Transaction not yet indexed

668uzTmfKPdtnH1AfR9u4TM2TMdQhrBdtzjuGV7NVkKXFSCA27SnUD1TvbEDG52sD7sehtNMeczUKdd1PZZS7yfH

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