Transaction not yet indexed

668M6rgc8ao76AxLRK8vw2QBQKVmfS1vANKR9yqjeRobFtkaBQNCxHBFShMBQqdg7ayyUefdKRvxL2zDDRP3b3jE

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