Transaction not yet indexed

668bHMkhstQF8kRg9MNdHZvfaRoyPDnpbXibaGyLsSScjjFAdXG8ShRrdGQAkgaxs5KWDXpps5v86zrpfis6tUo2

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