Transaction not yet indexed

668cVik4xYXh3dGLZxUuBUWw2kjNPSSimNhVmKG8Mf7dnUpfx4aaMw2nXwfRi3NqnqtaqkpsUR92RnFg2MESZbch

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