We architect, develop, and audit custom Solidity and Rust smart contracts for DeFi, NFTs, and enterprise applications. Our contracts are built on a foundation of OpenZeppelin standards and formal verification principles to ensure security and reliability from day one.
LABS
Services
Cairo Oracle Contract Formal Verification
Apply mathematical proof techniques to verify the correctness and security of your StarkNet oracle's Cairo logic. Eliminate runtime errors and logical flaws before deployment.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
From a 2-week MVP to a complex multi-chain protocol, we deliver battle-tested code that executes as intended.
- Full Development Lifecycle: Specification, implementation, unit testing, deployment, and maintenance.
- Security-First Approach: Every line undergoes peer review and is tested against common vulnerabilities (
reentrancy,overflow). - Gas Optimization: We write efficient code to minimize transaction costs for your users.
- Multi-Chain Ready: Deployable on EVM chains (Ethereum, Polygon, Arbitrum) and Solana.
key-features-cards
PROVEN PROCESS
Our Formal Verification Methodology
We apply a rigorous, multi-stage methodology to mathematically prove the correctness of your Cairo oracle contracts, eliminating critical vulnerabilities before deployment.
01
1. Specification & Modeling
We translate your oracle's business logic into formal, machine-readable specifications using TLA+ or Lean. This creates an unambiguous mathematical model of the intended system behavior.
100%
Logic Coverage
Zero Ambiguity
Requirement Clarity
02
2. Cairo Code Verification
Our experts verify the actual Cairo bytecode against the formal model using tools like K-framework and custom SMT solvers, proving functional correctness and security properties.
Mathematical Proof
Verification Standard
No False Positives
Result Accuracy
03
3. Property Validation
We define and prove critical properties: price feed liveness, data integrity, tamper resistance, and gas efficiency bounds to ensure oracle reliability under all network conditions.
Liveness
Guaranteed
Integrity
Formally Proven
04
4. Audit-Ready Report
Receive a comprehensive verification report detailing proven properties, model assumptions, and any residual risks. This document satisfies the highest standards for external security audits and stakeholder review.
Audit Ready
Documentation
StarkNet Compatible
Standards
benefits
PROVEN SECURITY & RELIABILITY
Business Outcomes of Formally Verified Oracles
Formal verification mathematically proves your oracle's logic is correct and secure, delivering tangible business advantages for DeFi protocols and data-dependent applications.
01
Eliminate Oracle Exploits
Mathematical proof eliminates entire classes of vulnerabilities like price manipulation, flash loan attacks, and data staleness, protecting millions in TVL.
0
Critical Logic Flaws
100%
Specification Coverage
02
Accelerate Security Audits
Pre-verified logic reduces auditor review time by up to 70%, allowing for faster, more focused security assessments and quicker mainnet deployment.
70%
Faster Audit Cycle
< 3 weeks
To Final Report
03
Reduce Insurance & Risk Premiums
Demonstrate provable security to insurers and stakeholders, significantly lowering coverage costs and building trust with institutional partners.
40-60%
Lower Premiums
Tier-1
Insurer Eligibility
04
Ensure Regulatory Compliance
Formal proofs provide auditable, deterministic evidence of system behavior, simplifying compliance for financial regulators in key jurisdictions.
FATF Travel Rule
Compliance Ready
MiCA
Audit Trail
05
Maximize Protocol Uptime & Reliability
Guarantee 100% logical correctness under defined conditions, preventing downtime from unforeseen edge cases and failed price updates.
99.99%
Logical Uptime SLA
0
Post-Launch Critical Bugs
06
Enhance Developer Velocity
Formally verified core contracts enable your team to build and iterate on application layers with confidence, reducing time spent on security re-audits.
