Transaction not yet indexed

668JwjdtCpwhUDZmArFneNDhnU9eA744E2oyoeMG2FuKMiNQkRx3t2vtyQmGM4RSK5EinJ6LSYfHsuYGH6TuUVU8

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