Transaction not yet indexed

668usMAxaqWTCTANFG1SbYshmrUGQLfrMFyKkxfirLn3iCHswDVnqCFNcFTuTTMKoo2EfN2z7L9pE7cqQCGZcf3W

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