Build a Notabene Travel Rule flow: create a transaction, exchange PII, and confirm compliance before settlement

Verified steps

1. Authenticate: POST https://auth.notabene.id/oauth/token with {"grant_type": "client_credentials", "client_id": "YOUR_CLIENT_ID", "client_secret": "YOUR_CLIENT_SECRET", "audience": "https://api.notabene.id"} to obtain a Bearer token
2. Discover the beneficiary VASP: GET https://api.notabene.id/tf/simple/vasps?address=<destination_address> to determine if the address belongs to a registered VASP in the Notabene network; capture the beneficiaryVASP DID
3. Create the Travel Rule transaction: POST https://api.notabene.id/tf/transaction with IVMS101-structured body including originator (naturalPerson or legalPerson with primaryIdentifier, accountNumber), beneficiary (name fields), originatingVASP DID, beneficiaryVASP DID, asset, amount, and blockchain txHash (if known)
4. Encrypt PII fields using the Notabene PII SDK with the beneficiary VASP's public key before including them in the payload — the SDK handles ECIES encryption
5. Poll GET https://api.notabene.id/tf/transaction/{transactionId} and wait for status ACK_ACCEPTED (or the jurisdictionally required equivalent); REJECTED status means the beneficiary VASP has declined to accept the transfer
6. Once ACK_ACCEPTED, proceed with on-chain broadcast (if not already sent) and update the Notabene transaction with the txHash via PUT /tf/transaction/{transactionId}