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See reward tokens / yield on Aura Pools

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  • Select the pool, navigate to the Info tab and open the Rewards Contract Address in etherscan
    ​
    Screenshot 2022-11-01 at 10.53.01.png
    • rewardRate is the reward rate for BAL per second
    • extraRewards(N) is the contract address for additional rewards (outside of AURA, BAL, ie. LDO, bb-a-USD)
    • AURA is minted pro-rata to BAL accrued.
      ​
      export const getAuraMintAmount = (
      balEarned: number,
      global: Omit<Global, 'auraMinter' | 'auraMinterMinted'>,
      ) => {
      const reductionPerCliff = BigNumber.from(global.auraReductionPerCliff);
      const maxSupply = BigNumber.from(global.auraMaxSupply);
      const totalSupply = BigNumber.from(global.auraTotalSupply);
      const totalCliffs = BigNumber.from(global.auraTotalCliffs);
      const minterMinted = BigNumber.from(0);
      // e.g. emissionsMinted = 6e25 - 5e25 - 0 = 1e25;
      const emissionsMinted = totalSupply.sub(maxSupply).sub(minterMinted);
      // e.g. reductionPerCliff = 5e25 / 500 = 1e23
      // e.g. cliff = 1e25 / 1e23 = 100
      const cliff = emissionsMinted.div(reductionPerCliff);
      // e.g. 100 < 500
      if (cliff.lt(totalCliffs)) {
      // e.g. (new) reduction = (500 - 100) * 2.5 + 700 = 1700;
      // e.g. (new) reduction = (500 - 250) * 2.5 + 700 = 1325;
      // e.g. (new) reduction = (500 - 400) * 2.5 + 700 = 950;
      const reduction = totalCliffs.sub(cliff).mul(5).div(2).add(700);
      // e.g. (new) amount = 1e19 * 1700 / 500 = 34e18;
      // e.g. (new) amount = 1e19 * 1325 / 500 = 26.5e18;
      // e.g. (new) amount = 1e19 * 950 / 500 = 19e17;
      let amount = simpleToExact(balEarned).mul(reduction).div(totalCliffs);
      // e.g. amtTillMax = 5e25 - 1e25 = 4e25
      const amtTillMax = maxSupply.sub(emissionsMinted);
      if (amount.gt(amtTillMax)) {
      amount = amtTillMax;
      }
      return amount;
      }
      return BigNumber.from(0);
      };
​