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DePay's Claimable NFT Airdrops

Smart contract allowing to airdrop NFTs without sending them to the receivers but instead having receivers withdrawal them through the airdrop contract.

Airdrop distributors reate off-chain signatures that can be used by the airdrop receiver to redeem them for the NFT.

Deployments

Mainnet

DePayNFTAirdropV1 XXX

Ropsten

DePayNFTAirdropV1 0x1ceadd57e477901499c08aec5d2044cc3430d7fc

ERC721 0xe7f982e9f25471bc1dd6a84a5433274834d7853f9b49357ece40538ce2c5d7af

ERC1155 0xb6bb75ae8af249891b1cdcb92a6cb74c6c1b30f8

Functionalities

claim Claim NFT

The main function allowing people to redeem off-chain airdrop signatures for NFTs.

Arguments:

address tokenAddress: The address of the NFT to be claimed.

address[] receivers: An array of all receivers, required to validate off-chain signatures.

bool isERC1155: Boolean indicating if the airdrop token is a ERC1155 (otherwise falling back to ERC721).

uint256[] tokenIds: Ids of all airdroped NFT tokens, required to validate off-chain signatures.

uint256 index: Position/index of the current receiver within receivers and tokenIds.

uint8 v: v of the off-chain signature.

bytes32 r: r of the off-chain signature.

bytes32 s: s of the off-chain signature.

Deploy

  1. yarn flatten

  2. Deploy flatten contract via https://remix.ethereum.org/