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:

{
    "id": "<uuid>",
    "data": "<json document>"
}

For TRANSFER transactions we only keep the asset id.

{
    "id": "<uuid>"
}

id: UUID version 4 (random) converted to a string of hex digits in standard form. Added server side.
data: A user supplied JSON document with custom information about the asset. Defaults to null.