Transaction not yet indexed

668FJ2aX86RhcBP16r13HrekwzUf3wTcuE4uWLfH1NeTKX7zywR2dV9jPVxkYUMMxT1XcdEp1zMZz9xPRSc1robT

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