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What is BOB?

The Vision: The Bank of Bitcoin​

BOB is building the Bank of Bitcoin - reimagining banking for the Bitcoin age. One platform for everything: swapping, saving, earning, and borrowing, all on Bitcoin rails.

Bitcoin is the world's most important financial asset, yet its utility has barely been unlocked. BOB exists to change that. By fusing Bitcoin's unmatched security with Ethereum's versatility, BOB's hybrid chain turns BTC into a fully productive asset.

The Problem: Users and institutions want to do more with their Bitcoin: swap, save, earn, and borrow - but today's options force trade-offs between security, usability, and trust. Projects and apps need liquidity in the world's most trusted asset, without compromising on Bitcoin's guarantees.

The Solution: BOB - The Bank of Bitcoin​

BOB is doing for Bitcoin what neobanks did for fiat money - and then taking it into the future. Swap BTC into any asset or deposit directly into DeFi on any chain with a single click, powered by Bitcoin intents. Save, lend, and earn securely with native Bitcoin vaults.

For Users: 1-click native BTC swaps, staking, DeFi deposits, and vaults - all accessible in a single transaction. Multi-chain BTC DeFi across 11+ major chains including Ethereum, Base, and BNB. Direct CEX deposits and hardware wallet support.

For Developers: BOB Gateway API and SDK bring frictionless Bitcoin interoperability and native BTC access to dapps.

Key Innovation: The first chain to achieve finality from both Ethereum and Bitcoin.

The Technology: The BOB Stack​

BOB is building the banking stack for Bitcoin. The hybrid chain is a ZK rollup on Ethereum, also secured by Bitcoin, combining the best of both networks into a single platform.

Core Architecture​

  • Bitcoin Security: BTC on BOB is protected by Bitcoin's security model via BitVM
  • Ethereum Compatibility: Full EVM compatibility with ZK proofs
  • Hybrid Finality: The first chain with finality secured by both Bitcoin and Ethereum networks.
  • Native BTC Integration: 1-click native BTC swaps and DeFi deposits powered by Bitcoin intents, with instant swaps coming soon.

Why build on BOB?​

1-click Swap & Earn​

  • Best Bitcoin UX in the ecosystem - swap, stake, and earn with just 1 transaction
  • Multi-chain BTC DeFi: 1-click native BTC swaps and DeFi deposits across 11+ major chains
  • Direct CEX deposits and hardware wallet support via BOB Gateway API
  • Instant BTC swaps coming soon

BitVM / Bitcoin Security​

  • BOB co-authored the BitVM2 bridge design paper
  • Member of the BitVM Alliance
  • Launched bitvm/acc to educate and recruit institutional partners
  • BitVM live on testnet for institutional onboarding
  • Secured by billions of dollars of staked BTC via BOB Finality Providers

Ecosystem​

  • Best-in-class EVM and DeFi infrastructure based on the OP stack
  • 120+ projects and institutional partners building with BOB
  • Tier 1 DeFi choosing BOB: Uniswap, Euler, Aave, LiFi, Chainlink, Babylon, Solv
  • Institutions choosing BOB: Fireblocks, Anchorage Digital, Cobo, ForDeFi, and more
  • Strong stablecoin infrastructure with USDC, USDT, Chainlink CCIP, LayerZero

Next Steps​