)
+}
+
+func (brs *blockRelationStore) deserializeBlockRelations(blockRelationsBytes []byte) (*model.BlockRelations, error) {
+	dbBlockRelations := &serialization.DbBlockRelations{}
+	err := proto.Unmarshal(blockRelationsBytes, dbBlockRelations)
+	if err != nil {
+		return nil, err
+	}
+	return serialization.DbBlockRelationsToDomainBlockRelations(dbBlockRelations)
+}
diff --git a/domain/consensus/datastructures/blockstatusstore/blockstatusstore.go b/domain/consensus/datastructures/blockstatusstore/blockstatusstore.go
index 342a36804..7dc718640 100644
--- a/domain/consensus/datastructures/blockstatusstore/blockstatusstore.go
+++ b/domain/consensus/datastructures/blockstatusstore/blockstatusstore.go
@@ -1,6 +1,8 @@
 package blockstatusstore
 
 import (
+	"github.com/golang/protobuf/proto"
+	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
@@ -35,7 +37,11 @@ func (bss *blockStatusStore) Discard() {
 
 func (bss *blockStatusStore) Commit(dbTx model.DBTransaction) error {
 	for hash, status := range bss.staging {
-		err := dbTx.Put(bss.hashAsKey(&hash), bss.serializeBlockStatus(status))
+		blockStatusBytes, err := bss.serializeBlockStatus(status)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bss.hashAsKey(&hash), blockStatusBytes)
 		if err != nil {
 			return err
 		}
@@ -73,12 +79,18 @@ func (bss *blockStatusStore) Exists(dbContext model.DBReader, blockHash *externa
 	return exists, nil
 }
 
-func (bss *blockStatusStore) serializeBlockStatus(status model.BlockStatus) []byte {
-	panic("implement me")
+func (bss *blockStatusStore) serializeBlockStatus(status model.BlockStatus) ([]byte, error) {
+	dbBlockStatus := serialization.DomainBlockStatusToDbBlockStatus(status)
+	return proto.Marshal(dbBlockStatus)
 }
 
 func (bss *blockStatusStore) deserializeHeader(statusBytes []byte) (model.BlockStatus, error) {
-	panic("implement me")
+	dbBlockStatus := &serialization.DbBlockStatus{}
+	err := proto.Unmarshal(statusBytes, dbBlockStatus)
+	if err != nil {
+		return 0, err
+	}
+	return serialization.DbBlockStatusToDomainBlockStatus(dbBlockStatus), nil
 }
 
 func (bss *blockStatusStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
diff --git a/domain/consensus/datastructures/blockstore/blockstore.go b/domain/consensus/datastructures/blockstore/blockstore.go
index 1cd9a8c5b..c8f164cc5 100644
--- a/domain/consensus/datastructures/blockstore/blockstore.go
+++ b/domain/consensus/datastructures/blockstore/blockstore.go
@@ -1,6 +1,8 @@
 package blockstore
 
 import (
+	"github.com/golang/protobuf/proto"
+	"github.com/kaspanet/kaspad/domain/consensus/database/serialization"
 	"github.com/kaspanet/kaspad/domain/consensus/model"
 	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
 	"github.com/kaspanet/kaspad/domain/consensus/utils/dbkeys"
@@ -35,7 +37,11 @@ func (bms *blockStore) Discard() {
 
 func (bms *blockStore) Commit(dbTx model.DBTransaction) error {
 	for hash, block := range bms.staging {
-		err := dbTx.Put(bms.hashAsKey(&hash), bms.serializeBlock(block))
+		blockBytes, err := bms.serializeBlock(block)
+		if err != nil {
+			return err
+		}
+		err = dbTx.Put(bms.hashAsKey(&hash), blockBytes)
 		if err != nil {
 			return err
 		}
@@ -95,12 +101,18 @@ func (bms *blockStore) Delete(dbTx model.DBTransaction, blockHash *externalapi.D
 	return dbTx.Delete(bms.hashAsKey(blockHash))
 }
 
-func (bms *blockStore) serializeBlock(block *externalapi.DomainBlock) []byte {
-	panic("implement me")
+func (bms *blockStore) serializeBlock(block *externalapi.DomainBlock) ([]byte, error) {
+	dbBlock := serialization.DomainBlockToDbBlock(block)
+	return proto.Marshal(dbBlock)
 }
 
 func (bms *blockStore) deserializeBlock(blockBytes []byte) (*externalapi.DomainBlock, error) {
-	panic("implement me")
+	dbBlock := &serialization.DbBlock{}
+	err := proto.Unmarshal(blockBytes, dbBlock)
+	if err != nil {
+		return nil, err
+	}
+	return serialization.DbBlockToDomainBlock(dbBlock)
 }
 
 func (bms *blockStore) hashAsKey(hash *externalapi.DomainHash) model.DBKey {
diff --git a/domain/consensus/utils/subnetworks/from_bytes.go b/domain/consensus/utils/subnetworks/from_bytes.go
new file mode 100644
index 000000000..a2e612d80
--- /dev/null
+++ b/domain/consensus/utils/subnetworks/from_bytes.go
@@ -0,0 +1,17 @@
+package subnetworks
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/pkg/errors"
+)
+
+// FromBytes creates a DomainSubnetworkID from the given byte slice
+func FromBytes(subnetworkIDBytes []byte) (*externalapi.DomainSubnetworkID, error) {
+	if len(subnetworkIDBytes) != externalapi.DomainSubnetworkIDSize {
+		return nil, errors.Errorf("invalid hash size. Want: %d, got: %d",
+			externalapi.DomainSubnetworkIDSize, len(subnetworkIDBytes))
+	}
+	var domainSubnetworkID externalapi.DomainSubnetworkID
+	copy(domainSubnetworkID[:], subnetworkIDBytes)
+	return &domainSubnetworkID, nil
+}
diff --git a/domain/consensus/utils/transactionid/from_bytes.go b/domain/consensus/utils/transactionid/from_bytes.go
new file mode 100644
index 000000000..d407f4b88
--- /dev/null
+++ b/domain/consensus/utils/transactionid/from_bytes.go
@@ -0,0 +1,17 @@
+package transactionid
+
+import (
+	"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
+	"github.com/pkg/errors"
+)
+
+// FromBytes creates a DomainTransactionID from the given byte slice
+func FromBytes(transactionIDBytes []byte) (*externalapi.DomainTransactionID, error) {
+	if len(transactionIDBytes) != externalapi.DomainHashSize {
+		return nil, errors.Errorf("invalid hash size. Want: %d, got: %d",
+			externalapi.DomainHashSize, len(transactionIDBytes))
+	}
+	var domainTransactionID externalapi.DomainTransactionID
+	copy(domainTransactionID[:], transactionIDBytes)
+	return &domainTransactionID, nil
+}