Transaction not yet indexed

668i52cEn3M4ffeuM4RLmNJdB2HFrDiSoexcuS6i2gnnBvQ6nKnoNSAv954EKwfgDv8dExui1Wf5Li9hw25519bs

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