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
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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.
The formula for determining how much AURA is emitted per BAL can be found here:https://etherscan.io/token/0xC0c293ce456fF0ED870ADd98a0828Dd4d2903DBF#code#F1#L85​
A chart can be found here:https://docs.google.com/spreadsheets/d/16VSvgp-ejkra03ykyh-2nlxeCMEDvBZ-LFjuaQo6Ym8/​
A typescript implementation can be found here:
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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);
};
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Don't use onchain queries
After AuraMinter.inflationProtectionTime() has passed, this calculation might not be valid
A solidity library implementation can be found here (AuraMining): https://etherscan.io/address/0x744Be650cea753de1e69BF6BAd3c98490A855f52​
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Last modified 24d ago