Transaction not yet indexed

6668PUcRvstBdRVs8Sm5tbqxmaS3niEwvqFbWrXFipTeK9xrcJQDKWSFosNWsLLBsMW5mZyyfb9KPWpadjbqa99x

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