Transaction not yet indexed

668vKqdAgxUcyd2weMzstqHyEAc9Jof1v7krQkxGQfDvr1e2Vgo9EBePfJa1Byi6LRUaoyFfd59nbRYd91iCeRT

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