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Hemi is a modular Layer-2 blockchain network designed to unify Bitcoin and Ethereum into a single “supernetwork”. Built using the Cosmos SDK and OP Stack technologies, Hemi runs a Geth-based EVM (the hVM) alongside a unique Proof-of-Proof consensus mechanism that leverages Bitcoin’s hashpower for security. This architecture lets developers deploy Ethereum-standard smart contracts that can seamlessly interact with Bitcoin’s state and assets. By converging the two largest blockchain ecosystems, Hemi enables new possibilities – from Bitcoin-collateralized DeFi and crosschain DEXs to multi-chain DAOs – all on a secure, scalable L2 platform.

__Hemi Labs__
Hemi’s development is led by Hemi Labs, co-founded by early Bitcoin core developer Jeff Garzik and blockchain security expert Max Sanchez. Backed by investors like Binance Labs, Breyer Capital, and Big Brain Holdings, Hemi Labs drives core protocol development and ecosystem growth. The team’s vision is progressive decentralization: with mainnet live as of March 2025, Hemi is moving toward community governance and expanded validator/miner participation.

about-hemi

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Unlock a New Class of Dapps with Hemi’s Bitcoin-Ethereum Supernetwork

Hemi redefines what a Layer-2 can be by combining Bitcoin’s proven security with Ethereum’s rich programmability, and delivering seamless interoperability from day one.

High-Performance Infrastructure for Crosschain DeFi

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Sign up for a free Infura account (MetaMask Developer Dashboard) and add Hemi to your project’s networks. You can start interacting with Hemi’s testnet or mainnet instantly using your existing API key

Be Part of the Converged Future

Leverage your go-to Ethereum tools. Connect MetaMask to Hemi (Chain ID 43111), deploy contracts with Hardhat or Foundry, and enjoy Ethereum’s developer experience on a chain that’s also attuned to Bitcoin.

Seamless Integration

Create dApps that span Bitcoin and Ethereum like never before. Whether it’s a BTC lending platform, a crosschain DEX, or an AI application anchored on Bitcoin for trust, Hemi’s infrastructure (28K TPS capacity, sub-15s block times, ~6-conf finality) ensures maximum performance with minimum friction.

Build Without Limits

Hemi is a Bitcoin-secured Layer 2 network that merges Bitcoin’s security with Ethereum’s flexibility. Built on the OP Stack and powered by Proof-of-Proof consensus.

♦ Open Beta ♦


The modular Layer-2 unifying Bitcoin and Ethereum.