Code4rena
Code4rena (C4) is a competitive audit platform that crowdsources smart contract security reviews through time-limited audit contests. Security researchers (called wardens) compete to find vulnerabilities in protocol code, with rewards distributed based on the severity and uniqueness of findings. The platform has facilitated audits for major DeFi protocols and consistently surfaces critical bugs through its competitive model. Code4rena combines the breadth of crowdsourced review with a structu...