Transaction not yet indexed

668MfuMy3GcgmBfvy415eZtzzcT4MFMsHHRzGDZRjD6UwawFyBvGPAHGVLDaevJp6KtBFmLrfeoNhgxY5T7BNWbM

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