Polkadot Smart Contract
Audit Company

Your custom pallet is powerful. Make it impenetrable.

Polkadot projects succeed when their foundations are solid. Our audits reveal how stable your codebase truly is and what needs fine-tuning before it goes public.

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Polkadot Smart Contract Audit Company

Challenges we solve

Struggling with Polkadot's runtimes and VMs?

We trace how your ink! contracts, EVM components, and pallets interact in practice, testing the connections that often fail when data moves between runtimes.

Not sure your precompiles or extensions are secure?

We review how each bridge interacts with the runtime and what permissions it truly has. If a call reaches deeper than intended, we flag it and ensure every precompile stays within its lane.

Experiencing issues with weights or storage deposits?

We recreate real user activity to uncover hidden weak spots. By comparing expected and actual costs, we show how a small miscalculation can turn into a denial of service or a frozen balance.

Nervous about what could go wrong with XCM messages?

We simulate unpredictable cross-chain scenarios and push your setup until it proves stable. What you get is an XCM setup that keeps control even when everything else starts to fail.

Unsure if your ink! setup is production-ready?

We thoroughly examine your ink! environment by checking cargo settings, verifying deterministic builds, and uncovering silent linter issues that could slip into production.

Wondering if your runtime logic could be your weakest link?

We read Substrate logic with focus on what's implied, not just what's in the code. Our team tests each governance path and origin call to ensure your runtime enforces rules as intended.

Polkadot smart contract audit services

Our audits focus on layers unique to the Polkadot ecosystem to secure your network by examining runtime logic and communication paths that ensure system integrity.

Runtime module inspection

Examine how your Substrate runtime responds under different execution paths. The audit looks at the logic behind hooks and origins to reveal hidden permission gaps or unsafe upgrade mechanics that could be abused later.

Custom precompile audit

Investigate how your precompiles interact with the runtime. The process isolates risky permission flows and exposes any call that steps beyond its intended boundary.

Weight model calibration

Run controlled network tests to see how your weight configuration performs under load. The results highlight discrepancies between predicted and actual execution costs, showing exactly where resource issues may arise.

Cross-chain message verification

Test the durability of your XCM communication when parachains exchange data. The audit uncovers weaknesses in routing and ensures that your message filters stay effective during unstable network conditions.

ink! contract build assurance

Review your ink! environment from setup to deployment. The inspection verifies cargo settings, checks build reproducibility, and exposes linter issues that could compromise stability.

Audit-ready Polkadot solutions for every project stage

Every Polkadot project evolves through multiple layers. Our audit approach adapts to each phase, securing your system's logic and communication flows.

Parachain DeFi protocols

We audit DeFi platforms built on Polkadot parachains to confirm that asset movements and yield logic work as intended. The audit focuses on transaction reliability and the security of cross-chain fund flows.

NFT & asset tokenization systems

Our team examines the logic behind token minting, trading, and ownership tracking across Polkadot-based marketplaces to verify proper integration with parachain runtimes.

On-chain governance frameworks

We examine governance modules built with Substrate pallets to see how proposals are created, voted on, and executed, ensuring each action follows the right permissions and that upgrade paths stay fully secured.

XCM & cross-network validation

We analyze how your solution manages cross-chain communication through XCM or custom bridge frameworks. The audit confirms that messages are authenticated, assets move securely, and routing logic remains stable.

Runtime upgrade assurance

We validate the safety of runtime upgrades and configuration changes to keep updates predictable and governance under full control while ensuring continuous network operation.

Case studies

The impact of PixelPlex work is proven by real projects that show how we solve unique business challenges with custom solutions.

Blockchain ecosystem for a DeFi platform

Blockchain

Smart contract
dApp
DeFi protocol

FinTech

A Polkadot-based blockchain ecosystem that became a core part of the Rio DeFi platform, with 13 smart contracts deployed.

Substrate-based fork for Rio Chain
EVM customization & integration
Web3 browser extension
Web & mobile crypto wallet development
13 smart contracts deployed

Smart contract audit for an NFT marketplace

Blockchain

Smart contract
dApp

NFT

Marketplace

An Ethereum-based NFT marketplace audit that enhanced platform security and optimized transaction flows between creators, buyers, and sellers.

20+ issues fixed in the original code
Marketplace-exclusive NFT resale feature
Chainlink Oracle integration
Smart contract migration tool
Third-party audit passed with zero issues

The illustration of Smart contract audit for an NFT marketplace project

TON blockchain ecosystem enhancement

Blockchain

Smart contract
dApp
EVM–TVM migration

FinTech

A TON ecosystem enhancement that improved smart contract performance, streamlined migration, and strengthened developer resources and SEO visibility.

