Transaction not yet indexed

666CudTwU6BK3FnZwJutSQ5Un5x8YpZFkq1QyNsjCYgqfLYa4mPnL67S8WYHeiwZR7qFNYraHF4mpZSkRSr4k1rb

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