On The Brink with Castle Island Alexei Zamyatin (Build on Bitcoin) on True Rollups on Bitcoin (EP.608)
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Apr 2, 2025 
In this discussion, Alexei Zamyatin, cofounder of Build on Bitcoin, dives into the evolving landscape of Bitcoin rollups. He argues whether Bitcoin can match Ethereum's rollups and breaks down how the innovative BitVM and BitVMv2 are game changers. Topics include Bitcoin's unique DeFi potential, the risks of L2s possibly overshadowing Bitcoin, and the pressing need for soft forks. Zamyatin also shares insights on BOB's roadmap for 2025, emphasizing the crucial role of technical advancements and community governance in shaping Bitcoin's future.
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Bitcoin Ecosystem Maturing
- Bitcoin L2 development shifts from hype to application building and DeFi.
- Top DeFi players show renewed interest, signaling ecosystem maturity.
Stages of Rollups
- Bitcoin rollups haven't reached "stage one" yet, unlike some Ethereum rollups.
- "Stage zero" rollups on Bitcoin are still under development, similar to some on Ethereum.
BitVM v2: Key Innovation
- BitVM v2 enabled optimistic rollups and simplified the challenge process with permissionless challenging.
- It reduced steps to 3-4 transactions, making it more practical.