We architect and build bespoke blockchain solutions from the ground up. Our full-cycle development delivers secure, audited smart contracts, custom consensus mechanisms, and high-performance node infrastructure tailored to your exact business logic and compliance needs.
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Rollup Fraud Proof System Audit
Comprehensive security review and adversarial testing of your Optimistic Rollup's fraud proof mechanism, challenge game logic, and sequencer behavior to validate economic security.
Chainscore © 2026
overview
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
End-to-end blockchain development for secure, scalable, and production-ready applications.
From concept to mainnet, we handle the entire stack so your team can focus on product and growth.
- Core Protocol & Smart Contract Development: Custom
Solidity/Rustcontracts,ERC-20/ERC-721/ERC-1155tokens, DeFi primitives, and governance systems with formal verification and audit support. - Layer-1/Layer-2 Solutions: Private, consortium, or public chain development. Specialized
EVM-compatible sidechains,zk-rollup, andoptimistic rollupimplementations for scalability. - Node & Validator Infrastructure: Dedicated, geo-distributed node clusters with 99.9% uptime SLAs, automated monitoring, and disaster recovery protocols.
- Integration & Tooling: Seamless APIs,
Web3.js/ethers.jsfront-end integration, blockchain explorers, and custom developer tooling for your ecosystem.
key-features-cards
GUARANTEED OUTCOMES
What Our Fraud Proof Audit Delivers
Our audit is a technical deep-dive that delivers actionable security and performance improvements, not just a compliance report. We focus on the specific risks and optimizations that matter for production rollups.
01
Comprehensive Security Analysis
We conduct a line-by-line review of your fraud proof logic, challenge mechanism, and state transition functions. Our audit identifies critical vulnerabilities like reentrancy, front-running, and logic flaws before they impact your mainnet.
100%
Code Coverage
OWASP
Standards
02
Gas & Performance Optimization
We benchmark and optimize the computational cost of your fraud proof verification. Our reports provide specific recommendations to reduce L1 verification gas costs by up to 40%, directly lowering operational expenses for your validators and users.
≤ 40%
Gas Reduction
Sub-second
Verification Target
03
Formal Verification Report
For critical components, we employ formal methods to mathematically prove the correctness of your state transition logic against your specification. This provides the highest level of assurance for the core dispute resolution engine.
K Framework
Methodology
Core Logic
Scope
05
Architecture & Upgrade Review
We assess the long-term viability of your fraud proof system design, including upgrade mechanisms, pause functionality, and governance risks. Our report includes a roadmap for future-proofing your architecture against protocol changes.
EIP-4844
Future-Proofing
Risk Mitigation
Focus
06
Executive Summary & Remediation Plan
Get a clear, prioritized action plan with severity ratings (Critical, High, Medium) and detailed remediation steps. We provide direct support to your engineering team to ensure all findings are properly addressed and verified.
< 72h
Response Time
Guaranteed
Re-audit
benefits
SECURITY FIRST
Why a Specialized Fraud Proof Audit is Critical
Rollup security is only as strong as its fraud proof mechanism. A generic smart contract audit is insufficient for the complex, stateful logic of a fraud proof system. Our targeted audit assesses the entire challenge-response lifecycle to prevent catastrophic financial loss.
01
Prevent Invalid State Finalization
We rigorously test the sequencer's ability to submit fraudulent state roots and your system's capacity to successfully challenge them. This prevents the permanent acceptance of incorrect transactions, protecting user funds.
100%
Challenge Path Coverage
Zero-Day
Vulnerability Detection
02
Optimize Dispute Resolution Logic
Our experts analyze the multi-round bisection game, verifying the correctness of the state transition logic at every step. We ensure challenges resolve efficiently, minimizing delays and costly arbitration gas fees.
< 7 days
Max Dispute Time
60%
Avg. Gas Cost Reduction
03
Secure Data Availability Assumptions
We verify that your fraud proofs correctly depend on data being available on L1. This includes auditing the data commitment scheme and the logic for handling unavailable data, a common failure point.
Ethereum Calldata
Verified Compatibility
100%
Data Root Integrity
04
Validate Economic Incentives & Slashing
A broken incentive model can render fraud proofs useless. We audit bond sizes, slashing conditions, and reward distributions to ensure it's always economically rational for honest validators to participate.
Nash Equilibrium
Game Theory Analysis
> Bond Value
Slashing Guarantee
05
Ensure L1/L2 Bridge Security
Fraud proofs are the primary security guard for your bridge. We audit the interaction between the bridge contract and the verification contract, preventing stolen funds from being withdrawn to L1.
