Transaction not yet indexed

668vFmfVf6ipHcA8FvS1PTP9sx3PqDLP8qPfkeLVoaTPdAACHCHRecVCbQKahxFQBBG35afGDr5iCjq5S3JtcYnz

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