OP_CAT by itself has restricted applicability to the lightning routed fee community itself – it can’t be used to construct Lightning Symmetry channels. It could possibly be used to probably scale back the variety of transactions wanted in resolving lightning penalty with out incurring further round-trips, however the price of the CAT script and required witness information would doubtless exceed the financial savings in transaction inputs and outputs.
Nonetheless, OP_CAT covenants can be utilized to allow constructing improved finish consumer experiences linked to the lightning community, comparable to timeout bushes, Ark, and probably channel factories.
