Transaction not yet indexed

668MPKqo9UPTbnzH69ANPiCGyt7hcQD9q3Tu3QaG8vHxZVVCKb9nL9fx15MJuYMRWZhsARebuD6PtrTkDJDXby1u

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