I am not that excited about citrea. if I want to play with rollups I already have that on ethereum and most of them are better than citrea. I am more excited about the prospect of drivechains being added to litecoin. I would be way more excited if rootstock converts to a drivechain on bitcoin. I still don't have great numbers on how much L1 footprint citrea needs overall or per transaction, and what that would mean. each time citrea commits a batch to L1 it will post two different components in the form of an inscription: - zero knowledge proofs for the entire batch, maybe less than 50 KB every time - state diffs for each L2 transaction, compressed to maybe 35 bytes per transaction this means there is a break-even point where L2 transactions become cheaper than L1 transactions if there are enough of them in the same batch. L2 transaction cost decreases more and more based on how many people are using the L2. but! this hits a ceiling. citrea will never be able to occupy all of the space in a L1 block. you would probably never see over 150 transactions per second without a L1 blocksize increase. this has some disadvantages over ethereum's scaling strategy: - a single ethereum rollup can give way more TPS than what citrea gives, and ethereum has several - ethereum has a dedicated part of L1 blocks called blobspace. it's designed specifically for handling ZK proofs and L2 transaction data, whereas bitcoin has the witness entirely by accident and it's not optimized for this use case - the ethereum community has consensus to gradually expand the number of blobs per block over time. the bitcoin community does not have consensus to increase the effective blocksize at all in either case, each transaction on a rollup maps onto its own L1 footprint. you get a lot of compression, but you still would need to expand the available space on L1 if you want it to grow. rollups do not get around this problem, they just shrink the severity while adding more features. some more thoughts: - the escape hatch will not be available at launch. citrea is technically custodial until this gets added. I will not endorse anything that lacks unilateral exit - nobody has invented a rollup with decentralized sequencing yet, but at least it has forced inclusion to help prevent censorship - probably most of the fees paid by citrea users would go to bitcoin miners - the UX would be better than self-custody lightning and it is more useful - the people who made the OP_RETURN drama wrt citrea are probably freaking out about nothing and have no idea what they are talking about. citrea will most likely use inscriptions for everything because it's cheaper
