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bigchaindb/docs/server/source/data-models/asset-model.md
libscott 7e33f2bd52 Tx ID as Asset ID (#926) 
* Allow AssetLinks to be used in place of Assets in the Transaction Model and enforce `Transaction.transfer()` to only take an AssetLink

* Remove AssetLink's inheritance from Asset

* Remove id from the Asset model

* Fix get_txids_by_asset_id query for rethinkdb after removing asset's uuid

Because `CREATE` transactions don't have an asset that contains an id
anymore, one way to find all the transactions related to an asset is to
query the database twice: once for the `CREATE` transaction and another
for the `TRANSFER` transactions.

* Add TODO notice for vote test utils to be fixtures

* Update asset model documentation to reflect usage of transaction id

* Fix outdated asset description in transaction schema
2016-12-20 17:28:15 +01:00

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The Digital Asset Model

To avoid redundant data in transactions, the digital asset model is different for CREATE and TRANSFER transactions.

A digital asset's properties are defined in a CREATE transaction with the following model:

{
    "data": "<json document>"
}

For TRANSFER transactions we only keep the asset ID:

{
    "id": "<asset's CREATE transaction ID (sha3-256 hash)>"
}
  • id: The ID of the CREATE transaction that created the asset.
  • data: A user supplied JSON document with custom information about the asset. Defaults to null.