Bitcoin Faces Data Availability Challenges, Layer 2 (L2) Scaling Solutions May Need Consideration
Bitcoin faces significant challenges as a data availability (DA) layer. The main points are as follows:
Limited Block Space: The upper limit of Bitcoin's block size is 4MB, and data released by ZK-Rollup every 6-8 blocks can occupy 10% of the block space.
High Costs: At a rate of 10-50 sat/vByte, the monthly data publishing cost for Rollup is approximately $460,000 to $2.3 million.
Economic Viability: Rollup needs to handle a large volume of transactions each month and charge sufficient fees to be profitable. For example, with a monthly transaction volume of 20 million, the transaction fee needs to be $0.05-0.23 to break even.
Increased Competition: The introduction of Rollup will increase competition for block space, potentially raising transaction fees for all users.
Alternative Options: If costs are too high, Rollup might switch to alternative DA layers like Celestia or develop L3 solutions.
Security Trade-offs: Using Bitcoin as a DA layer is very costly but offers great decentralization and security.
