Transaction not yet indexed

642UTCfHx2qz98zxUyevZSKN72GpibUaLKMVaCPgH79foPy3F5LSN8kH7GV78ChbmiPJ6kVvcWVvwq19bgfJsNy1

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