@evolution-sdk/[email protected]

Patch Changes

• #113 7905507 Thanks @solidsnakedev! - Add attachMetadata() operation to TransactionBuilder for attaching transaction metadata according to CIP-10 standard.

  Changes:

  • Added attachMetadata() method to attach metadata with custom labels
  • Metadata labels are now bigint (unbounded positive integers) supporting CIP-20 messages (label 674) and custom labels
  • Automatic computation of auxiliaryDataHash in transaction body when metadata is present
  • Proper fee calculation accounting for auxiliary data size
  • TransactionMetadatum refactored to simple union type: string | bigint | Uint8Array | Map | Array
  • Added NonNegativeInteger schema to Numeric module for unbounded non-negative integers

  Example:

  await client
    .newTx()
    .attachMetadata({
      label: 674n, // CIP-20 message label
      metadata: "Hello Cardano!"
    })
    .payToAddress({ address, assets })
    .build()
    .then((tx) => tx.sign().submit())