We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process is built on industry best practices and a rigorous security-first methodology.
LABS
Services
Bridge Formal Methods Verification
We apply formal verification and mathematical proofs to your bridge's core logic, guaranteeing the absence of critical flaws in state transitions and consensus mechanisms before mainnet deployment.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts for your token, DeFi, or NFT project.
- Full-Stack Development: From
ERC-20/ERC-721tokens to complex DeFi protocols, cross-chain bridges, and DAO governance systems. - Security as Standard: All code follows OpenZeppelin patterns and undergoes multi-stage auditing, including automated analysis and manual review.
- Gas Optimization: We write efficient code to minimize transaction costs for your users, a critical factor for adoption.
- Comprehensive Delivery: You receive fully documented source code, deployment scripts, and a post-launch support plan.
We deliver contracts you can trust, reducing your time-to-market and technical risk.
Our engineers have deployed contracts handling billions in TVL across Ethereum, Polygon, Arbitrum, and other leading EVM chains. We ensure your logic is bulletproof before it goes live.
key-features-cards
PROVEN FRAMEWORK
Our Formal Verification Methodology
We apply rigorous mathematical proofs to verify the correctness of your bridge's core logic, eliminating entire classes of vulnerabilities that traditional testing and audits can miss. This systematic approach delivers the highest level of security assurance for cross-chain asset transfers.
01
Specification & Modeling
We formally define your bridge's intended behavior and security properties (e.g., "no double-spends", "correct finality") using TLA+ or Coq. This creates an unambiguous, mathematical blueprint before a single line of code is written.
100%
Property Coverage
Week 1
Project Phase
02
Code-Level Verification
Using tools like K-Framework or CertiK's Certora Prover, we mathematically prove that your Solidity/Vyper smart contract implementations adhere to the formal specifications, guaranteeing correctness for all possible execution paths.
0
Logic Flaws
All Paths
Verified
03
Protocol-Level Analysis
We model and verify the entire cross-chain protocol—including relayers, oracles, and consensus mechanisms—to prevent systemic risks like liveness failures, censorship, or economic attacks at the network layer.
End-to-End
System Proof
Byzantine
Fault Tolerance
benefits
THE BUSINESS CASE
Why Formal Verification is Non-Negotiable for Bridges
Bridge hacks account for over $2.5B in losses. Formal verification is the only method to mathematically prove the absence of critical bugs, moving beyond reactive audits to proactive, provable security.
04
Reduced Insurance & Liability Costs
A formally verified bridge is a demonstrably safer asset. This significantly reduces the cost of protocol insurance, satisfies stringent due diligence for institutional partners, and limits existential liability for your project.
>40%
Lower Premiums
Stronger
Due Diligence
05
Accelerated Security Audits
Deliver a pre-verified codebase to external auditors like Trail of Bits or OpenZeppelin. This shifts their focus from basic logic flaws to higher-level considerations, cutting audit timelines and costs by up to 50%.
~50%
Faster Audit
Higher
Audit ROI
Choosing the Right Security Methodology
Formal Verification vs. Traditional Security Audits
A technical comparison of formal methods verification and traditional manual audits for cross-chain bridge security, highlighting the depth of coverage and assurance each approach provides.
| Security Aspect | Traditional Manual Audit | Formal Verification (Chainscore) |
|---|---|---|
Methodology | Manual code review & heuristic testing | Mathematical proof of correctness |
Coverage Scope | Sampled execution paths | Exhaustive state-space exploration |
Guarantee Type | Probabilistic (bugs may be missed) | Deterministic (proven absence of specific flaws) |
Ideal For | Finding known vulnerability patterns | Proving critical invariants (e.g., no fund loss) |
Automation Level | Low (analyst-dependent) | High (tool-driven, repeatable) |
Output | Vulnerability report with severity ratings | Formal proof or counter-example for each property |
Time to Result | 2-4 weeks (variable) | 1-3 weeks (predictable) |
Cost Range | $15K - $50K+ (scope-dependent) | $30K - $100K+ (property-dependent) |
Post-Deployment Assurance | None (snapshot in time) | Ongoing proof maintenance available |
how-we-deliver
PROVEN METHODOLOGY
Our Verification Engagement Process
Our structured, four-phase approach delivers mathematically proven security for your bridge, from initial specification to final certification. We provide clear deliverables and timelines at every step.
01
Phase 1: Specification & Threat Modeling
We begin by rigorously formalizing your bridge's intended behavior and security properties. This includes creating a complete threat model to identify all potential attack vectors, ensuring the verification scope is comprehensive.
1-2 weeks
Typical Duration
100%
Property Coverage
02
Phase 2: Formal Model Development
Our experts translate your smart contract code into a high-fidelity formal model using tools like Dafny or Coq. This model serves as the single source of truth for all subsequent verification work.
2-4 weeks
Modeling Timeline
Line-by-Line
Code Correspondence
03
Phase 3: Property Verification & Proof
We mathematically prove that the formal model satisfies all specified security properties (e.g., conservation of funds, access control). Any discrepancies are documented as critical findings for remediation.
3-6 weeks
Verification Phase
Mathematical Proof
Guarantee Type
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
We deliver audit-ready code for ERC-20, ERC-721, and custom protocols, ensuring security and gas efficiency from day one. Our process includes formal verification and integration with OpenZeppelin libraries.
- Faster Time-to-Market: Deploy a secure, custom
ERC-20token in under 2 weeks. - Reduced Risk: Code is built with security-first patterns, undergoing peer review before your audit.
- Gas Optimization: Contracts are optimized for up to 40% lower deployment and execution costs.
We don't just write code; we engineer the secure, scalable foundation your DeFi or NFT project requires to launch with confidence.
Technical Deep Dive
Formal Verification FAQs for Bridge Teams
Answers to the most common questions CTOs and lead developers ask when evaluating formal verification for their cross-chain bridge.
A typical engagement for a production-ready bridge takes 4-8 weeks. This includes the scoping phase (1 week), modeling and specification (1-2 weeks), verification and proof generation (2-4 weeks), and reporting (1 week). For complex, multi-asset bridges with novel mechanisms, timelines can extend to 12 weeks. We provide a fixed timeline in our project proposal after the initial architecture review.
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