Transaction not yet indexed

668ZtTcYHGoyfAHTaMyRu9TbvZb9U9q3NmK8v169vhiiPZSjfTrxdn99Bb4MPwb9HjsMnCWvvG7ivFC4jGVopvU6

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