MANTRA Chain
  • Introduction
    • Overview
    • Why MANTRA Chain
    • Building on MANTRA Chain
    • MANTRA RWA Suite
  • Using MANTRA Chain
    • MANTRA Chain Wallet Setup
      • Connect to Testnet
      • Connect to Mainnet
      • Testnet Faucet
    • MANTRA Zone
    • MANTRA Bridge
      • MANTRA Bridge User Guide
      • MANTRA Bridge FAQs
    • Stake
      • Stake User Guide
      • Stake FAQs
    • MANTRA Swap
      • MANTRA Swap User Guide
      • Liquidity Pools User Guide
      • MANTRA Swap FAQs
    • Claiming Journey
      • Check If You're Eligible
      • Claiming Journey User Guide
      • I've redeemed my rewards, now what?
    • Chakra Pool
      • What can I do with my USDY
      • Chakra Pool Deposit Guide
      • How KARMA works for Chakra Pool
        • How much KARMA do I get for depositing into Chakra Pool?
        • Can I make multiple deposits and how will KARMA be calculated then?
        • My KARMA is not updated even though I make multiple deposits?
        • Will I get daily KARMA for my deposit on USDY Chakra Pool launched on Hongbai earlier?
      • Chakra Pool FAQs
    • MANTRA Zone Leaderboard
      • MANTRA Zone Leaderboard User Guide
        • Mission Guides
          • Pledge your OM 🕉️
          • Claim OM Staking Rewards
          • OMly Drip 💧
      • MANTRA Zone Leaderboard FAQs
  • Developing on MANTRA Chain
    • Getting Started
      • DuKong Testnet
      • Install Prerequisites
      • Setting Up Dev Environment
      • Compiling a Contract
      • Deployment and Interaction
    • CosmWasm Quick Start Guide
      • CosmWasm Contracts
      • Understanding CosmWasm File Structure
    • DAPP Tooling
      • Cosmos SDK
      • Important Libraries
      • Developer Resources
    • Developer FAQs
  • MANTRA Smart Contracts
    • Overview
    • MANTRA Dex
      • 🚢Deployments
      • 📚Common Types
      • 💰Fee Collector
      • ⌛Epoch Manager
      • 🌊Pool Manager
      • 🎁Farm Manager
    • Claimdrop Contract
    • Audits
  • Node & Validator Operations
    • Overview
    • Node Setup & Deployment
      • Node System Requirements
      • Running a Node
      • How to run Mantrachain with Systemd
      • Validator Nodes
        • Connect sidecar
    • Validator Architecture Recommendations
      • Secure Validator
    • Governance
      • Draft a Proposal
        • Text Proposal
        • Community Spend Proposal
        • Software Upgrade
        • Cancel Software Upgrade
      • Submitting a Proposal
      • Verifying your transaction
      • Depositing funds
      • Voting on a Proposal
    • Download nodes snapshots
  • MANTRA Chain with EVM (Alpha)
    • Getting Started on OMSTEAD Testnet
  • Setup Instructions
  • Using Foundry
    • Deployment with Foundry
  • Using Hardhat
    • Deployment with Hardhat
  • Mainnet OM Information
    • Background
    • Updated OM Tokenomics
    • OM Distribution Updates
    • Inflation & Vesting Schedule
    • Legacy tokens to mainnet staking tokens
  • Appendix
    • Frequently Asked Questions
      • General FAQs
        • What is MANTRA Chain?
        • What are the key features/ modules available to builders on MANTRA Chain?
        • What support is available for developers and validators that join the ecosystem
        • Where can i find MANTRA Social Accounts & Communities?
        • How can an Issue or a bug be reported?
        • How can I identify official MANTRA communication and websites?
      • Validator FAQs
        • What does a new validator’s journey look like?
        • What are my key responsibilities as a validator?
        • What is uptime and how is it maintained?
        • What are the hardware requirements?
        • How to get validator keys?
        • How can I connect a validator from an older testnet to the newest testnet?
        • How do I create a backup snapshot of a node?
        • How do I restore a node from a snapshot?
        • What are the different states a validator can be in?
        • How do I unjail a validator?
        • How do I edit a validator's description?
        • What is self-delegation?
        • Is there a minimum amount of OM that must be delegated to be an active validator?
      • Developer FAQs
        • What is MANTRA Chain, and how does it utilize the Cosmos ecosystem?
        • How does MANTRA Chain ensure interoperability with other blockchains in the Cosmos ecosystem?
        • What is the Cosmos ecosystem, and how does it differ from other blockchain platforms?
        • Which programming languages are commonly used for developing on the Cosmos ecosystem?
        • How do I get started with development on the Cosmos ecosystem?
        • What are Cosmos SDK and Tendermint, and how do they work together?
        • What are Cosmos zones and how do they interact?
        • How do I build and deploy smart contracts on the Cosmos ecosystem?
        • How do I interact with Cosmos chains and applications programmatically?
        • What is the best way to learn about developing for the MANTRA Chain and Cosmos ecosystem?
      • Hongbai FAQs
        • Where do I sign up for Hongbai?
        • Why do I need to provide 2 wallets during signup?
        • How can I Login?
        • What should I do if I forgot my password?
        • What can I do if i forget my registered email?
        • Where do i verify my email?
        • How to connect my Metamask wallet?
        • Is Hongbai app a testnet or live app?
        • Can I change my wallet ?
        • Error “invalid user credentials“
        • Why can i not Invest?
      • How to Guides
        • Install Keplr Wallet
        • Keplr and Ledger
        • Add DuKong Testnet to Keplr
        • Get Tokens from Faucet
        • Track activity on Leaderboard
      • More Help & Support
      • MANTRA Zone FAQs
        • MANTRA Zone General FAQs
          • What wallets are currently supported on the MANTRA Zone?
          • How do I connect my wallet to the MANTRA Zone?
          • How do I copy my connected wallet’s address?
          • How do I connect a different wallet to the MANTRA Zone?
          • Can I disconnect my wallet from MANTRA Zone?
