Transaction not yet indexed

668vsEXgn42ZaHcaU71fBHNFA7KpabZC9wrtS2YJbJ6vbsGHzZzbEEca6X6Co33euGPZJUFGsNFFu17oVKcUYH4z

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