# Set Asset Script Transaction Binary Format
Learn more about Set Asset Script transaction.
# Version 2
Binary format of version 2 is defined in transaction.proto protobuf scheme. The fields that are common to all types of transactions are described in the Transaction Binary Format article.
Version 2 is enabled by feature #15 “Ride V4, VRF, Protobuf, Failed transactions”.
message SetAssetScriptTransactionData {
bytes asset_id = 1;
bytes script = 2;
};
| Field | Size | Description |
|---|---|---|
| asset_id | 32 bytes | ID of asset |
| script | Up to 8192 bytes | Asset script |
# Version 1
| # | Field | JSON field name | Field type | Field size in bytes | Comment |
|---|---|---|---|---|---|
| 1 | Version flag | Byte | 1 | Indicates the transaction version is 2 or higher. Value must be 0 | |
| 2 | Transaction type ID | type | Byte | 1 | Value must be 15 |
| 3 | Transaction version | version | Byte | 1 | Value must be 1 |
| 4 | Chain ID | chainId | Byte | 1 | 87 — for Mainnet 84 — for Testnet 83 — for Stagenet |
| 5 | Public key of the transaction sender | senderPublicKey | Array[Byte] | 32 | |
| 6 | Token ID to which the asset script is attached | assetId | Array[Byte] | 32 | |
| 7 | Transaction fee | fee | Long | 8 | |
| 8 | Transaction timestamp | timestamp | Long | 8 | |
| 9.1 | Script existence flag | Boolean | 1 | If the value is 0, then the token does not have a script. If the value is 1, then the token has a script | |
| 9.2 | Script size in bytes | Short | S | S = 0 if the value of the "Script existence flag" field is 0.S = 2 if the value of the "Script existence flag" field is 1 | |
| 9.3 | Asset script | script | String | S | S = 0 if the value of the "Script existence flag" field is 0.0 < S ≤ 8192, if the value of the "Script existence flag" field is 1 |
| 10 | Transaction proofs | proofs | See Transaction Proofs Binary Format | S | If the array is empty, then S = 3. If the array is not empty, then S = 3 + 2 × N + 64 × N, where N is the number of proofs in the array.The maximum number of proofs in the array is 8. The size of each proof is 64 bytes |
The fields numbered in bold are the transaction body bytes.
# JSON Representation of Transaction
See the example in Node API.