Transaction not yet indexed

668LiSsp8QbH2exz7LDnKqqeL2dpJpwYQZ36YbSumBGAnu23UTjWFfvdFQwa3yMiSpiSiZae3xiUhqJxrXEmEyFT

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