This project demonstrates a homemade ERC721 with additional functionalities such as listing your NFT for sale and purchasing . It comes with a contract, a test for that contract, a script that deploys that contract.
Try running some of the following tasks:
npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
node scripts/sample-script.js
npx hardhat helpThis smart contract has all the functions that make it ERC721 compliant and it is fully documented.
It has the below functions implemented from scratch :
balanceOf(owner)
ownerOf(tokenId)
safeTransferFrom(from, to, tokenId)
transferFrom(from, to, tokenId)
approve(to, tokenId)
getApproved(tokenId)
setApprovalForAll(operator, _approved)
isApprovedForAll(owner, operator)
safeTransferFrom(from, to, tokenId, data)
It additionally has two primary functionality apart from other standard functions :
addListing (uint256 price , uint256 tokenId) - which helps users list their NFT for a price they want to sell
purchase (uint256 tokenId) - which helps users purchase the NFT
This smart contract is written using best practices that optimise for gas.