Transaction not yet indexed

668MRcU37Fif3GRu6c5df4rVEaKDbB8RAM58Q8DMaaQASZR45qxGXyTTfaknZfr9i8T3hFiL1Fn2e2woUkHjAGS1

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