Transaction not yet indexed

668DDm6rm7gqUd56MLKH1exPFjHq2Rf6PkKeusfYbcJpysxhU2k31QGPGncSbyeHtteQdkAqBEr9ByHAuQQtt65g

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