TON's infrastructure optimization
EVM–TVM migration framework
Developer documentation updates
Demo dApp creation
SEO performance boost

The illustration of TON blockchain ecosystem enhancement project

Clients' reviews

From first prototype to large-scale deployment, our clients trust our technical expertise and proactive approach to bring their visions to life.

PixelPlex is very professional and always readily available

Adam Greenwood

Co-Founder & COO, Uforika

Thanks to PixelPlex’s work, the client now has a fully operational wallet prototype. The team has delivered on time and solved bugs promptly. They’re also very communicative, professional, responsive, and available, leveraging communication platforms such as Zoom and Slack.

5.0

They’re able to suggest solutions and better alternatives as opposed to just agreeing to our every idea

Eric Vogel

Co-Founder, Circularr, Ltd

Through a mindfully built MVP and experience-backed consultation, PixelPlex has helped the client establish a customer base in various sectors. Apart from having in-depth blockchain-related knowledge, the team sports a high level of organization and attention to detail.

5.0

They gave us a lot of advice that we, in turn, could sell to our customers again — that was really good.

Senior Manager

Ernst & Young AG

The level of insight and detailed knowledge delivered by the PixelPlex team blew away the client’s expectations. Their team showed new perspectives and provided valuable suggestions for improving the product. Dedicated and creative, the team was a true asset.

4.5

Why choose our development company

13+ years in blockchain development

With over a decade of blockchain experience across multiple protocols and frameworks, we bring proven development expertise and precise auditing practices to every Polkadot project.

Tech standards compliance

We apply strict security and regulatory standards to our smart contract development process, including KYC/AML compliance, multi-factor authentication, etc. to ensure enterprise-level compliance.

Agile approach & fast launch

We use ready-made Substrate modules and agile workflows to streamline Polkadot blockchain development, moving from concept to launch fast while maintaining production quality.

1M+

smart contracts on mainnet

450+

projects completed

$1.2B+

raised by our clients

50M+

end-users onboarded across our clients' dApps

exploits since day 1

unicorns exceeding $1B in value

Top blockchain
company 2024

Key benefits of Polkadot smart contract audit for your business

Strengthened platform security

Identify vulnerabilities within smart contracts and runtime logic to reduce potential exploits while reinforcing overall network integrity.

Improved network performance

Detect performance bottlenecks in transaction execution to boost execution speed and resource efficiency across your Polkadot environment.

Reliable upgrade process

Validate runtime updates and governance-controlled actions to maintain consistent functionality through every version change and avoid service interruptions.

Enhanced cross-chain reliability

Audit XCM configurations and bridge integrations to guarantee smooth and secure interaction between parachains and external networks.

Reduced post-launch risks and costs

Fix logic flaws and weak configurations early in development to prevent rework or downtime later, keeping delivery timelines predictable.

Cost of Polkadot smart contract audit services

Starting at

$5,000

Deploy securely with Polkadot smart contract audit services delivered by a team trusted by global blockchain innovators for over 13 years.

What's included:

Architecture review & scope definition
Manual code review with automated analysis
Runtime performance & stability testing
Cross-chain & bridge security assessment
Detailed reporting with re-audit

Start your planning with a detailed Polkadot smart contract audit cost estimate.

Our audit process

We approach every Polkadot audit through a clear process that helps you understand how your project behaves under real conditions and what needs improvement before deployment.

1. Project scope definition

2. Architecture review

3. Manual code analysis

4. Runtime behavior testing

5. Cross-chain security validation

6. Reporting and re-audit

Project scope definition

We start by studying your documentation and technical setup to understand the system's architecture and goals. This stage defines the audit boundaries and establishes clear focus areas for the review.

Deliverables

Audit scope & objectives
Component mapping across runtimes & contracts
Timeline & resource plan

Architecture review

Our team analyzes how components interact across the Polkadot ecosystem to uncover design issues that could lead to security or performance risks before the code review begins.

Deliverables

Architecture risk summary
Interaction & dependency overview
Initial recommendations for system improvement

Manual code analysis

We perform a detailed manual review of the source code to detect logic flaws and potential vulnerabilities. Automated tools are used to confirm findings and validate code quality across all modules.

Deliverables

Annotated code review notes
Detected logic & security issues
Tool-assisted validation results

Runtime behavior testing

The audit moves to runtime validation where we test how contracts and modules behave under load and in upgrade scenarios to ensure predictable performance.