Cross-Layer
Integration Audit
Zero Withdrawal
Risk on Failure
Choose Your Security Level
Comprehensive Audit Scope & Deliverables
Our tiered audit packages for rollup fraud proof systems, designed to match your project's stage and risk profile.
| Audit Component | Starter | Professional | Enterprise |
|---|---|---|---|
Core Fraud Proof Logic Audit | |||
Smart Contract & Circuit Review | |||
Formal Verification (Key Properties) | |||
Economic & Incentive Analysis | |||
Integration & Upgrade Path Review | |||
Detailed Remediation Report | |||
Post-Audit Consultation (Hours) | 2 | 8 | Unlimited |
Priority Response SLA | 72h | 24h | 4h |
Re-Audit of Critical Fixes | |||
Ongoing Monitoring & Alerts | |||
Estimated Timeline | 2-3 Weeks | 3-4 Weeks | 4-6 Weeks |
Starting Price | $25,000 | $75,000 | Custom |
how-we-deliver
PROVEN FRAMEWORK
Our Adversarial Testing Methodology
We simulate real-world attacks to expose critical vulnerabilities in your fraud proof system before they can be exploited. Our methodology goes beyond automated scanning to deliver actionable security insights.
01
State Transition Attack Simulation
We manually craft and execute invalid state transitions to test the core logic of your fraud proof verification. This identifies logic flaws that could allow invalid blocks to be finalized.
100%
Coverage
> 50
Attack Vectors
02
Data Availability Challenge Testing
We simulate scenarios where sequencers withhold or corrupt transaction data, rigorously testing your system's ability to detect and challenge missing data through validity proofs.
100%
Coverage
< 1 sec
Detection Time
03
Economic & Incentive Exploit Analysis
We model adversarial staking strategies, griefing attacks, and incentive misalignments to ensure your slashing conditions and bond mechanisms are economically sound and Sybil-resistant.
100%
Coverage
Zero-Day
Prevention
04
L1/L2 Bridge & Withdrawal Attack Vectors
We target the message-passing layer and withdrawal mechanisms, testing for reentrancy, race conditions, and signature verification flaws that could lead to fund loss.
100%
Coverage
24/7
Monitoring
05
Adversarial Node & Network Testing
We deploy malicious validators and simulate network partitions, latency attacks, and censorship to stress-test your fraud proof system's liveness and resilience under Byzantine conditions.
100%
Coverage
> 33%
Fault Tolerance
Why a Specialized Rollup Audit is Critical
Chainscore Audit vs. Generic Smart Contract Review
A fraud proof system is the security backbone of your rollup. A generic audit often misses the complex, stateful logic unique to optimistic or zk-rollups. This table highlights the critical differences.
| Audit Focus | Generic Smart Contract Review | Chainscore Rollup Fraud Proof Audit |
|---|---|---|
Fraud Proof Mechanism Analysis | ||
Sequencer & Challenger Role Security | Surface-level | Deep State & Incentive Modeling |
Withdrawal & Bridge Vulnerability Review | Basic | Comprehensive (Mainnet L1 & L2) |
State Transition & Data Availability Checks | ||
Formal Verification of Critical Paths | Rarely Included | Standard for Core Logic |
Gas Optimization for L1 Dispute Costs | ||
Team Expertise | General Solidity Auditors | Ex-rollup Protocol Engineers |
Average Time to Report | 2-3 weeks | 4-6 weeks (in-depth) |
Typical Project Cost | $10K - $30K | $50K - $150K+ |
Post-Audit Support & Monitoring | Limited | Optional SLA with 24/7 Alerting |
Technical Deep Dive
Fraud Proof Audit FAQs
Get clear, specific answers to the most common questions CTOs and engineering leads ask when evaluating a rollup fraud proof system audit.
We employ a hybrid methodology combining formal verification, adversarial simulation, and manual code review. Our process includes: 1) Specification Analysis – verifying the fraud proof logic against the rollup's state transition rules. 2) Formal Verification – using tools like K-Framework to prove correctness of critical components. 3) Adversarial Testing – simulating malicious sequencer and validator behavior to test edge cases. 4) Gas & Economic Analysis – ensuring proof submission costs are viable and incentive mechanisms are sound. This multi-layered approach has secured over $2B in bridged assets across our client base.
ENQUIRY
Get In Touch
today.
Our experts will offer a free quote and a 30min call to discuss your project.
NDA Protected
Confidentiality24h Response
Time to ValueDirectly to Engineering Team
No Sales Fluff10+
Protocols Shipped
$20M+
TVL Overall