Smart Contract Similarity Scanner
Compare a contract address or source code against existing smart contracts to identify similar implementations, reused code, and potential contract clones.
Similarityscan helps developers, researchers, and Web3 users quickly discover contracts that share similar source code.
How It Works
Find Similar Smart Contracts in Three Steps
Smart contract transactions often display encoded method selectors rather than human-readable function names.
1. Enter an Address or Source Code
Select the blockchain and enter a verified smart contract address, or paste the source code you want to analyse.
2. Run the Similarity Analysis
The Similarityscan engine compares the submitted contract with existing smart contract sources and identifies matching or closely related code.
3. Review Similar Contracts
View a list of contracts with similar source code and explore the results for further investigation.
Detect Reused and Similar Smart Contract Code
Smart contracts are often created by adapting existing code, using common templates or forking previously deployed protocols. While code reuse is common in Web3 development, understanding where code originated and how closely it resembles other contracts can provide useful context.
Similarityscan allows you to compare a contract address or source code against existing smart contracts. The tool highlights similar implementations so you can investigate potential clones, reused components and shared contract structures.
Why Use a Smart Contract Similarity Scanner?
Identify Potential Contract Clones
Discover whether a smart contract closely resembles contracts that have already been deployed.
Support Security Research
Use similarity results as an additional data point when researching unfamiliar tokens, protocols or blockchain projects.
Investigate Code Origins
Find contracts that may share the same templates, libraries, functions or underlying architecture.
Review Reused Code
Understand whether developers have reused existing source code and identify related contracts that may require further investigation.
Accelerate Due Diligence
Quickly gather additional context before interacting with or reviewing a smart contract.
Who Is Similarityscan For?
Smart Contract Developers
Check whether your contract resembles existing deployments and review how similar implementations are structured.
Security Researchers
Discover related contracts and investigate whether vulnerabilities or risky patterns may appear across similar codebases.
Web3 Investors and Analysts
Gather additional information about a project's smart contracts as part of a broader due diligence process.
Blockchain Users
Explore the origins and similarities of a contract before interacting with it.
Crypto Projects
Monitor contracts that may reuse or replicate parts of your project's source code.
Similar Code Does Not Always Mean Secure Code
Similarity analysis can help you identify related contracts and reused implementations, but it does not provide a complete smart contract security assessment.
Use Cyberscan AI to analyse your smart contract for vulnerabilities, risky logic and insecure implementation patterns.
Frequently Asked Questions
A smart contract similarity scanner compares a contract address or source code with other available smart contracts. It identifies contracts that share similar code, functions, structures or implementation patterns.
Go Beyond Similarity Analysis
Identify vulnerabilities, review security findings and receive AI-powered remediation guidance with Cyberscan AI.
