English Auction
An Arbitrum Stylus version implementation of Solidity English Auction.
Auction
- Seller of NFT deploys this contract.
- Auction lasts for 7 days.
- Participants can bid by depositing ETH greater than the current highest bidder.
- All bidders can withdraw their bid if it is not the current highest bid.
After the auction
- Highest bidder becomes the new owner of NFT.
- The seller receives the highest bid of ETH.
Here is the interface for English Auction.
1interface IEnglishAuction {
2 function nft() external view returns (address);
3
4 function nftId() external view returns (uint256);
5
6 function seller() external view returns (address);
7
8 function endAt() external view returns (uint256);
9
10 function started() external view returns (bool);
11
12 function ended() external view returns (bool);
13
14 function highestBidder() external view returns (address);
15
16 function highestBid() external view returns (uint256);
17
18 function bids(address bidder) external view returns (uint256);
19
20 function initialize(address nft, uint256 nft_id, uint256 starting_bid) external;
21
22 function start() external;
23
24 function bid() external payable;
25
26 function withdraw() external;
27
28 function end() external;
29
30 error AlreadyInitialized();
31
32 error AlreadyStarted();
33
34 error NotSeller();
35
36 error AuctionEnded();
37
38 error BidTooLow();
39
40 error NotStarted();
41
42 error NotEnded();
43}
1interface IEnglishAuction {
2 function nft() external view returns (address);
3
4 function nftId() external view returns (uint256);
5
6 function seller() external view returns (address);
7
8 function endAt() external view returns (uint256);
9
10 function started() external view returns (bool);
11
12 function ended() external view returns (bool);
13
14 function highestBidder() external view returns (address);
15
16 function highestBid() external view returns (uint256);
17
18 function bids(address bidder) external view returns (uint256);
19
20 function initialize(address nft, uint256 nft_id, uint256 starting_bid) external;
21
22 function start() external;
23
24 function bid() external payable;
25
26 function withdraw() external;
27
28 function end() external;
29
30 error AlreadyInitialized();
31
32 error AlreadyStarted();
33
34 error NotSeller();
35
36 error AuctionEnded();
37
38 error BidTooLow();
39
40 error NotStarted();
41
42 error NotEnded();
43}
Example implementation of a English Auction contract written in Rust.
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