Transaction not yet indexed

668cMBumSnPbzi21Nsy9hV59d6np3LAMRe1XvMRCseST6KEUia9g1ou8YuZFGPjUw1v4SYUvrKqKAxGouY2nVKDr

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