✨ New!✨  C4 Cosmos league. First contest $100k+ audit of Gravity Bridge. Read more »

Hack DeFi. Compete. Get paid.

We’re creating a community-driven approach to competitive smart contract audits. Join our open organization.

Wardens

Hunt exploits in the smart contracts of decentralized protocols.

Sponsors

Create bounty pools to attract wardens to audit your project.

Judges

Allocate bounty pools to wardens based on performance.

Sushi

~$200,000 (16,000 Sushi) Sushi Trident contest phase 1

Community-driven DeFi platform

9 days + 01 20 58 until contest ends
View ContestSubmit Finding
defiProtocol

$50,000 worth of ETH defiProtocol contest

Automated portfolio protocol.

2 days + 01 20 58 until contest ends
View ContestSubmit Finding
Wild Credit

$50,000 USDC Wild Credit contest

Decentralized lending protocol with isolated lending pairs.

7 day contest

2 days + 01 21 58 until contest starts
PoolTogether

$100,000 USDC PoolTogether v4 - PREVIEW

Preview Mode: Learn and discuss before the contest starts!

7 day contest

9 days + 01 21 58 until preview starts
Sushi

~$100,000 (8,000 Sushi) Sushi Trident contest phase 2

Community-driven DeFi platform

7 day contest

9 days + 01 21 58 until contest starts
PoolTogether

$100,000 USDC PoolTogether v4 contest

A protocol for no loss prize savings on Ethereum

7 day contest

16 days + 01 21 58 until contest starts
Tempus Finance

$50,000 USDC Tempus Finance contest

Trustless secondary markets on yield.

7 day contest

23 days + 01 21 58 until contest starts
AdEx

$25,000 USDC AdEx contest

Decentralized solution for digital advertising that improves transparency and protects user privacy.

3 day contest

24 days + 01 21 58 until contest starts
The crowd goes wild

This result far exceeded previous experiences I’ve had with 2–4 week-long audits by individual companies. I highly recommend the Code 423n4 competitive audit approach for anyone starting a new project.

LSDan ElasticDAO

Overall, I have to say you guys have some very smart folks and some of the findings identified are quite good! Definitely a much better experience than the traditional audit we had gone through.

JasonFairside

Want to give a massive shout out to all the wardens that took part in the Reality Cards contest last week- you guys found some really amazing stuff- so good that we're considering doing a second round! 🤣thanks so much guys!

AndrewReality Cards

C4 contests attract new, unique and complicated projects so it is a perfect learning opportunity... Here projects seriously invest in their security so it is always a motivation to try my best to find bugs in their code.

Pauliax/ThunderC4 Warden
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