Marketplace to sell and buy NFTs (ERC721) with ERC20 tokens through the 0x v4 protocol.

• Install dependencies

cd hardhat && npm install

• Create .env file (like .env.example) with your keys

INFURA_API_KEY=
PRIVATE_KEY= # your account's private key in order to deploy contracts
ETHERSCAN_API_KEY= # to verify the deployed contracts

• To compile the contracts and generate typechain typings for compiled contracts:

npx hardhat clean && npx hardhat compile && npx hardhat typechain

• (Optional) You need to copy and paste the Typechain typings generated to the frontend directory so the Dapp works. There is already a script for that:

npm run typechain

• Run tests:

npx hardhat test

• NextJS : React Framework
• Prisma : Node.js and TypeScript ORM
• PostgreSQL : Open Source Relational Database
• RainbowKit : Connect Wallet Button
• Web3UIKit : UI Components
• wagmi : React Hooks for Ethereum
• NFT Swap SDK : P2P Swap Library powered by the 0x protocol

In order to run the project locally follow the next steps:

• Install dependencies

cd frontend && npm install

• Create .env file (like .env.example) with your keys. You can omit setting database variables one by one and copy the database URL directly in DATABASE_URL. The NEXT_PUBLIC_API_TOKEN helps making the API routes private, only within the client.

ALCHEMY_API_KEY=
DATABASE_HOST=
POSTGRES_USER=
POSTGRES_PASSWORD=
POSTGRES_DB=
DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${DATABASE_HOST}/${POSTGRES_DB}
DATABASE_URL_WITH_SCHEMA=${DATABASE_URL}?schema=public
NEXT_PUBLIC_API_TOKEN=

• Create and start the docker container with the PostgreSQL database:

docker compose up -d

• Create migrations from the Prisma schema, apply them to the database and generate artifacts:

npx prisma migrate dev --preview-feature

• Run the app:

npm run dev

Open http://localhost:3000 with your browser to see the website

• Users can request new NFT tokens to be minted, no restrictions here, anyone can request new NFT minting free-of-charge
• Users can list their NFT token for sale for any price they want using the ERC-20 token.
• Users can list and review all existing and yet not executed sell offers.
• Users can accept the existing sell order from some other user and purchase the NFT using ERC-20

• ERC-20 token standard using the OpenZeppelin implementation.
• ERC-721 token standard using the Azuki project implementation.