Looking for help: I'm building a frame for Arbitrum and I need frame signatures for it

In the docs, it says doing it is "difficult" outside of OP mainnet, but it doesn't say it's impossible. It gives no docs for how this can be done though

Does anybody know?

Co-founder of @PaimaStudios
Working on onchain games, autonomous worlds, zk and L2s.

Also co-founder of @dcspark_io

You ll have to provide a state proof from optimism and verify it onchain on Atrbitrum, you might want (or even need) to use zk to make this efficient

Game Designer building Permissionless and persistent game worlds 
-  https://ronan.eth.limo
- https://etherplay.io (@etherplay)


But thinking of this, you ll need a way to ensure the state proof correspond to a optimism block height  and I am not sure there is way in Arbitrum to know about this.
On the superchain, it might be possible, at least theoreticaly