Transaction not yet indexed

666MFNiAD4dj7NSBsrswv59cRLbYXbX28rXs9HwZPyqQJCgDJVSwM8MQMjGZBu5AX9FuVeHdWKmqYFm9z6oDr7ZF

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.