Secure your smart contracts.
Top auditors compete to keep high severity bugs out of production.
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1,365
unique high-severity vulns
25,152
unique findings
10,409+
registered wardens
449
audits completed
Your security partners across the development lifecycle.
Have the best security researchers give deep analysis with a consultative Zenith audit. Then simulate real conditions, with hundreds of auditors competing to find vulnerabilities. With Code4rena, you can deploy to mainnet with peace of mind.
Competitive audit
We invented the format that disrupted the web3 industry. Find out why top protocols trust C4.
Zenith
Zenith assembles auditors with proven track records to secure your project.
Leading crypto projects choose Code4rena
Active audits

Currently finding the highest-severity vulnerabilities for:

10 Feb 8:00 PM - 24 Feb 8:00 PM UTC

Initia Cosmos

A network for interwoven rollups.

Cosmos

EVM

GO

$80,000 in USDC

Upcoming audits
19 Feb 8:00 PM - 19 Mar 8:00 PM UTC

Stealth Project by Textile

Intelligence network for AI agents

EVM

Rust

Solidity

$100,000 in USDC

24 Feb 8:00 PM - 17 Mar 8:00 PM UTC

Blend V2 Audit + Certora Formal Verification

A liquidity protocol primitive built on Stellar.

Stellar

Rust

$125,000 in USDC

4 Mar 8:00 PM - 7 Mar 8:00 PM UTC

Audit 439 Invitational

EVM

Solidity

$25,000 in USDC

4 Mar 8:00 PM - 11 Mar 8:00 PM UTC

Silo Finance

Isolated lending markets on Ethereum.

EVM

Solidity

$50,000 in USDC

19 Mar 8:00 PM - 2 Apr 8:00 PM UTC

Virtuals Protocol

Co-ownership of AI agents in entertainment and gaming

EVM

Solidity

$60,000 in USDT

Don’t just take our word for it.

"There are many facets to correct and secure code: incentive design, bug-free code, knowledge of protocols, ERC standards, mathematics and more. Every protocol is different. Code4rena fosters an open security community whose broad skillset can fit the needs of any audit. It's the best value in smart contract security."

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Co-founder of PoolTogether

"One of the things I enjoy most about competing on @code4rena is getting to read lots of code and see new techniques in the wild."

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Code4rena Warden

"Code4rena delivered an exceptional audit experience. Their efficient processes, clear communication, and highly competent judges stood out. The overall process was smooth and professionally managed. The platform's ability to attract skilled participants and facilitate meaningful discussions made it an invaluable choice for smart contract security needs."

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Co-founder & CTO of Phi

"Code4rena is a terrific way to quickly get a lot of talented eyes on your smart contract code, and to receive valuable feedback from security researchers. C4 is neither a traditional “audit”, nor a bug bounty, but rather occupies a unique niche, making it a valuable addition to the smart contract security toolbox."

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EigenLayer

"With C4, it’s like an order of magnitude improvement over other ways of doing audits. The number of bugs, the degree to which I was convinced people had looked into the code and found everything to be found, was much higher due to the engagement, the variety of things reported, and the incentive mechanism."

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Code4rena Sponsor

"These @code4rena payouts are ridiculous. I'm tempted to drop everything and tunnel vision that"

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Code4rena Warden

"We greatly enjoyed our @code4rena experience - here's why it is the best value in auditing: quick spin-up time, flexible bounty awards, open nature means more eyes on your code, by our count ~10x more vs traditional audit shops, helpful community of wardens and judges"

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Co-founder of Rubicon

"C4 wardens > any single audit shop IMO"

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Co-founder of Rubicon

"Just went through the latest @code4rena audit report of the @blur_io exchange. This report is a great example of why audits are so important - wardens were able to discover a high risk exploit that would've allowed sellers to steal funds from buyers."

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Code4rena Warden

"I think @code4rena is a 10x improvement on smart contract audits. They're timely, have transparent pricing and source a lot of great developer attention."

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Nouns Builder

"Thank you to all of the wardens who have been working on our code base. So many great questions and so many many of them. I hope you'll all come try it out when we're live and critique the user experience from top to bottom. 10/10 would work with y'all again."

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androolloyd
Astaria

"Our experience with Code4rena has been great. After a very short lead time and smooth onboarding, many experienced security researchers analyzed our code in depth and provided valuable feedback. In addition to security-related findings, we also received useful optimization suggestions."

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Code4rena Sponsor

"After grinding for 14 months I finally reached my goal of being the first to cross 1M$ on the @code4rena leaderboard. Thanks to everyone involved, this has been very fun, lucrative, and I learned a lot by seeing other wardens' vulnerabilities that I missed."

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Code4rena Warden

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