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Free 30-min Web3 Consultation
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Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

CosmWasm Smart Contract Fuzzing

We deliver targeted, adversarial fuzzing for CosmWasm smart contracts, uncovering edge-case vulnerabilities in IBC packet handling, cross-contract execution, and gas consumption that static analysis misses.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built by Web3 experts to power your protocol.

We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process is built on audited code patterns and gas-optimized logic to ensure reliability and cost-efficiency from day one.

  • Full Lifecycle Support: From initial design and Solidity/Rust development to deployment, verification, and ongoing maintenance.
  • Security-First: Every contract undergoes internal audits and is built with OpenZeppelin standards, preparing you for formal third-party audits.
  • Protocol Specialization: Expertise in ERC-20, ERC-721, ERC-1155, custom staking mechanisms, governance modules, and DeFi primitives.

We deliver battle-tested contracts that reduce your time-to-market and mitigate critical security risks.

Our engineers focus on clear, maintainable code and comprehensive documentation, ensuring your team can own and extend the codebase. We prioritize gas efficiency to minimize user transaction costs and upgradeability patterns to future-proof your protocol against evolving market needs.

key-features-cards
COSMWASM-SPECIFIC SECURITY

Specialized Fuzzing for the Cosmos Stack

Our fuzzing service is engineered for the unique architecture of the Cosmos SDK and CosmWasm, uncovering vulnerabilities that generic tools miss. We deliver actionable security reports to harden your contracts before mainnet deployment.

01

CosmWasm VM Integration

Fuzzing engine directly integrates with the CosmWasm Virtual Machine, testing contract logic under real execution conditions. This catches state transition bugs and gas estimation errors specific to the Cosmos ecosystem.

100%
VM Coverage
IBC-Ready
Protocol Support
02

IBC & Cross-Chain Attack Vectors

Proactively tests for vulnerabilities in Inter-Blockchain Communication (IBC) packet handling, channel security, and cross-chain state validation. We simulate malicious counterparties and packet forgery attempts.

20+
IBC Test Cases
Channel Spoofing
Attack Simulation
03

Governance & Staking Logic

Rigorously fuzz custom governance proposals, validator slashing conditions, and delegation logic. We identify edge cases in reward distribution and parameter change execution that could lead to fund loss or consensus issues.

Slashing Bugs
Primary Target
Proposal Flood
Stress Test
04

Custom Message & Query Fuzzing

Generates malformed, out-of-order, and high-frequency ExecuteMsg and QueryMsg payloads to break your contract's input validation and error handling, ensuring resilience against adversarial users.

Invalid Signatures
Payload Type
>10k
Msg Variants
05

State Corruption & Storage Attacks

Targets CosmWasm's key-value storage model with fuzzed read/write sequences to find race conditions, storage corruption, and unauthorized state access vulnerabilities that could compromise contract data.

Storage Keys
Attack Surface
Race Conditions
Critical Find
06

Comprehensive Audit-Ready Report

Receive a detailed technical report with reproducible test cases, severity ratings, and patched code examples. Our findings are formatted to streamline integration with formal audit teams like Oak Security or Informal Systems.

CW* Standards
Compliance Checked
POC Code
Included
EXPLORE
benefits
OUR METHODOLOGY

Deploy Secure, Resilient Contracts

We move beyond basic testing to deliver production-ready CosmWasm contracts with mathematically-proven security guarantees and battle-tested resilience.

01

Property-Based Fuzzing

We automatically generate and execute thousands of adversarial transaction sequences to uncover edge cases and invariant violations that unit tests miss.

10k+
Test Cases
> 95%
Branch Coverage
EXPLORE
02

Formal Verification Linting

Our static analysis integrates with tools like cosmwasm-check to enforce security properties and coding standards before a single line is executed.

0
Critical Issues
CWE Mapped
Vulnerabilities
EXPLORE
03

Adversarial Simulation

We model sophisticated attack vectors—front-running, griefing, economic exploits—within a forked Cosmos SDK testnet environment to stress-test contract logic.

50+
Attack Vectors
Real Gas
Cost Analysis
EXPLORE
04

Upgrade Path Validation

Every contract migration and admin function is rigorously tested to prevent state corruption, privilege escalation, and migration failures post-deployment.

100%
State Integrity
Rollback Safe
Migrations
EXPLORE
Choose the right level of security for your CosmWasm project

Comprehensive Fuzzing Audit Packages

Compare our tiered fuzzing audit packages, designed to provide escalating levels of coverage, support, and assurance for your CosmWasm smart contracts.

Audit FeatureStarterProfessionalEnterprise

Core Fuzzing Audit

Automated Property Testing

50 properties

200+ properties

Unlimited properties

Manual Code Review

Limited

Comprehensive

Comprehensive + Threat Modeling

Mutation & Invariant Testing

Gas Optimization Report

Remediation Support

1 round

Unlimited rounds

Dedicated engineer

Final Security Report

Standard

Detailed with PoC

Executive & Technical versions

Post-Audit Consultation

4 hours

Ongoing

Response Time SLA

72h

24h

4h

Estimated Timeline

1-2 weeks

2-3 weeks

Custom

Starting Price

$8,000

$25,000

Custom

process-walkthrough
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process is built for security-first deployment and long-term maintainability.

  • From Audit to Mainnet: Full lifecycle support from specification and Solidity/Rust development to third-party audits (OpenZeppelin, CertiK) and gas-optimized deployment.
  • Standard & Custom Logic: Build compliant ERC-20, ERC-721, and ERC-1155 tokens or bespoke DeFi primitives, DAO governance, and cross-chain bridges.
  • Guaranteed Outcomes: We deliver production-ready code in 2-4 weeks with 100% test coverage and comprehensive documentation.
Expert Answers for Technical Decision-Makers

CosmWasm Fuzzing FAQs

Get clear, technical answers to the most common questions about our CosmWasm smart contract fuzzing service, designed for CTOs and lead developers evaluating security partners.

We employ a multi-layered fuzzing approach. Our process begins with property-based fuzzing using custom harnesses to test invariants and edge cases. This is followed by differential fuzzing against a known-good reference implementation and coverage-guided fuzzing (using libFuzzer/AFL++) to maximize code path exploration. We integrate with your CI/CD pipeline and provide detailed reports with reproducible test cases, severity scores, and remediation guidance.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team