Hemi
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  • 🏠Main
    • Welcome to the Hemi Docs
    • Getting Started
      • Developer Quickstart
      • Enthusiast Quickstart
      • Miner Quickstart
    • Network Details
  • ⛰️Foundational Topics
    • The Architecture
      • Consensus and Security Protocols
      • Ethereum Rollups
        • Pros & Cons
        • Decentralized Rollups
      • Sequencer Consensus
        • Proof-of-Stake (PoS)
        • PoS-Only Pitfalls
        • PoS Solutions
      • Proof-of-Proof (PoP)
        • Proof-of-Proof Consensus & Bitcoin Finality
        • Proof-of-Proof vs. Merged Mining
        • Running a PoP Mining
      • Tunnels
        • Ethereum Tunnel
        • Bitcoin Tunnel
      • Ethereum Virtual Machine (EVM)
      • Blocks
      • Transactions
      • Gas
    • Nodes & Clients
      • Node Guides
    • Wallet Support
  • đź“–How-To Tutorials
    • Using Hemi
      • Wallet Setup
        • EVM Wallet Setup
        • BTC Wallet Setup
          • Switch Bitcoin Networks
      • Tunnel from Ethereum
        • Tunnel ERC20s via Native Tunnel
        • Tunnel ERC20s via 3rd Party
          • Tunnel via Stargate
      • Tunnel from Bitcoin
        • Tunnel BTC via Native Tunnel
        • Tunnel BTC via 3rd Party
      • Stake
      • Developer Tooling
        • Set Up a Safe Wallet
        • Create a Capsule
      • PoP Mining
        • CLI PoP Miner
          • (Testnet) Add tHEMI to MetaMask
          • (Mainnet) Add PoPPoints to Metamask
        • Web PoP Miner (deprecated)
    • Developing on Hemi
      • General
        • HelloWorld.sol
        • Deploy an ERC-20 Token
      • hVM & hBK
        • Using the hBK Demo App
        • Get Bitcoin Balance with Remix
  • ⚙️Building Bitcoin Apps
    • Introduction
    • Hemi Virtual Machine (hVM)
      • Motivation
      • Feature Summary
      • Deploy on hVM
    • Hemi Bitcoin Kit (hBK)
      • Overview
      • hBK Smart Contract
  • ⚙️Tooling
    • viem
    • Contract Addresses
    • Contract Verification
    • Data Indexing
    • Oracles
  • 📝Incentives
    • Points
    • Grants
    • Retroactive Funding
    • One-Off Spends
  • ⚡Additional Resources
    • Partners
    • FAQ
    • Official Links
    • Brand Kit
  • 📨Send Feedback
    • Bug Report
    • Contact Us
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  1. Foundational Topics
  2. The Architecture

Consensus and Security Protocols

📜 TL;DR:

  • Incorporates Bitcoin's security to prevent attacks, with PoP Miners embedding consensus data on the Bitcoin blockchain.

  • Rewards PoP Miners in native tokens for strengthening consensus.

  • Utilizes Bitcoin confirmations to ensure network integrity, achieving "Bitcoin Finality" for robust defense against reorganizations.


đź‘€ Sneak Peek WIP

Overview

The Hemi Network's sequencer consensus combines Proof-of-Stake with Proof-of-Proof to address weak subjectivity and censorship attacks inherent in traditional PoS systems.

This hybrid model prevents forged chains through state proofs on the Bitcoin network and allows legitimate sequencers to regain control in adversarial conditions, ensuring the network's resilience and security.


đź”’ Network Security and Finality

  • To inherit Bitcoin security, a new type of miner (a “PoP Miner”) publishes Hemi consensus information to the Bitcoin blockchain.

  • After a state publication to Bitcoin, the Hemi Network’s consensus layer incorporates cryptographic proofs of these publications, with PoP Miners receiving a reward in the protocol’s native token. The network uses these proofs during fork resolution to prevent reorganizations with the full force of Bitcoin’s security.

  • As they are produced, the Hemi Network’s chain segments initially receive Bitcoin confirmations, which means an attacker would have to control increasingly large ratios of staking power to successfully affect a reorganization.

  • During normal operation, each block on the Hemi Network reaches full “Bitcoin Finality” after 90 minutes, or nine Bitcoin blocks, on average.

At this point, it is mathematically impossible for anyone to reorganize the network without 51% attacking Bitcoin itself.

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Last updated 3 months ago

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