Transaction not yet indexed

668LZGhYAwXnKoGpWZ14PbWwrsDCqk4cirKCSz3TB44MiAF7MQRdFbyFRSEBXi5d2vLMSnad2VV8FLESv441EWX3

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