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What is hemi.xyz?

Bitcoin You Can Program (No Wraps, No Bridges, No Go-Betweens)

Wait… Bitcoin can do what now?

Bitcoin, the most secure blockchain in the world, has always lacked one thing — the ability to program.

While Ethereum and other smart contract platforms grew into full DeFi ecosystems, Bitcoin stayed still: valuable, sure, but not active.

Any attempt to integrate it with DeFi required:

  • Wrapped BTC on Ethereum

  • Risky bridges and custodians

  • Oracles and off-chain trust assumptions

That era is over.

Meet Hemi.xyz - a Layer 2 you can change that joins Bitcoin's safety with Ethereum's ability to program using no wrappers, no bridges, and zero go-betweens.

What Is Hemi?

Hemi is a new system that brings real Bitcoin straight into smart contracts and without needing trust.

Key Innovation Highlights

  • hVM: Ethereum Virtual Machine + full Bitcoin node

  • PoP (Proof-of-Proof): Bitcoin-level finality in under 90 minutes

  • Tunnels: Direct, trustless BTC ↔️ ETH communication (no bridges)

  • TVL: Over $1 billion locked in just 38 days

  • Backed by: Binance Labs

  • Built by: Jeff Garzik (ex-Bitcoin Core) and Max Sanchez (PoP inventor)

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Key Innovation by Hemi

This isn’t a sidechain.

It’s a modular Layer 2 that treats Bitcoin not as a “dumb asset” but as a first-class programmable citizen.

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How Hemi solves Scalability, Security, and Interoperability?

Adoption Traction:

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Adoptation on Hemi

  • 200,000+ PoP Miners competing to anchor state to Bitcoin.

  • 20M+ Transactions executed on Sepolia testnet—88% of testnet volume.

  • 914K Wallets onboarded since Testnet V1.

  • 35+ Integrations including Sushi, Pendle, Pyth, LayerZero.

Team & Investors:

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  • Jeff Garzik (CEO): Core Bitcoin dev since 2010. Collaborated with Satoshi.

  • Max Sanchez (CTO): Creator of PoP. Built VeriBlock (secured $1B in assets).

  • Backers: Binance Labs, Breyer Capital, Crypto.com.

  • Funding: $15M raised at a $150M FDV.

Hemi’s Technical Architecture - Core Components

1. hVM (Hemi Virtual Machine)

The hVM is a dual-execution runtime that combines:

  • Ethereum Virtual Machine (EVM): For running Turing-complete smart contracts.

  • Bitcoin full node: For real-time verification of BTC transactions and blocks.

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hVM (Hemi Virtual Machine)

How it works:

Bitcoin Integration: The full Bitcoin node is baked into Hemi’s infrastructure. it:

  • Verifies incoming Bitcoin blocks.

  • Parses real Bitcoin UTXOs and transaction payloads.

  • Maintains SPV proofs (Simple Payment Verification).

EVM Layer: The EVM operates like any L2 (e.g., Arbitrum, Optimism), but can access Bitcoin data natively using built-in opcodes or precompiles.

Example:

if (btcTx.confirmed && btcTx.amount >= 1 BTC) {
    releaseEscrow();
}

BTC-Oracles Are Native: There's no Chainlink or relay needed. The Bitcoin node itself is the oracle. This ensures:

  • No data latency.

  • No trust assumptions.

  • Bitcoin finality guarantees.

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hVM (Hemi Virtual Machine)

2. PoP (Proof-of-Proof)

PoP is a consensus layer that achieves Bitcoin-level finality by anchoring L2 state into the Bitcoin mainnet every 90 minutes.

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PoP (Proof-of-Proof) consensus

How it works:

Merkle Commitments: Hemi L2 batches transactions and creates a Merkle root.

Anchoring: This Merkle root is committed as an OP_RETURN or Taproot-embedded proof into Bitcoin mainnet.

Reorg Resistance: Once the proof lands in 6 Bitcoin confirmations (~90 mins), the state is considered immutable.

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Trust Model:

  • No honest majority needed.

  • Finality is inherited directly from Bitcoin.

  • Validators must prove consistency with BTC chain, or be slashed.

3. Tunnels (Trustless BTC↔️ETH Bridge)

Tunnels enable atomic movement of BTC into Hemi’s EVM without wrapping or custodians.

