ClankerAirdropV2

struct AirdropExtensionData {
    address admin; // controller of the token's airdrop admin functions
    bytes32 merkleRoot; // the merkle root of the airdrop
    uint256 lockupDuration; // the duration of the lockup period
    uint256 vestingDuration; // the duration of the vesting period
}

// admins can claim the remaining balance after the claim expiration
// interval has been reached
function adminClaim(address token, address recipient) external;

// update the merkle root of the airdrop by admin if the merkle root is
// zero or if the claim overwrite interval has passed without a claim
function updateMerkleRoot(address token, bytes32 newMerkleRoot) external;

// update the admin of the airdrop
function updateAdmin(address token, address newAdmin) external;

// callable by anyone, transfers the available tokens to the recipient
function claim(address token, address recipient, uint256 allocatedAmount, bytes32[] calldata proof) external;

// helper function to surface the amount available to claim for a user,
// assumes that there exists a proof for the allocated amount
function amountAvailableToClaim(address token, address recipient, uint256 allocatedAmount) external view returns (uint256);