ScriptDataHash

cometa.transaction_builder.script_data_hash.compute_script_data_hash(costmdls, redeemers, datums=None)[source]

Compute the hash of script data in a transaction.

This function processes redeemers, datums, and cost models to compute a 32-byte hash that represents the script data for a transaction. The data is encoded in CBOR format and hashed using the Blake2b hashing algorithm.

The script data hash is required in the transaction body when the transaction includes Plutus scripts.

Parameters:

  • costmdls (Costmdls) – The cost models for script execution.

  • redeemers (RedeemerList) – The transaction’s redeemers.

  • datums (Optional['PlutusDataSet']) – Optional set of datums included in the transaction.

Returns:

The computed 32-byte Blake2b hash for the script data.

Raises:

CardanoError – If hash computation fails.

Return type:

Blake2bHash

Example

>>> from cometa.transaction_builder import compute_script_data_hash
>>> from cometa.protocol_params import Costmdls
>>> from cometa.witness_set import RedeemerList
>>>
>>> costmdls = Costmdls.new()
>>> redeemers = RedeemerList.new()
>>> # ... populate costmdls and redeemers ...
>>> script_hash = compute_script_data_hash(costmdls, redeemers)
>>> print(script_hash.to_hex())