# Sourcify — Verified Source Code for Every Contract
Etherscan verification is centralized. Sourcify stores verified source code on IPFS for decentralized access.
Why Sourcify
- Decentralized: Source code on IPFS, not a single server
- Full match: Verifies metadata hash for exact compilation match
- Multi-chain: Supports 100+ EVM chains
- Open source: Anyone can run a node
Verify with Foundry
forge verify-contract \
--verifier sourcify \
--chain-id 1 \
0xYourContract \
src/MyContract.sol:MyContract
Verify with Hardhat
// hardhat.config.js
module.exports = {
sourcify: { enabled: true },
};
npx hardhat verify --network mainnet 0xYourContract "arg1"Full Match vs Partial Match
- Full match: Exact compiler settings, metadata, source. The bytecode metadata hash matches perfectly.
- Partial match: Same runtime bytecode, but metadata may differ.
Always aim for full match. It guarantees the exact source that was compiled.
CI/CD Integration
- name: Verify on Sourcify
run: forge verify-contract --verifier sourcify --chain-id 1 $CONTRACT src/MyContract.sol:MyContract
Verify on both Etherscan AND Sourcify for maximum transparency.