Transaction not yet indexed

668mfrRsnWWPHoAEAYCFpKAF28buqZcUpL2MKBEvLVPvSeSmZWXcwwSP3KNY4bYMiQQN8XLrTGphe6hB35vpcoYA

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