Transaction not yet indexed

668SkSQjuWsTg4PfLk2vptVjM3TArpt66yBiTuuCFrKf4UYKujSjMsdUWMfd3pULdeXDMoHuVTNKR3wyFwXpxP1m

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