Transaction not yet indexed

668DKfjp6qyga3FHCRZRHSiSTZG3gFXGpCajTgxdogcpKxCcCPkMjaKdrk92i4jdntaMdqLKuUSS5srAR8CE6VkW

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