          • How can I resolve seeing multiple entires of the same amount of testnet OM in my Keplr wallet?
          • The question that I have is not covered by the FAQ, what should I do?
        • MANTRA Bridge FAQs
          • What is MANTRA Bridge?
          • Why should I use the MANTRA Bridge?
          • Is there a fee for using the MANTRA Bridge?
          • Do I have to pay gas fees?
          • What tokens will I receive?
          • How does the migration process work?
          • How long should the MANTRA Bridge order take?
          • How can I track the status of my MANTRA Bridge order?
          • What happens to my ERC20 OM tokens once I use the MANTRA Bridge?
          • Which network can I use on the MANTRA Bridge?
          • What should I do if I see ‘Wrong network’ error on the app?
          • Will there be a two-way bridge in the future?
          • My MANTRA Bridge order is stuck on Ethereum?! How can I fix this?
          • Who can I contact for support during the migration process?
          • Which EVM chains can I bridge from?
          • Are the OM tokens I receive wrapped tokens or the native MANTRA Chain OM tokens?
          • Is the MANTRA Bridge a non-custodial solution?
          • What happens if the MANTRA Bridge is hacked or goes offline?
          • Are there any risks associated with using the MANTRA Bridge?
          • How does the MANTRA Bridge ensure the security of my tokens during migration?
          • Can I use my existing Ethereum wallet to access the MANTRA Bridge?
          • How does wallet linking and airdrop participation work?
        • Stake FAQs
          • What is Stake?
          • What are validators, and how do I choose one?
          • What rewards can I earn by staking $OM?
          • How are staking rewards calculated?
          • Can I choose to unstake my $OM coins?
          • What is the unbonding period?
          • Can I change validators after staking $OM?
          • Can I stake $OM with multiple validators?
          • Are there any risks involved with staking $OM?
          • Will my rewards gets automatically restaked after redemption?
          • Do I lose my claimable rewards when performing actions with a validator with unclaimed rewards?
          • My wallet is showing a 0 balance even though I have funds. What should I do?
          • How do I know if my $OM is staked?
        • Chakra Pool FAQs
          • What are the Chakra Pool rewards?
          • What is USDY?
          • How do I get the yield from the treasury bonds by holding USDY?
          • Can I change my linked wallet?
          • I don’t remember my linked wallet - what can I do?
          • What are the bonus rewards and where I can see my rewards?
          • How are the USDY rewards calculated and when can I redeem my USDY rewards?
          • How are the $OM rewards calculated and when can I redeem my $OM rewards?
          • How are the $ONDO rewards calculated and when can I redeem my $ONDO rewards?
          • What can I do with my USDY and $OM rewards after redemption?
        • MANTRA Zone Leaderboard FAQs
          • I have someone that wants to participate in the MANTRA Zone Leaderboard but they don’t know how.
          • What does the ⚡icon and ‘Get + x KARMA’ text under the ‘KARMA’ section refer to?
          • The KARMA on the Zone Leaderboard only lists MANTRA Chain wallets, how to check my EVM wallet rank?
          • Which wallet IDs are visible on the Leaderboard Ranking Table?
          • Why are there three different categories for the Leaderboard Ranking Table?
          • How can I get the Leaderboard Ranking Table to show where my connected wallet ranks currently?
          • How can I search where a specific wallet ID ranks in the Leaderboard Ranking Table?
          • How can I search what wallet ID currently ranks in a specific ranking number?
          • My KARMA and/or multiplier amount did not update on the Leaderboard Ranking Table, why is that?
          • What is the calculation for the KARMA?
          • I’m unable to see the OMly Faucet on my Keplr/Cosmostation wallet
          • I'm unable to see my OMly Faucet Claim transaction on the explorer
          • The question that I have is not covered by the FAQ, what should I do?
        • MANTRA Swap FAQs
          • What is Swap?
          • How can I swap?
          • I have connected my EVM wallet, but I’m still unable to swap. Why?
          • Where can I view my past transactions?
          • Why is my swap button disabled?
          • Why can’t I swap with a slippage more than 5%?
          • What is Exchange Rate?
          • How do I get OM tokens in my wallet?
          • How do I get other tokens in my wallet?
          • Will the swap fee be deducted from my sell or buy token?
          • Why can’t I see the balance of tokens in my wallet but on the Swap panel?
          • How do I add liquidity to a pool?
          • I am unable to provide liquidity to the pool.
          • While adding liquidity, why are the two tokens USD value not equal?
          • How do I withdraw my funds from Liquidity Pools?
          • Why can I not see my tokens for withdrawal?
          • Why can I not remove liquidity?
          • Why is my deposited value of the two tokens changing in my position?
          • Do liquidity pools have a bonding period?
          • What are LP tokens?
          • What can I do with my LP tokens?
          • Why can I not see any LP token balance?
          • I am connected with my MANTRA wallet, but still cannot view my positions?
          • I provided liquidity, but I can’t see my position. What should I do?
          • Why is my transaction not successful?
    • Glossary
    • MANTRA's Incentivised Testnet
      • Testnet Phase 1
      • Hongbai - Testnet Phase 2
  • Third Party Bridges
    • Base Bridge
    • Polygon Bridge
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On this page
  • How it works
  • Instantiate
  • ExecuteMsg
  • UpdateConfig
  • UpdateOwnership(::cw_ownable::Action)
  • QueryMsg
  • Config
  • CurrentEpoch
  • Epoch
  • Ownership
  • MigrateMsg
  1. MANTRA Smart Contracts
  2. MANTRA Dex

