Transaction not yet indexed

668RyVqcUnFFGw9X7hapEvAjaTef39dLhCmcqgLAt5T83UMHmL1CFCq4GeFe3svvxheLzApSH8dZUGSYgz1X5e7w

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