MAPO Developer Docs
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  • Overview
  • Learn
    • About MAP Protocol
      • Background
      • Introduction of MAP Protocol
      • History of MAP Protocol
    • Comparison with other cross-chain models
      • MAP Protocol vs Cosmos & Polkadot
      • MAP vs other cross-chain solutions without relay chain
    • Technical Mechanism
      • MAP Protocol's Technical Mechanism
      • Three-layer Architecture
      • MAP Protocol Layer
        • Concept
        • Isomorphism with All Chains
        • Verification & Maintenance Network
      • MAP Omnichain Service (MOS) Layer
      • MAPO Application Layer
      • Peer-to-Peer Cross-chain Technology with ZK-enabled Light Clients
      • Interact with Bitcoin
    • Gas Fee Model
    • DAO
    • Construction of MAP Protocol
      • Developers
      • Validators
      • Maintainers
      • Messengers
      • Liquidity providers
      • End users
    • Tokenomics
    • Purchase $MAP
  • Develop
    • MAP Relay Chain
      • Getting Started
        • Build
        • Make Private Chain
        • How To Vote
        • How To Withdraw
        • Integrate an Exchange
        • Integrate MAP Relay Chain with EVM-Compatible Chains
      • Consensus
        • Overview
        • Proof-of-Stake
        • Validator
          • Validator
          • Locked MAP
        • Election
        • Rewards
        • Aggregated Seal
      • Contracts
        • Precompiled Contracts
        • Genesis Contracts
          • ABI
            • AccountsABI
            • ElectionABI
            • EpochRewardsABI
            • LockedGoldABI
            • ValidatorsABI
          • Deploy
      • Marker
        • Genesis
        • Validator
        • Vote
        • ContractOwner
        • Common
      • Account-Abstraction
    • Light Client
      • Verification based on Light Client
      • MAPO Light Client
        • EVM Chains
        • Near
      • Light Clients
        • Client Manager
        • BNB Smart Chain
        • Near Protocol
        • Polygon(Matic)
        • Ethereum 2.0
        • Klaytn
        • Conflux)
      • Maintainer
    • MAP Omnichain Service (MOS)
      • MOS Message Guides
        • How It Works
        • How To Use
        • EVM Chains Contract
      • MCS Guides
        • How It Works
        • How To Use
          • How To On Evm Chains
          • How To On Near Protocol
        • Relay Chain Contract
        • EVM Chains Contract
        • Near Protocol Contract
      • Messenger
      • API
    • OmniChain Examples
      • OmniApp
      • OmniDictionary
    • API & SDK
      • Butter SDK
      • Atlas JSON RPC
      • Atlas Consensus API
      • MAP Scan API
    • Connected Chains and Corresponding Addresses
  • Run
    • How To Become A New Validator
    • How To Become A New Validator[advanced]
    • Withdraw
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On this page
  • What is a Validator?
  • Registration
  • Reward source of validator
  • DeRegister
  • Implementation

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  1. Develop
  2. MAP Relay Chain
  3. Consensus
  4. Validator

Validator

PreviousValidatorNextLocked MAP

Last updated 2 years ago

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What is a Validator?

Map’s consensus protocol is performed by nodes that are selected as validators. There is a maximum cap on the number of active validators that can be changed by governance proposal, which is currently set at 100 validators. The active validator set is determined via the proof-of-stake process and is updated at the end of each epoch, a fixed period of approximately 3 days.

Registration

Any account that has at least the minimum stake requirement in Locked MAP, whether voting or non-voting, can register an validator. If a validating key is specified it may be used for this registration.

Reward source of validator

The reward of validator comes from a certain proportion of the system reward of each session. This certain proportion is set at registration time and can be changed later.

DeRegister

In order to prevent malicious occupation of resources during deregister, we put your deregister request in pending status and perform batch logout in the last block of the epoch.

Implementation

handles registration, deregistration, staking, key management and epoch rewards for validators, as well as routines to manage the members of Accounts.

deRegister
Validators.sol