Build everything on Bitcoin

BOB is a hybrid L2 that combines the security of Bitcoin with the versatility of Ethereum

Uniting the best of Bitcoin and Ethereum

EVM smart contracts

BOB allows devs familiar with EVM to start building on Bitcoin now. Be the fastest to market, powered by the best-in-class EVM tooling, wallets, analytics, and key blockchain infrastructure, as well as a tailor-made Bitcoin developer suite.

Bitcoin alignment

BOB is a collective undertaking to scaling Bitcoin the right way: inheriting security from Bitcoin PoW, contributing to Bitcoin's economy and providing usable decentralization for builders today - without waiting for hard forks.

Dual liquidity

Connected to both Bitcoin and Ethereum, BOB sources liquidity from the two largest blockchain ecosystems and positions itself to be the market's top solution for DeFi mass adoption.

Total Value Locked

$

100000000

Explore the BOB ecosystem and harvest spice

Subwallet
Blockscout
Openbit
Ledger
Onekey
Particle
Owlto.finance
wBTC
NFT2ME
RedStone Oracles
Safe
Memecorn
Blueshift
Meson Finance
Gate Wallet
Subwallet
Blockscout
Openbit
Ledger
Onekey
Particle
Owlto.finance
wBTC
NFT2ME
RedStone Oracles
Safe
Memecorn
Blueshift
Meson Finance
Gate Wallet
Ordz games
Resevoir Relay
Orbiter
Stargate
Layer Zero
tBTC
Segment Finance
PixelBOBs
Fabled
BitPerp
CoNft
Artoshi
Bitsmiley
Corridor Finance
Leather
UniSat
Ordz games
Resevoir Relay
Orbiter
Stargate
Layer Zero
tBTC
Segment Finance
PixelBOBs
Fabled
BitPerp
CoNft
Artoshi
Bitsmiley
Corridor Finance
Leather
UniSat
xverse
Demex
Ice Cream Swap
Layer Bank
Portal DeFi
Kartel
Myso Finance
Shoe Bill
Sonne Finance
Sovryn
StakeStone
Tarot
iZi Swap
Velodrome
Another World
xverse
Demex
Ice Cream Swap
Layer Bank
Portal DeFi
Kartel
Myso Finance
Shoe Bill
Sonne Finance
Sovryn
StakeStone
Tarot
iZi Swap
Velodrome
Another World
For Projects

Launch and Grow on BOB

BOB has the best-in-class EVM and Bitcoin infrastructure, paired with the fastest onramps for BTC, stablecoins and ERC20s.

For EVM Projects

BOB is the easiest way to get exposure to the massive Bitcoin ecosystem: the largest web3 user base, massive BTC liquidity and novel assets including Runes, Ordinals, BRC20s, etc.

For Bitcoin Apps

BOB is the best way to get access to Ethereum's DeFi powerhouse. Onboard DeFi power users, plug into the best on/off-ramps and tap into deep liquidity in stablecoin and other bluechip assets.

For Developers

The Ultimate Dev Playground

Come build on the intersection of Bitcoin and EVM using the state-of-the-art developer tooling, analytics, wallets, and blockchain infrastructure. Go from idea to mainnet faster than ever, powered by BOB’s SDK - your Swiss army knife for all things Bitcoin and EVM smart contracts.

BOB is powered by Optimism OP Stack

Start Building

BOB Mainnet

The BOB mainnet is now live. Deploy your smart contracts now and participate in the BOB Fusion ecosystem growth program.

Developer Resources

Check out our comprehensive developers docs and access resources to develop protocols on Bitcoin.

Frequently Asked Questions

Understand why we are building BOB and how it works on a high level. Then, dive into the details of the stack and the technology.

Roadmap

Building the first hybrid L2, one block at a time.

Completed

Phase 1

Bootstrapping BOB: Optimistic ETH 
Roll-up

In progress

Phase 2

ETH Rollup with Bitcoin PoW Security

In research

Phase 3

Optimistic Bitcoin Rollup via BitVM

In research

Phase 4

ZK-Rollups if Bitcoin ever adds the necessary opcode

Backed by

Castle Island Ventures logo
Coinbase Ventures logo
IOSG Ventures logo
Mechanism Capital logo
CMS logo
Bankless Ventures logo
Alliance logo
Antalpha Ventures logo
Asymmetric logo
Bitcoin Frontier Fund logo
UTXO logo
Nexo logo
Web3.com Ventures logo
Rockway logo
Zee Prime Capital logo
Via BTC CApital logo
Silvermine logo
Modular Capital logo
Daedelus logo
Hypersphere logo
DFG logo
Blockchain.com logo