Transaction not yet indexed

668WcbsLJAh8YfEtqu4VRiB6NUtEDTwaQcDSkeZ52hqfbkBCDtN3M5uwni9SNe7NdASeVdvSZ7oWJr8cTG7gy49c

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