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Formal Verification for Web3 Security
Mathematically prove your smart contract and blockchain protocol works as intended. No more best effort reviews, leaving undiscovered vulnerabilities. CertiK’s pioneering technique of using formal verification as part of its smart contract audits helps uncover all possible vulnerabilities in your code.
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Advanced Formal Verification Spotlights

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zkWasm developed by DelphiusLab is the world’s first general-purpose zero-knowledge proof virtual machine that has been formally verified. CertiK discovered two critical bugs during the work.
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The Open Network (TON) has its Masterchain contract, the top layer of its chain consensus, formally verified by CertiK. Two subtle bugs were discovered during the work.
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HyperEnclave by Ant Group is a cross-platform trusted execution environment. Its core components have been formally verified by CertiK. The work has been accepted by ASPLOS'24 conference.
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Cosmos SDK is the world's most popular framework for building application-specific blockchains. CertiK formally verified its standard Bank module, a first for L1 modular frameworks.
Better security for blockchains and smart contracts
Mathematically proven, effective auditing process for smart contracts and blockchain protocols, delivering more vulnerabilities than what the human eye can find.
Scale
Scale
Common Security Properties for popular smart contracts such as ERC-20 and ERC-721 have been automatically verified for hundreds of projects during their auditing.
Precision
Precision
Advanced custom security and correctness properties, such as the increase-K property of AMM, have been specified and proved precisely for complex smart contracts in addition to their regular auditing.
Coverage
Coverage
In addition, CertiK also formally verifies other blockchain building blocks such as consensus protocol, etc. Basic systems infrastructure, such as Enclave Hypervisor, can also been formally verified.
Want to Know More about Custom Formal Verification as Part Of Code Auditing?

All Audit Processes Are Not Created Equal

Depending on the methodology, and experience, smart contract and blockchain protocol audits and process involved can yield different results. Having completed thousands of audits using highly accurate formal verification processes, it's no wonder CertiK is a leader in the industry.

Manual Code Review

90
Most Vendors and CertiK
A human review to try to spot errors. This is very flexible, but it’s best-effort, as you can never be sure you found all errors.

Automatic Verification

95
Few Vendors and CertiK
Automatic verification of certain properties and issues e.g., reentrancy, or properties of ERC20 contracts.

Custom Formal Verification

100
CertiK
Security specialists create machine-readable specification that are mathematically verified by CertiK’s Custom Formal Verification system.
Why CertiK?

Why CertiK?

Our in-depth evaluations of Web3 projects, exchanges, and wallets promote transparency and reliability in the industry. Discover how integrating CertiK's Security Score API can enhance the security and trustworthiness of your exchange or data services.

Benefits of CertiK Custom Formal Verification

Tailored to the native languages running in your project
Highly customized for the features of your project, protocol, or virtual machine
Developed by a world-class team of academics, researchers, and engineers
Interested to Know More About How Custom Formal Verification Helps in Effective Auditing?