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How to Check if a User Has Claimed a Boost

The Boost SDK provides methods to verify if a user has claimed any incentives on a boost. Since a boost can have multiple incentives, you’ll need to check the claim status of each incentive separately using the claimed method. 
const boost = await core.getBoost(17n, { chainId: 8453 });

for (const incentive of boost.incentives) {
  const claimed = await incentive.claimed('0x...'); // address to check
  console.log(claimed); // returns boolean
}

SDK Reference

Learn more about the claimed method and its parameters