Transaction not yet indexed

668yCMWBmSvVoamkhaEhvPsXHc4gVoxMHfxhfhn4fbev5W6LCvigKqteQvWSgWRUsuDDXwgouYVUt61UjbRKZLSR

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