MO Docs
  • Summary
  • DOCUMENTATION
    • Learn about the MO Platform
      • MO Overview: vision, strategy and platform components
      • The MO Blockchain
        • Discovering the Network
        • MO Consensus
        • Delegation through Staking with Validators
        • Ethereum (EVM) Compatibility and Smart Contracts
        • Boosting MO's Scalability
      • MO Token (MO)
        • MO Tokenomics
        • Exchanges, Wallets, On-Ramps and DeFi Tools Supporting MO
        • MO on Other Chains
      • Interoperability
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      • Interacting with the MO Blockchain
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  • Developers
    • Network Details
      • MO Mainnet
      • MO Testnet Spark
      • Token Faucets
      • Network Upgrades
        • Upgrade Guide
        • Upgrade Guide (explorer nodes)
        • Block 13,800,000 Fork
        • FIP's
    • MO Consensus
      • Contracts Overview
      • Stake, Delegate and Withdraw
      • Vote
      • End-of-Cycle Flow
      • Contract Addresses
    • How to run network nodes
    • Resources & Tools
      • TheGraph
      • WalletConnect on MO
    • Important smart contracts
      • MO Token
      • MO Dollar
      • Major Deployed Contracts
      • Bridges
        • Ethereum ↔ MO GoodDollar Token
        • Ethereum ↔ MO MO20 Tokens
        • BSC ↔ MO BNB
        • BSC ↔ MO Native
        • BSC ↔ MO MO20
        • Ethereum ↔ MO Native
    • How to become a validator
      • Getting started as a validator
      • Getting started as on the MO testnet
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On this page
  • Consensus - 0x4E8d3ad28E7F75F083Bffd645282B4e2a7a307cE
  • Block Reward - 0xD4C8788Fc018533915d353Cf9215adbaBe215337
  • Voting - 0x5d6d54501b923E8363a2fEE9910a9b1478760706
  • Proxy Storage
  1. Developers

MO Consensus

PreviousFIP'sNextContracts Overview

Last updated 1 year ago

Consensus is a fault-tolerant mechanism that is used in blockchain systems to achieve the necessary agreement on the single state of the network. MO network is using a (DPoS) consensus model. DPoS is a variation of consensus. In PoS there are a set of validators that are responsible for keeping the network updated and validating the network's state. They do this in turns, every validator has their turn in line. On their turn the validator updates the network's state, and the rest of the validators check that the update is valid.

Consensus contract is used to manage the list of the network validators and delegators

BlockReward contract is calculates the reward amount that validators and delegators will receive on each block validation. The reward size is proportional to validator's stake.

With Voting contract validators are vote on various changes on these 3 base level contracts. All those contracts are proxied with implementation that handles the logic. The implementations can be changed only by the Voting process.

The bridge is used to transfer the MO native token between MO and Ethereum networks.

This contract is responsible for handling the network DPos consensus. The contract stores the current validator set and chooses a new validator set at the end of each cycle. The logic for updating the validator set is to select a random snapshot from the snapshots taken during the cycle.

The snapshots are taken of pending validators, who are those which staked more than the minimum stake needed to become a network validator. Therefore the contract is also responsible for staking, delegating and withdrawing those funds.

Stake amount for a validator is the sum of staked and delegated amount to it's address.

minimum stake amount = 10,000 MO token

cycle duration blocks = 57600 (approximately 2 days)

This contract is responsible for generating and distributing block rewards to the network validators according to the network specs (5% yearly inflation).

Another role of this contract is to call the snapshot/cycle logic on the Consensus contract

This contract is responsible for opening new ballots and voting to accept/reject them. Ballots are basically offers to change other network contracts implementation.

Only network validators can open new ballots, everyone can vote on them, but only validators votes count when the ballot is closed.

Ballots are opened/closed on cycle end.

max number of open ballots = 100

max number of open ballots per validator = 100 / number of validators

minimum ballot duration (cycles) = 2

maximum ballot duration (cycles) = 14

This contract is responsible for holding network contracts implementation addresses and upgrading them if necessary (via voting).

This contract is based on non-reporting ValidatorSet .

This contract is based on BlockReward .

Consensus - 0x4E8d3ad28E7F75F083Bffd645282B4e2a7a307cE
described in Parity Wiki
Block Reward - 0xD4C8788Fc018533915d353Cf9215adbaBe215337
described in Parity Wiki
Voting - 0x5d6d54501b923E8363a2fEE9910a9b1478760706
Proxy Storage
Delegated Proof of Stake
Proof of Stake