Transaction not yet indexed

668cDo5ppMkXWLXMomqmT984rk53eGPqGo5ZUu7jvteiRXihcg8b5tPDMEcrykXLpJn7WndVeU75UGJAidLSvSwQ

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