We architect and deploy custom smart contracts that form the foundation of your protocol. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit cycles to ensure robust, gas-optimized code.
LABS
Services
StarkNet Cairo ZK-Oracle for DeFi
We engineer verifiable oracle data feeds using Cairo on StarkNet. Zero-knowledge proofs ensure data integrity and computation correctness, providing MEV resistance through cryptographic guarantees for your DeFi application.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
From token standards to complex DeFi logic, we deliver contracts that are secure by design and ready for mainnet.
- Custom Token Contracts:
ERC-20,ERC-721,ERC-1155, and bespoke implementations with custom minting, vesting, and governance logic. - DeFi & DApp Logic: Automated Market Makers (AMMs), staking pools, yield aggregators, and multi-signature wallets.
- Security & Auditing: Formal verification, unit/integration testing, and preparation for third-party audits from firms like CertiK or Quantstamp.
- Full Lifecycle Support: Development, deployment, verification on Etherscan, and ongoing maintenance/upgrade planning.
key-features-cards
ZK-ORACLE DEVELOPMENT
Core Technical Capabilities
Our StarkNet Cairo ZK-Oracle service delivers verifiable, low-latency data feeds essential for secure and scalable DeFi applications. We build the critical infrastructure your protocol needs to operate trustlessly on Layer 2.
01
Custom Cairo Smart Contract Development
We architect and deploy high-assurance Cairo 1.0 smart contracts for your oracle's core logic, data aggregation, and fee mechanisms, ensuring gas efficiency and StarkNet compatibility.
Cairo 1.0
Language
OpenZeppelin
Security Patterns
02
Zero-Knowledge Proof Integration
We implement STARK proofs to cryptographically verify off-chain computations and data integrity before on-chain settlement, providing mathematically guaranteed correctness for your DeFi logic.
STARKs
Proof System
< 2 sec
Proof Gen Time
03
High-Frequency Data Feeds
Engineered for DeFi's low-latency demands, our oracle nodes deliver price feeds for spot, derivatives, and FX with sub-second update capabilities and robust data sourcing.
1000+
Assets Supported
< 500ms
Median Latency
04
Decentralized Node Architecture
We design and deploy fault-tolerant, geographically distributed oracle node networks with Byzantine fault tolerance, eliminating single points of failure for mission-critical data.
99.9%
Uptime SLA
> 10
Node Operators
05
Security Audits & Formal Verification
Every oracle system undergoes rigorous third-party audits (e.g., Nethermind, ABDK) and formal verification of core Cairo contracts to mitigate financial risk and protect user funds.
Zero Critical
Audit Findings
Formal
Verification
06
Cross-Chain & L2 Data Bridging
Specialized solutions for sourcing and attesting data from Ethereum L1 and other Layer 2s (zkSync, Arbitrum), enabling composable DeFi across the StarkNet ecosystem.
Ethereum L1
Data Source
CCIP
Bridge Standard
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Protocol
Our StarkNet Cairo ZK-Oracle development delivers more than code. We provide verifiable, production-ready infrastructure with measurable results for your DeFi protocol.
01
High-Frequency, Low-Latency Data Feeds
Deploy ZK-verified price oracles with sub-second finality, enabling high-frequency trading and liquidations with zero trust assumptions. Built on Cairo 1.0 for optimal L2 performance.
< 500ms
Update Latency
24/7
Monitoring
02
Formally Verified Security
Receive a Cairo smart contract suite audited by leading security firms and verified with formal methods. We guarantee the mathematical correctness of your oracle's core logic.
100%
Core Logic Verified
Zero
Critical Bugs Shipped
03
Rapid Protocol Integration
Go from specification to mainnet in weeks, not months. Our modular oracle architecture is designed for seamless integration with your existing lending, trading, or derivatives protocol.
2-4 weeks
To Testnet
1 week
Integration Support
04
Cost-Efficient Data Operations
Leverage StarkNet's scalability to reduce operational costs by over 90% compared to L1 oracles. Our gas-optimized Cairo contracts minimize fees for you and your users.
>90%
Cost Reduction vs L1
Optimized
Gas Consumption
05
Enterprise-Grade Reliability
Ensure 24/7 uptime for your protocol's most critical infrastructure. We provide managed oracle services with redundant data sources and automated failover mechanisms.
99.9%
Uptime SLA
< 5 min
Incident Response
06
Regulatory & Compliance Readiness
Build with transparency and auditability in mind. Our ZK-proof architecture provides an immutable, verifiable record of all data attestations for compliance reporting.
