Quick BOB descriptors
- "Hybrid L2" + "Bitcoin security powered by BitVM" + "trust-minimized BTC and ETH bridges"
- "EVM smart contracts, secured by Bitcoin"
- L2 that uses Bitcoin security for trust-minimized bridges to BTC, ETH, SOL and other L1s.
What is BOB?
BOB ("Build on Bitcoin") is a first-of-its-kind hybrid Layer-2 powered by Bitcoin and Ethereum. By combining the security, liquidity, userbase, and innovation of the two largest blockchain ecosystems, BOB closes the gap between Bitcoin as a vehicle for mass adoption and Ethereum as a hub for innovation. BOB is bootstrapped as an ETH OP-Superchain rollup, next adding Bitcoin security and trust-minimized BTC bridging via BitVM.
BOB is backed by Castle Island Ventures, Mechanism Capital, Coinbase Ventures, and other high-profile VCs and is positioned to become the most secure and accessible Layer-2 for builders and users.
Why BOB?
- Best of Bitcoin and Ethereum: Leverages Bitcoin’s Proof-of-Work (POW) finality for security, while integrating Ethereum’s EVM capabilities for innovation and usability.
- Native BTC bridge: Powered by BitVM2, BOB will enable secure and seamless deployment of BTC into DeFi.
- BTC as the center of DeFi: Using Bitcoin security, BOB will maintain trust-minimized bridges for BTC, ETH, as well as other L1s. Instead of wrapping BTC to other chains, users deploy assets into BOB to get access to BTC liquidity - removing the need for centralized exchanges.
- 1-click BTC staking: Already live on mainnet, BOB enables users to stake BTC into dozens of products, including LSTS and DeFi vaults - with only 1 BTC transaction.
BOB Ecosystem
There are 100+ projects live or building on BOB, notably: