Arbitrum Contract Audits
Secure and optimize your Arbitrum smart contracts with a detailed audit from Codeum. Protect your assets and ensure scalability in one of the most efficient Ethereum Layer-2 solutions.
Why Audit Arbitrum Smart Contracts?
Arbitrum is the leading Ethereum Layer-2 scaling solution, using optimistic rollup technology to provide 10-50x lower gas costs while inheriting Ethereum's security. With billions of dollars in TVL (Total Value Locked), Arbitrum has become the go-to platform for DeFi protocols seeking scalability. However, L2-specific considerations — including cross-chain messaging, sequencer dependencies, and gas price differences — create unique security challenges that require specialized audit expertise.
- Detect vulnerabilities such as logic flaws, overflow errors, and reentrancy issues.
- Ensure your contracts perform as intended on the Arbitrum Layer-2 network.
- Optimize your code for cost-efficiency and scalability.
Arbitrum-Specific Security Considerations
Arbitrum's optimistic rollup architecture introduces unique security considerations that differ from Ethereum mainnet deployments:
Cross-Chain Messaging (L1 ↔ L2)
Communication between Ethereum and Arbitrum involves a 7-day challenge period for withdrawals. Contracts that rely on cross-chain messaging must account for timing delays and potential message failures.
Sequencer Dependencies
Arbitrum's sequencer provides fast transaction ordering but introduces a liveness assumption. Contracts that depend on precise transaction ordering or timestamps must account for sequencer behavior.
Gas Price Differences
L1 and L2 gas prices differ significantly. Contracts that estimate gas costs or use gas-dependent logic may behave differently on Arbitrum compared to Ethereum mainnet.
Arbitrum vs Ethereum Opcodes
While Arbitrum is EVM-equivalent, some opcodes behave differently. The L1 block number, difficulty opcode, and certain precompile addresses return Arbitrum-specific values.
Our Audit Process
Step 1: Manual Code Review
A thorough examination of your smart contract logic to uncover potential issues.
Step 2: Automated Testing
Utilize advanced tools to identify vulnerabilities and ensure compliance with Arbitrum standards.
Step 3: Detailed Reporting
Provide actionable insights and fixes for any issues found during the audit process.
Why Choose Codeum?
Codeum specializes in securing smart contracts across diverse ecosystems, including Arbitrum. Our tailored audits ensure that your projects are robust, scalable, and secure.
- Industry experts with deep understanding of Arbitrum's infrastructure.
- Clear, concise reports with actionable steps to fix vulnerabilities.
- Reliable post-audit support to ensure safe deployment.
Other Chains We Audit
Codeum provides comprehensive audit services across all major blockchain networks:
Ethereum Audit
The foundation of DeFi. Solidity security for ETH projects.
Polygon Audit
PoS and zkEVM security for Polygon projects.
BSC Audit
Binance Smart Chain security for BEP-20 tokens.
Avalanche Audit
High-performance blockchain with subnets.
Solana Audit
Rust and Anchor program security analysis.
Tron Audit
TRC-20 and TVM smart contract security.
Frequently Asked Questions
What makes Arbitrum audits different from Ethereum audits?
While Arbitrum is EVM-equivalent, it has unique characteristics including different gas pricing, cross-chain messaging delays, sequencer dependencies, and specific opcode behaviors. Our auditors account for all L2-specific factors in addition to standard smart contract vulnerabilities.
Do you audit Arbitrum Nova contracts?
Yes, we audit contracts on both Arbitrum One (the main rollup) and Arbitrum Nova (the AnyTrust chain optimized for gaming and social applications). Each has different security assumptions that we account for in our audits.
How do you handle cross-chain contract interactions?
We review all L1-to-L2 and L2-to-L1 message passing, including deposit/withdrawal logic, bridge contract interactions, and any assumptions about message delivery timing or ordering.
Can you audit contracts that deploy on both Arbitrum and Ethereum?
Yes, we frequently audit multi-chain deployments. We review each chain's deployment independently and also assess the cross-chain interactions and consistency between deployments.
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Take the first step towards a safer, more reliable blockchain project with our expert services.
