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In this episode of Unchained, host Laura interviews Alexei Zamyatin, co-founder of Build on Bitcoin, Willem Schro\xe9, founder of Botanix Labs, and Orkun K\u0131l\u0131\xe7, co-founder of Chainway Labs. They discuss their respective projects, all of which are focused on developing Layer 2 solutions for Bitcoin.\xa0\nZamyatin's Build on Bitcoin is a hybrid Layer 2 that connects to both Bitcoin and Ethereum, aiming to bring innovation back to the Bitcoin ecosystem. Schro\xe9's Botanix Labs is developing a decentralized Layer 2 solution using the \u2018Spiderchain,\u2019 which uses a series of multi-signature wallets to secure the chain. K\u0131l\u0131\xe7's Chainway Labs is building Citrea, a zk-rollup on Bitcoin that aims to create a Bitcoin-backed economy.\xa0\nAll three projects are in various stages of development and testing, with BOB\u2019s mainnet launch expected shortly.\nShow highlights:\n\nIntroduction to Build on Bitcoin (BOB), Botanix, and Citrea: How they aim to innovate and expand Bitcoin's capabilities, including their architectural designs that integrate Ethereum users and work toward decentralization and trustlessness\n\nSecurity Aspects and Integration Strategies: What the security risks associated with BOB, Botanix, and Citrea are, and strategies to enhance decentralization over time\n\nHow these Layer 2s influence Bitcoin fees, and how Botanix's integration can leverage the Bitcoin ecosystem, with insights on the potential of Layer 3s and zk-rollups to transform Bitcoin's utility and fee dynamics\n\nHow these projects aim to attract Ethereum users and developers, and the reasons why this may be an attractive opportunity for them\n\nHow Runes, Ordinals, and BRC-20s operate on Citrea, Botanix, and BOB\n\nHow Bitcoin is always a derivative when it\u2019s not in its Layer 1 and the pros and cons of different bridging solutions\n\nThe concept of forward secrecy and how it can help improve security in blockchains\n\nWhy Willem believes that Layer 3s are possible and bullish for Bitcoin\n\nHow "merged mining\u201d resembles Ethereum\u2019s restaking and why it\u2019s positive for Bitcoin\n\nThank you to our sponsors!\nPolkadot\nGuests:\n\n\nWillem Schro\xe9, founder of Botanix Labs\xa0\n\n\nOrkun K\u0131l\u0131\xe7, cofounder of Chainway Labs\xa0\n\n\nAlexei Zamyatin, cofounder of Build on Bitcoin\n\nLinks\n\nRecent coverage on Unchained of Bitcoin L2s:\n\nStacks\u2019 Muneeb Ali On Why Bitcoin Is Exciting Once Again\n\nBuild on Bitcoin\n\nBOB learning documents\n\n\nAnnouncement of mainnet on May 1st.\n\nUnchained: Bitcoin DeFi App Sovryn to Deploy on Hybrid Layer 2 Network Build on Bitcoin\n\n\nAlexei\u2019s tweet on BitVM/rollups\xa0\n\nAlexei went on a retreat with the inventor of BitVM\n\nCitrea\n\nUnchained: Here's What You Should Know About Citrea, Bitcoin's First ZK Rollup\n\n\nWhitepaper\n\nOrkun Mahir K\u0131l\u0131\xe7\u2019s interview on Unchained Premium\n\nCitrea learning documents\n\nClementine -Citrea's BitVM Based Trust-Minimized Two-Way Peg Program\n\nBotanix\n\nCoinDesk: Willem Schro\xe9: Building Botanix, a Bitcoin Layer 2 That Brings the EVM to Bitcoin\n\n\nBotanix and the Future of Bitcoin\n\nBitcoin Magazine: Spiderchains: A Proof Of Stake Second Layer For Bitcoin\n\n\nWillem Schro\xe9\u2019s interview on Unchained Premium\n\nLearn More:\xa0\n\nUnchained:\xa0\n\nWhat Is the OP_CAT Bitcoin Improvement Proposal?\xa0\n\nWhat Are Opcodes in Bitcoin? A Beginner's Guide\xa0\n\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices