Transaction not yet indexed

668Gz2BKwvSSsMbUH9xYc5nFQf8rddgAQexfYU6USRF42xEnNYeXCHVbLe8trTGyY3bi2B9k4ERXcED2ZXrGA59k

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