Immutable
Data Provenance
ZK-Proofs
For Audit Trails
Architectural Comparison
ZK-Oracle vs. Traditional Oracle Design
A technical breakdown of how our StarkNet Cairo ZK-Oracle fundamentally improves security, cost, and performance for DeFi applications compared to legacy designs.
| Architectural Feature | Traditional Oracle (e.g., Chainlink) | Chainscore ZK-Oracle (StarkNet) |
|---|---|---|
Data Integrity & Security | Relies on reputation & economic staking of nodes | Cryptographically proven via ZK-STARK validity proofs |
On-Chain Gas Cost | High (pays for data delivery & aggregation on L1) | Ultra-low (pays only for proof verification on L1) |
Latency (Data to Contract) | Moderate (3-20 sec for consensus & delivery) | Sub-second (data is pre-verified off-chain) |
Trust Assumption | Honest majority of nodes | Cryptographic truth (trustless) |
Data Manipulation Risk | Possible via node collusion or flash loan attacks | Mathematically impossible (data is part of proof) |
Development Complexity | High (requires integration, payment handling, fallback logic) | Low (simple contract call to verified state) |
Operational Cost Model | Recurring per-request fees + gas | Predictable subscription or fixed-cost model |
Time to Integrate | 2-4 weeks for robust implementation | < 1 week with our SDK & templates |
Ideal Use Case | General-purpose price feeds | High-frequency trading, real-time derivatives, capital-efficient lending |
how-we-deliver
PROVEN METHODOLOGY
Our ZK-Oracle Development Process
A systematic, security-first approach to building and deploying high-assurance ZK-Oracles for StarkNet DeFi applications, designed for rapid integration and production readiness.
01
Requirement & Architecture Design
We collaborate with your team to define precise data requirements, security parameters, and integration points. We architect a custom Cairo-based oracle solution optimized for your specific DeFi logic and StarkNet environment.
1-2 weeks
Design Phase
100%
Requirement Coverage
02
Cairo Smart Contract Development
Our certified Cairo developers write, test, and optimize the core ZK-Oracle logic. This includes data attestation circuits, state management, and gas-efficient update mechanisms using StarkNet's native toolchain.
Solidity 0.8+
Security Patterns
OpenZeppelin
Audited Libraries
04
Testnet Deployment & Integration
We deploy the oracle to StarkNet testnet (Goerli) and conduct end-to-end integration testing with your dApp. We simulate market conditions and failure scenarios to ensure reliability and data integrity.
> 1000
Test Scenarios
Full E2E
Integration Test
05
Mainnet Launch & Monitoring
We manage the secure mainnet deployment and establish 24/7 monitoring with alerting for data feed health, latency, and contract activity. We provide a dashboard for real-time oracle performance metrics.
99.9%
Uptime SLA
< 500ms
Alert Response
06
Ongoing Support & Upgrades
We provide continuous support, including protocol upgrades, new data source integration, and performance optimization. Our team ensures your oracle evolves with StarkNet and your DeFi product's needs.
24/7
Developer Support
SLA-Backed
Maintenance
ZK-Oracle Development Packages
Typical Project Timeline & Deliverables
A clear breakdown of our structured delivery approach for StarkNet Cairo ZK-Oracle development, from initial design to production deployment and support.
| Phase & Deliverable | Core Package | Advanced Package | Enterprise Package |
|---|---|---|---|
Project Duration | 4-6 Weeks | 6-10 Weeks | 10-16 Weeks |
Initial Architecture & Design Review | |||
Custom Cairo 1.0 Oracle Core Development | Basic Data Feeds | Advanced Feeds + Logic | Full-Suite with Custom Aggregation |
On-Chain Verifier & Prover Contracts | |||
Integration Testing Suite | Basic Unit Tests | Comprehensive E2E Suite | E2E Suite + Load & Security Tests |
Deployment to Testnet & Mainnet | Assisted Self-Deploy | Full Deployment Support | Full Deployment + CI/CD Pipeline |
Third-Party Security Audit | Not Included | 1 Audit Pass Included | 2 Audit Passes + Remediation |
Post-Launch Monitoring & Support | 30 Days | 90 Days | 1 Year SLA (99.9% Uptime) |
Developer Documentation & Handoff | API Specs | Full Docs + Integration Guide | Docs, Guide & Architecture Deep-Dive |
Typical Investment | $40K - $70K | $80K - $150K | Custom Quote ($200K+) |
StarkNet Cairo ZK-Oracle Development
Frequently Asked Questions
Get clear answers on our process, security, and delivery for building high-performance ZK-Oracles on StarkNet.
From initial specification to mainnet deployment, a standard ZK-Oracle with 3-5 data feeds typically takes 4-6 weeks. This includes 2 weeks for Cairo smart contract development, 1 week for circuit design and proving, 1 week for integration testing, and 2 weeks for security audits and final deployment. Complex multi-feed or cross-chain oracles can extend to 8-10 weeks.
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