It's very interesting, the TLDR is: (1) publish one or more blocks of data as inscriptions (2) these blocks can contain state changes e.g. they can move a native token from one address to another (3) publish a client that validates those state changes using the EVM

Boom: the EVM but on bitcoin

Some downsides:

- there is no 2 way peg, so the token on this rollup is some sort of altcoin (could be a 1 way peg though)

- the only reason that rollup data gets dumped onto bitcoin is because rollup users don't want to host that data, which is stupid

super_testnet

It may be also the Bitcoin Proof-of-Work blockspace vs Proof-of-Stake in any other protocol..

notgeld

It seems like we are on the verge of block space getting very scarce. 

Also, the idea of lightning channels opened on sovereign rollups is quite exciting with nearly infinite possibilities. 