Transaction not yet indexed

668PRf444Yuu4QTEKJHuNAhExLR54NefLPdu48ruHh1qBxjV4VXj3kUj8PDEXV2H7XYxziWe9nmeRCbsfG2K5Cs5

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