How it works:

User Sends BTC: A user sends real BTC to a Hemi-monitored deposit address.

SPV Proof Generation: After 6 confirmations, Hemi’s embedded Bitcoin node verifies the TX and creates an SPV proof (proof-of-inclusion in the Bitcoin block header).

Mint BTC on EVM: A smart contract validates the SPV proof and mints native BTC representation (not a wrapped token, but a state-bound 1:1 mapping secured by Bitcoin headers).

Exit (Burn + SPV Exit):

  • User burns the token.

  • Generates a Merkle proof.

  • Hemi releases BTC from a non-custodial Bitcoin script, usually a Taproot/Miniscript vault.

What makes it different:

  • No multisig.

  • No third-party custodians.

  • Exit proofs are enforced on both BTC and EVM sides.

4. Bitcoin-Secure Sequencer (BSS)

The BSS is a decentralized set of actors who produce Hemi blocks, resolve cross-chain state, and submit results to Ethereum and Bitcoin.

How It Works:

Block Aggregation:

  • Gathers Bitcoin headers, mempool transactions, and EVM txs.

  • Maintains a consistent view of Bitcoin’s state (via PBV, see below).

Block Production:

  • Builds Hemi blocks that include EVM txs and Bitcoin context.

State Commitments:

  • Posts calldata to Ethereum for fraud-proof-based settlement.

  • References Bitcoin headers in each block (used in PoP).

Security:

  • Sequencers must stake $HEMI tokens.

  • Slashing enforces correct state commitments.

  • Can be replaced or challenged by decentralized validators.

Developer Stack in Hemi

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Developer Stack in Hemi.xyz

Tokenomics: $HEMI Utility & Emissions Model

  • Total Supply: 10B

  • Annual Inflation: 3–7% for sequencers and PoP miners

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Hemi Tokenomics

Utility:

  • Gas: Fees can be paid in ETH or $HEMI (1% conversion tax for ETH).

  • Governance: Proposals for upgrades, tunnel rules, token inflation.

  • Staking: Needed to run Sequencer or Challenger nodes.

What Can You Build with Hemi?

Real BTC DeFi

  • Borrow/lend BTC on-chain.

  • Create escrows that unlock when BTC TXs land.

  • DEXs that auto-settle with BTC, not wBTC.

BTC-native MEV

  • Build relays that detect real BTC mempool TXs.

  • Use ETH contracts to frontrun or arbitrage BTC trades.

Cross-chain Triggers

  • Example: If BTC sent to address X, auto-mint NFT on ETH.

  • Chain-level event handling across BTC ↔️ ETH in real time.

Trustless Escrows

  • BTC is locked in a Bitcoin Taproot script.

  • Conditions are monitored by smart contracts on EVM.

  • Fully decentralized OTC without middlemen.

Why This Changes Everything?

No More Wrapping

  • No wBTC.

  • No bridges that get hacked.

  • BTC lives and breathes directly on-chain.

Bitcoin Maxis vs Ethereum Degens — United

  • Bitcoin gives security + finality.

  • Ethereum gives composability + dev experience.

  • Hemi merges both natively.

TVL + Adoption

  • $1B TVL in just 38 days.

  • Backed by Binance Labs, Jeff Garzik (ex-Bitcoin Core), and Max Sanchez (PoP inventor).

What’s Next? The Road to TBTC Domination

Why TBTC will dominate:

  • Bitcoin has >$500B idle liquidity.

  • ETH-native DeFi is mature, but lacks pristine collateral.

  • Once builders realize they can build real DeFi on BTC, it unlocks:

Use cases to watch:

  • Sovereign stablecoins backed by BTC.

  • BTC-based DAOs with provable treasury.

  • NFT royalties paid directly in BTC via smart triggers.

TL;DR: Hemi = BTC Meets EVM, For Real

No bridges. No wrappers. No trust assumptions.

Just real, programmable Bitcoin, powered by:

  • hVM (BTC + EVM in one)

  • PoP (Bitcoin-secured finality)

  • SPV-based Tunnels (trustless interop)

  • $1B TVL in 38 days

  • Backed by top builders

Bitcoin isn’t just money anymore. It’s programmable. And it’s live.

Key Citations