Transaction not yet indexed

668YWAhbGR2a2iy7R56x9AEyiXsMhCFcmpFwPS2nw9iy1guWB2zXVMErsxCqe2CAkET6bs9BUk9RHKR1Lftu7jqr

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