Transaction not yet indexed

668dKx8SFJQTvmWXVq3M6AKVa7qWbbff6LPUmCShgkUUee4oUYhPn5FX9mrV8bSC2ZyMrGCgGs2qaErCKGSamV8z

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