OpenZeppelin Contracts is a library for secure smart contract development.

WTF Solidity 极简入门教程，供小白们使用。Now supports English! 官网: https://wtf.academy

Dapp learning project for developers at all stages. Becoming and cultivating sovereign individuals. Nonprofit organization.

Modern, opinionated, and gas optimized building blocks for smart contract development.

Seaport is a marketplace protocol for safely and efficiently buying and selling NFTs.

🔑🔑🔑 next generation token approvals mechanism

1inch Protocol – fully on-chain DeFi aggregation protocol

Implementation of the Farcaster contracts

Robust, Feature-Rich Solidity Template Repository for Foundry Projects with Scripting, Testing, and Utility Bash Scripts.

A menagerie of auction mechanisms implemented in Solidity

Variable Rate Gradual Dutch Auctions.

BNB Smart Chain Venus Protocol

An upgradeable, meta-transaction-enabled smart wallet for earning interest on stablecoins while retaining custody of funds, with an added security backstop provided by Dharma Labs.

Solidity implementation of the Basis Cash Protocol

Kleros smart contracts

Bread for the people!

Core smart contracts for GEB

gas efficient & flexible settlement layer for options (derivatives)

The Hardhat environment for strategy development

Tokenlon is a decentralized exchange and payment settlement protocol based on blockchain technology. Visit https://tokenlon.im/

🏛 A solidity temple for gas optimized and super efficient contracts. Built with Foundry's forge.

Solidity contracts to enable limit orders on Sushiswap

Implement upgradeable bep20 contract

Core smart contracts for the Pendle Protocol.

Time-Weighted Average Price orders on any DEX

🏛 A solidity temple for gas optimized and super efficient contracts. Built with Foundry's forge.

Reference Implementation of EIP-4907 "Rental NFT, ERC-721 User And Expires Extension"