Ocean DataToken Yield Farming

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【Introduction of the Ocean DataToken Yield Farming】

• This is a smart contract for ocean's data-token yield farming by using liquidity mining approach.

 

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【Workflow】

• ① Create a Balancer-Pool between Ocean and DataToken. (Add Liquidity)
• ② Receive BPTs=Balance Pool Tokens (Ocean-DataToken) and the Ocean LP Tokens (OLP) when add liquidity into a Balancer-Pool (Ocean-DataToken).
  • Ocean LP Tokens (OLP) represents BPTs=Balance Pool Tokens (Ocean-DataToken) when an user stake (Step③).
  • Received-Ocean LP Tokens (OLP) amount is same amount with received-BPTs amount.
• ③ Stake Ocean LP Tokens (OLP) into the Ocean Farming Pool contract.
• ④ Smart contract (the Ocean Farming Pool contract) automatically generate rewards per block.
  • The Ocean Governance Token (OGC) is generated as rewards.
  • Staker can receive rewards ( Ocean Governance Token (OGC) ) depends on their share of pool and staked-period (blocks) when they claim rewards.
• ⑤ Claim rewards and distributes rewards into claimed-staker. (or, Un-Stake BPTs (Ocean-DataToken). At that time, claiming rewards will be executed at the same time)

 

【Diagram】Ocean DataToken Yield Farming

 

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【Remarks】

• Version
  • Solidity (Solc): v0.5.7
  • openzeppelin-solidity: v2.4.0

 

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【Setup】

① Install modules

$ npm install

② Compile & migrate contracts (on local)

$ npm run migrate:local

③ Test (Mainnet-fork approach)

• 1: Start ganache-cli with mainnet-fork

$ ganache-cli --fork https://mainnet.infura.io/v3/{YOUR INFURA KEY}@{BLOCK_NUMBER}

• 2: Execute test of the balancer-related contract (on the local) (BPool and BToken)

$ npm run test:balancer
($ truffle test ./test/test-local/ocean-v3/unit/balancer/*)

• 3: Execute test of the Ocean Farming Pool contract (on the local)

【Ocean Farming Pool】
$ npm run test
($ truffle test ./test/test-local/OceanFarmingToken.test.js)
($ truffle test ./test/test-local/OceanGovernanceToken.test.js)


$ npm run test:farming
($ truffle test ./test/test-local/OceanFarmingPool.test.js)

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【Remaining tasks and next steps】

• Additional implementation of the Ocean Governance Token (OGC) and governance structures (e.g. Community voting function by OGC token holders)
• Add liquidity pool (balancer pool) for the Ocean Governance Token (OGC).
• Implement the front-end (UI).

 

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【References】

• Ocean Protocol
  • Ocean V3 smart contract
    https://github.com/oceanprotocol/contracts
  • Ocean V3 Document
    • Data Token: https://docs.oceanprotocol.com/concepts/introduction/
  • dApp (Ocean Market)： https://market.oceanprotocol.com/
  • Website (Earn): https://oceanprotocol.com/earn
  • Ocean Data Economic Challenge 2020
    • Guide：https://oceandec.devpost.com/details/hackerguide

• Balancer
  • BPT (Balancer Pool Token): https://docs.balancer.finance/core-concepts/protocol/pool-lifecycle#bpts
  • BAT (Balance Governance Token): https://docs.balancer.finance/core-concepts/bal-balancer-governance-token
  • Interfaces: https://docs.balancer.finance/smart-contracts/interfaces

• SushiSwap contract: https://github.com/sushiswap/sushiswap
• Benchmark protocol contract: https://github.com/benchmarkprotocol

• Truffle test
  • Mainnet-fork approach with Ganache-CLI and Infura
    https://medium.com/@samajammin/how-to-interact-with-ethereums-mainnet-in-a-development-environment-with-ganache-3d8649df0876
    (Current block number @ mainnet: https://etherscan.io/blocks )