50%
Faster Feature Deployment
Provable
Integration Safety
Choosing the Right Security Methodology
Formal Verification vs. Traditional Security Audit
A technical comparison of two distinct approaches to securing Cairo oracle contracts. Formal verification mathematically proves the absence of critical bugs, while traditional audits rely on expert review to find them.
| Security Factor | Traditional Security Audit | Formal Verification (Chainscore) |
|---|---|---|
Methodology | Manual review & automated testing | Mathematical proof of correctness |
Guarantee | High probability of finding bugs | Mathematical proof of absence for specified properties |
Coverage Scope | Sample-based; can miss edge cases | Exhaustive for all possible inputs & states |
Time to Result | 2-4 weeks | 3-6 weeks (initial proof) |
Cost Range | $15K - $50K+ | $30K - $100K+ |
Ideal For | General smart contracts, initial reviews | Mission-critical oracles, financial logic, regulatory compliance |
Output | Vulnerability report with recommendations | Formal proof certificate & machine-verifiable spec |
Ongoing Assurance | New audit required after major changes | Proof re-verification required (typically faster) |
Residual Risk Level | Medium (undiscovered vulnerabilities possible) | Extremely Low (for proven properties) |
process-walkthrough
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
Build, deploy, and scale custom blockchain networks tailored to your specific business logic and performance requirements.
We architect and implement bespoke blockchain solutions from the ground up, moving beyond generic frameworks. Our approach delivers sovereign networks with custom consensus, tokenomics, and governance designed for your exact use case—whether it's a private consortium chain or a public L1/L2.
- Protocol-Level Development: Custom
Solidity/Rustsmart contracts, consensus mechanisms (PoS,PoA), and virtual machines. - Full-Node & RPC Infrastructure: Dedicated node deployment with 99.9% uptime SLA, secure RPC endpoints, and real-time monitoring.
- Interoperability Bridges: Secure cross-chain messaging and asset bridges using protocols like
AxelarorLayerZero. - Complete Tooling Suite: Block explorers, wallets, staking dashboards, and developer SDKs.
We deliver a production-ready mainnet in 8-12 weeks, including comprehensive security audits, documentation, and devops automation for ongoing management.
use-cases
WHY FORMAL VERIFICATION IS CRITICAL
Ideal for High-Stakes Oracle Applications
For applications where data integrity is non-negotiable, formal verification provides mathematical proof of correctness, eliminating the risk of logic errors that could lead to catastrophic financial loss.
01
DeFi Lending & Borrowing Protocols
Mathematically guarantee that price feed logic is free from reentrancy, overflow, and manipulation vulnerabilities. Protect collateral valuations and liquidation triggers.
100%
Logic Coverage
Zero
False Positives
02
Cross-Chain Bridges & Asset Wrappers
Prove the soundness of mint/burn logic and state synchronization. Eliminate risks of double-spending or incorrect asset representation across chains.
100%
Logic Coverage
Zero
False Positives
03
Insurance & Prediction Markets
Formally verify payout calculations and oracle resolution mechanisms. Ensure claims are settled precisely according to the verified contract specification.
100%
Logic Coverage
Zero
False Positives
04
Algorithmic Stablecoins & Synthetics
Prove the correctness of rebasing logic, collateral ratios, and oracle-driven monetary policy. Prevent depegging events caused by contract bugs.
100%
Logic Coverage
Zero
False Positives
05
Institutional Settlement Layers
Deliver auditable, court-admissible proof of oracle behavior for regulated financial products. Meet the highest standards of operational integrity.
100%
Logic Coverage
Zero
False Positives
06
High-Frequency Trading (HFT) DEXs
Verify ultra-low-latency price update mechanisms are free from race conditions and ensure atomic execution of trades based on verified data.
100%
Logic Coverage
Zero
False Positives
Technical & Process Details
Cairo Oracle Formal Verification FAQs
Get clear answers on our methodology, timeline, and security guarantees for formally verifying your Cairo-based oracle contracts.
A standard verification engagement for a Cairo oracle contract takes 3-5 weeks. This includes 1 week for specification & modeling, 2-3 weeks for verification & proof generation, and 1 week for final reporting and handoff. Complex multi-contract systems or custom mathematical proofs can extend this timeline, which we scope and quote upfront.
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