AttachMetadata overview

AttachMetadata operation - attaches transaction metadata to auxiliary data.

Transaction metadata is stored in the auxiliary data of a transaction and allows attaching arbitrary structured data following CIP-10 standard label registry. Common use cases include NFT metadata (CIP-25), transaction messages (CIP-20), and royalty information (CIP-27).

Added in v2.0.0

Table of contents

• programs
  • createAttachMetadataProgram

programs

createAttachMetadataProgram

Creates a ProgramStep for attachMetadata operation. Attaches metadata to the transaction's auxiliary data.

Implementation:

1. Validates that the label hasn't been used already
2. Creates or updates the ConwayAuxiliaryData with new metadata
3. Preserves existing plutus and native scripts in auxiliary data

Signature

export declare const createAttachMetadataProgram: (
  params: AttachMetadataParams
) => Effect.Effect<void, TransactionBuilderError, TxContext>

Added in v2.0.0