transactionData

OID4VP 1.0: OPTIONAL. Non-empty array of strings, where each string is a base64url-encoded JSON object that contains a typed parameter set with details about the transaction that the Verifier is requesting the End-User to authorize. The Wallet MUST return an error if a request contains even one unrecognized transaction data type or transaction data not conforming to the respective type definition.

In the response the hash is taken over the string itself and so it should not be Base64URL decoded before. For type-safe usage see transactionDataDecoded