Transaction not yet indexed

668hMTpr5Ca35WfUDv7ywnqLcG8p54c5RDMwhVrc9SeCJ4UmHeMMvVie7RsJXs2wFr2mu6g2zzJSBLvtEVGckf52

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