Epoch Manager

The Epoch Manager is a contract which sole purpose is to generate epochs on MANTRA, acting like a clock for the other contracts.

An Epoch is a period of time that is defined by the duration parameter on EpochConfig, and they are used by other contracts to take timely actions. For example, the Farm Manager uses epochs to calculate the farm rewards for its users.

How it works

The epoch configuration is set up when the contract is instantiated. The epoch configuration defines the duration of an epoch and when the genesis epoch is going to take place, i.e. the first epoch.

Then, when querying the contract, the epochs in the system are derived based on the genesis epoch and duration values.

Instantiate

Instantiates an instance of the epoch manager contract

{
  "owner": "mantra1...",
  "epoch_config": {
    "duration": "86400",
    "genesis_epoch": "1571797"
  }
}
Key
Type
Description

owner

String

The owner of the contract

epoch_config

EpochConfig

The configuration for the epochs

ExecuteMsg

UpdateConfig

Updates the contract configuration. This can only be triggered by the contract owner.

{
  "update_config": {
    "epoch_config": {
      "duration": "86400",
      "genesis_epoch": "1571797"
    }
  }
}
Key
Type
Description

epoch_config

Option<EpochConfig>

The new epoch configuration

UpdateOwnership(::cw_ownable::Action)

Implements cw_ownable. Updates the contract's ownership. ::cw_ownable::Action can be TransferOwnership, AcceptOwnership and RenounceOwnership.

Note: This is a cw_ownable message.

Propose to transfer the contract's ownership to another account, optionally with an expiry time. Can only be called by the contract's current owner. Any existing pending ownership transfer is overwritten.

{
  "update_ownership": {
    "transfer_ownership": {
      "new_owner": "mantra1...",
      "expiry": {
        "at_height": "424242424242"
      }
    }
  }
}
Key
Type
Description

new_owner

String

The new owner proposed,

expiry

Option<Expiration>

Optional expiration time parameter.

Accept the pending ownership transfer. Can only be called by the pending owner.

{
  "update_ownership": "accept_ownership"
}

Give up the contract's ownership and the possibility of appointing a new owner. Can only be invoked by the contract's current owner. Any existing pending ownership transfer is canceled.

{
  "update_ownership": "renounce_ownership"
}

QueryMsg

Config

Returns the configuration of the contract.

{
  "config": {}
}
{
  "epoch_config": {
    "duration": "86400",
    "genesis_epoch": "1571797"
  }
}
Key
Type
Description

epoch_config

EpochConfig

The epoch configuration

CurrentEpoch

Returns the current epoch based on the current timestamp.

{
  "current_epoch": {}
}
{
  "epoch": {
    "id": 0,
    "start_time": "1571797"
  }
}
Key
Type
Description

epoch

Epoch

The current epoch

Epoch

Returns the epoch with the given ID.

{
  "epoch": {
    "id": 100
  }
}
Key
Type
Description

id

u64

The id of the epoch to be queried.

{
  "epoch": {
    "id": 100,
    "start_time": "1571797"
  }
}
Key
Type
Description

epoch

Epoch

The queried epoch with the given id

Ownership

Returns the ownership of the contract.

Note: This is a cw_ownable query.

{
  "ownership": {}
}
{
  "owner": "mantra1...",
  "pending_owner": "mantra1...",
  "pending_expiry": 424242424242
}
Key
Type
Description

owner

Option

The contract's current owner. None if the ownership has been renounced.

pending_owner

Option

The account who has been proposed to take over the ownership. None if there isn't a pending ownership transfer.

pending_expiry

Option

The deadline for the pending owner to accept the ownership. None if there isn't a pending ownership transfer, or if a transfer exists and it doesn't have a deadline.

MigrateMsg

Message to migrate the contract to a new code ID.

{}
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