Deliverables

Runtime performance report
Weight & deposit analysis
Upgrade stability review

Cross-chain security validation

We review cross-chain communication through XCM and bridge connections to verify message handling and asset transfer security, ensuring that every transaction remains authenticated.

Deliverables

Cross-chain test results
Identified routing or validation issues
Security hardening recommendations

Reporting and re-audit

At the final stage, we prepare a full audit report describing findings and clear remediation steps. After fixes are applied, a re-audit confirms that all issues are resolved and the system is ready for production.

Deliverables

Full audit report with prioritized issues
Remediation guidance
Verified re-audit confirmation

We audit smart contracts across multiple blockchains

Our experience spans leading blockchain ecosystems, allowing us to tailor our audit approach to each network’s protocol design.

Blockchain technology platforms

Ethereum

Solana

Cardano

Polkadot

Flow

Polygon

Bitcoin

Binance Smart Chain

Hyperledger

Hedera

Echo

Quorum

Graphene

EOS

Corda

Dash

Ripple

Technology stack

Solidity

C++

Angular

Python

React

NextJS

NestJS

Express

Swift

Kotlin

Cadence

Node.js

Our signature domains

PixelPlex specializes in technologies that connect engineering precision with business transformation, helping clients turn innovation into practical results.

Blockchain

We deliver end-to-end blockchain solutions, helping businesses build scalable and production-ready products across major ecosystems like Polkadot, Ethereum, and Solana.

Explore blockchain development services

Tokenization

With deep blockchain expertise, we build tokenization systems that make assets tradable and fractional, supported by wallet integration and marketplace workflows.

Explore tokenization services

Data science

Our data science service combines custom model engineering, advanced algorithms, and domain knowledge to solve specific data-driven problems and create measurable business impact.

Explore data science development services

Machine learning

We build advanced machine-learning solutions that turn complex data into strategic insight for problems like fraud detection, computer vision, and NLP.

Explore machine learning services

Your journey with PixelPlex starts here

STEP 1

Reach out – no pressure

Drop us a line, call, or fill out our form. Tell us what's on your mind, no obligation.

STEP 2

Deep dive: consultation

Let's discuss your goals, budget, and timeline. We want to fully grasp your vision and needs.

STEP 3

Development roadmap

Receive a clear roadmap, scope of work, and investment estimate.

STEP 4

Kickoff & development

Once aligned, we’ll sign the agreement and launch your project.

Explore our insights

Gain expert knowledge from a team with over a decade of experience in blockchain development and machine learning.

Blockchain

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3 Jul, 2023

Blockchain

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9 Nov, 2022

Blockchain

Polkadot Parachains vs Ethereum Shards vs Kusama: What's the Difference?

4 Nov, 2022

What makes Polkadot smart contract audits different from standard Ethereum audits?

Polkadot audits are more complex because the ecosystem runs on Substrate, which means the process involves not only checking smart contracts but also reviewing how different layers of the runtime work together. In short, a Polkadot smart contract security audit must also account for runtime upgrades, governance logic, and how messages and assets move between parachains.

Which parts of a Polkadot project can be audited?

Almost every technical layer can be reviewed, depending on what you've built. That includes ink! smart contracts, Solidity contracts running in EVM environments, Substrate runtime modules, governance logic, chain extensions, and precompiles. For projects using XCM, the audit also covers message validation and asset transfer safety between parachains.

What does a Polkadot smart contract audit include?

A Polkadot audit examines your entire system, from ink! or EVM contracts to Substrate components and XCM configurations. We review code quality and logic consistency, analyze runtime behavior under stress, and confirm that upgrade procedures are safe. When cross-chain messaging is involved, we test message delivery and asset transfers to ensure reliability. The final report details identified issues and recommended fixes, while an optional re-audit is available to confirm everything is ready for launch.

How should we prepare for a Polkadot smart contract audit?

Make sure your codebase is stable and up to date: no ongoing feature changes during the audit. Have documentation ready that explains your system's architecture, logic, and intended behavior. If you already have unit or integration tests, that's a big plus. The better prepared your materials are, the faster the audit runs and the more meaningful the results will be.

What happens after the audit is complete?

After the audit, you get a full report that lists all discovered issues with their risk level, plus practical advice on fixing them. Once you've made the changes, we can re-check the code to confirm that everything's patched correctly. The goal is to make sure your Polkadot project is genuinely ready for launch or upgrade without hidden risks.