Transaction not yet indexed

668fmgZLmPSHJqpgpcbwLPiPKao7yi6KVkqXV3Rcz5uijmkBprSGa4NyCWhmMZkzJjarZfqXJtmNVFoUwQvfYMEk

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