Transaction not yet indexed

66C6HFaWK3DqsqW9uUHdPKWpgEXmS5B2pnxbztoF9aSCZ9K4QFnKMFoZrfR9vddEW9DsnsK3rscPCsBKX3itoWR4

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