Rollups support?

[kolayuk]

Hello, I've heard that Secret started implementing rollups support for cosmos SDK, but I quickly checked codebase, did not find anything related to that. Is there any progress with rollups support?
I am looking for some throughput improvement solution for Cosmos SDK ( to break 10k TPS wall, to achieve 100k for example), and possible solution may be to add internal zones (L3, L2 = main application-blockchain, L1 = cosmos hub), but I have no idea how to keep atomicity with L2 without rollups support in cosmos, could you suggest anything, please?

[assafmo]

Interchain security will allow Secret to spin sub-chains that lease security from the main Secret chain, so that might help with scaling (depends on the implementation). Also, I've heard that Celestia are working on a rollups solution for cosmos chains, so you might want to look there for answers

[kolayuk]

Interchain security will allow Secret to spin sub-chains that lease security from the main Secret chain

But those sub-chains will be independent (with different ledgers), do you plan to keep atomicity between them and main chain somehow? It seems interchain security is about block creation / verification in sub-chains, it will not update ledger / state from the subchains to main chain. Or am I wrong?

And I'll take a look into Celestia, thanks.