POA
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  • Welcome to POA
  • Features
    • Known Validators
    • POADAO Consensus
    • Bridged Native Token
    • On-Chain Randomness
  • Use Cases
    • Scalability for BlockChain Games
    • Community-Based Currencies
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    • Ethernal.World
  • Roadmap
  • For users
    • POA Tokens
      • POA Merger & STAKE Swap
      • POA - STAKE FAQs
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      • POA & POA20 on Binance
      • FAQ: POA20 General Questions
    • POA Token Use Cases
      • Utility Token
      • Currency Token
      • Collateral Token
      • Bridged Token
      • Staking Token
      • Stable Token
    • POA to POA20 Bridge
    • Accept POA20 Payments
      • Account Registration & Login (Merchant Setup)
      • Setup Merchant Account
      • Merchant Payment Method Setup
      • Making a Payment with POA20 (Customer Perspective)
    • Tutorials
      • Trading POA20 on DEX.AG
      • POA20 Token Swaps on 1inch.exchange
      • Getting Airdrops via Discord
    • Governance
      • Article: A Successful Year of On-Chain Governance
      • Governance Reports
        • April 2020 Report
        • December 2019 Report
      • Ballot Type, Lifecycle & Limits
    • ❌Nifty Wallet (Discontinued)
      • Getting Started
      • Import and Interact with Smart Contracts
      • Connect to a Hardware Wallet (Ledger & Trezor)
      • Connect to D'CENT Biometric Wallet
      • Connect to Pocket Decentralized Network
    • 3rd Party Wallets
      • Trust Wallet
      • MetaMask
    • POA Mania
      • News - Updates
      • Rules
      • POA Mania FAQs
      • Deposit & Withdraw
      • Winner Selection
      • Round Details
      • POA Mania vs PoolTogether
      • POA Mania on Trust Wallet
      • POA Mania Security Audit
      • POA Mania on MetaMask Mobile
    • Whitepaper
      • POADAO v1
        • Introduction
        • Proof of Authority
        • POA Network Functionality
        • Decentralized apps (DApps)
          • Initial ceremony DApp
          • Proof of Physical Address (PoPA) DApp
          • Proof of Bank Account DApp
          • Proof of Social Network DApp
          • Proof of Phone Number DApp
          • Governance DApp
        • Summary & Acknowledgements
        • References
        • Appendix A: Code Samples
          • Ballots manager
          • Validators manager
          • Deployment scripts for the mining node
  • For developers
    • Developer Resources
    • Getting Tokens For Tests
      • ERC20 Test Token Faucet
      • Sokol Testnet Faucet
    • Full Node Setup
      • Install OpenEthereum Client
      • Install Nethermind Client
    • DApp Deployment
    • TheGraph Data Indexing
    • On-Chain Random Numbers
      • RNG explainer (AuRa + RandomAura Contract)
      • Accessing a Random Seed with a Smart Contract
      • Randomness FAQs
    • API & SQL Access
    • Smart Contract Dashboard
    • Grants for Building on POA
  • For validators
    • Getting Started
      • Validator Resources
      • Becoming a Validator
    • Bootnode Setup
      • AWS Bootnode Setup
        • Prerequisites
        • Configure AWS
        • Download and Configure Playbook
        • Deploy
      • Non-AWS Bootnode Setup & Deployment
        • Local/Remote Machine System Requirements
        • Node Preparation
        • Configure node with Deployment Playbook
    • Validator Node Setup
      • Nethermind Upgrade
      • AWS VM for Validator Node Deployment
        • MoC: Master of Ceremony Key Exchange & Generation
        • Current Validators Vote in New Validators
        • Validator Node Setup Prerequisites
        • Configuring AWS
        • Download and Configure Playbook
        • Deployment
        • Upgrade Instance to a Larger Instance Type
      • Non-AWS Validator Node Setup
        • Local & Remote Machine System Requirements
        • Remote Machine Setup
        • Configure Node using Deployment Playbook
      • NetStats Dashboard
    • Hard Forks
      • Parity Upgrade Guide
      • POA Core
        • 2021-11-02 | #24090200
        • 2021-05-24 | #21364900
        • 2020-03-31 | #14350721
        • 2019-12-19 | #12598600
        • 2019-04-29 | #8582254
        • 2018-01-29 | # 772000
        • 2018-10-22 | #5329160
        • POA Core spec.json hard-fork update
      • Sokol
        • 2021-05-24 | #21050600
        • 2020-02-20 | #13391641
        • 2019-12-05 | #12095200
        • 2019-02-06 | #7026400
        • 2019-01-04 | #6464300
        • 2018-09-19 | #4622420
        • 2018-01-18 | #509355
        • 2018-01-08 | #362296
        • Sokol spec.json hard-fork update
    • Validator DApps
      • Validators MetaData DApp
      • Adding or Removing a Validator
  • Media
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  1. For validators
  2. Hard Forks
  3. Sokol

2018-01-08 | #362296

Hard Fork Date | Block Number

Previous2018-01-18 | #509355NextSokol spec.json hard-fork update

Last updated 5 years ago

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Info

  • Network: Sokol

  • Date: 2018-01-08

  • Block number: 362296

Description

Problems

  • The network is not prepared for an HF. The consensus of validators didn't test multi option for HF which handles consensus contract transition.

  • POA consensus contract on Sokol was outdated from Core. It had no getCurrentValidatorsLength method. Voting DApp didn't work correctly

Solution

  • Update : add new contract to multiset to fix an issue.

  • Organize the HF on block 352296

Instructions

https://github.com/poanetwork/poa-network-consensus-contracts/pull/31
spec.json
Follow Sokol spec.json hard-fork guide