// GLOSSARY -- SECURITY & COMPLIANCE

What is Contract Verification?

1 min read Updated

Contract verification is the process of publicly linking a smart contract's deployed bytecode to its human-readable source code on a block explorer — enabling anyone to audit the code and verify the contract's behavior.

WHY IT MATTERS

Verified contracts are transparent contracts. When source code is verified on Etherscan, anyone can read the Solidity code, understand what the contract does, and compare it to the deployed bytecode. Unverified contracts are opaque — you're trusting black-box bytecode.

Verification is a basic trust signal. Serious projects verify their contracts. Unverified contracts should be treated with suspicion — they may contain hidden functions, backdoors, or unexpected behavior.

Verification also enables: read/write interaction through the explorer, automated analysis tools, and easier auditing. It's a prerequisite for professional security review.

FREQUENTLY ASKED QUESTIONS

How do I verify a contract?
Submit source code and compiler settings to Etherscan (or the relevant explorer). The explorer compiles the source and verifies the bytecode matches the deployed contract. Hardhat and Foundry have automated verification plugins.
Does verification guarantee safety?
No — it guarantees transparency. You can see the code, but the code may still have bugs. Verification enables auditing; it doesn't replace auditing.
What about proxy contracts?
Both the proxy and implementation should be verified. The explorer should show the implementation address so you can read the actual logic contract.

FURTHER READING

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