We architect and deploy production-grade smart contracts that are secure by design. Our development lifecycle includes formal verification, comprehensive unit testing, and third-party audits from firms like Quantstamp and CertiK to mitigate financial and reputational risk.
LABS
Services
StarkNet Cairo ZK-Oracle for Events
We build custom, privacy-preserving oracles on StarkNet using Cairo and zero-knowledge proofs. Securely verify event outcomes while protecting sensitive betting data and user positions from exposure.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contract development for DeFi, NFTs, and enterprise applications.
- Custom DeFi Protocols: DEX/AMMs, lending/borrowing platforms, yield aggregators, and derivatives.
- NFT & Token Standards:
ERC-20,ERC-721,ERC-1155with advanced features like royalties and staking. - Enterprise Logic: Multi-signature wallets, DAO governance, and custom business logic for supply chain or identity.
We deliver battle-tested code with a 99.9% uptime SLA and gas optimization that can reduce user transaction costs by up to 40%.
Our process ensures regulatory-compliant architecture and a clear path from a 2-week MVP to a fully scalable mainnet launch.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our ZK Oracle Service
Our StarkNet Cairo ZK-Oracle for Events delivers verifiable, real-world data on-chain with cryptographic guarantees. Built for production-ready applications requiring high-frequency, low-latency data feeds.
01
Cairo 1.0 Smart Contract Integration
Seamless integration with your existing StarkNet Cairo 1.0 smart contracts. We provide a secure, audited oracle interface contract and a full SDK for developers, enabling on-chain event verification in under 100 lines of code.
< 100 LOC
Integration Effort
Cairo 1.0+
Protocol Version
02
High-Frequency Event Verification
Capture and prove real-world events (e.g., price feeds, sports scores, IoT data) with sub-2 second latency. Our infrastructure is optimized for high-throughput applications like DeFi, prediction markets, and on-chain gaming.
< 2 sec
Proving Latency
10k+ TPS
Event Throughput
03
Zero-Knowledge Proof Generation
Generate STARK proofs for event data validity off-chain, ensuring data integrity without revealing sensitive source information. This provides cryptographic security for your application's core logic.
STARKs
Proof System
256-bit
Security Level
04
Multi-Source Data Aggregation
Aggregate and verify data from multiple, redundant API sources (e.g., Binance, CoinGecko, custom endpoints) to eliminate single points of failure and ensure data accuracy and liveness for critical applications.
3+ Sources
Per Data Feed
99.9% SLA
Data Uptime
05
Gas-Optimized On-Chain Verification
Our verification contracts are meticulously gas-optimized for StarkNet, minimizing the L2 transaction costs for your end-users when consuming oracle data, a critical factor for scalable dApps.
< 0.001 ETH
Avg. Verify Cost
OpenZeppelin
Security Audit
06
Dedicated Infrastructure & Monitoring
Enterprise-grade, geo-distributed node infrastructure with 24/7 monitoring, alerting, and failover protocols. Includes a dedicated dashboard for uptime metrics and data feed health.
99.95%
Infra Uptime SLA
24/7
Monitoring
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our StarkNet Cairo ZK-Oracle for Events delivers concrete infrastructure improvements, enabling you to build more powerful and reliable on-chain applications.
01
Real-Time, Verifiable Event Data
Ingest and prove off-chain events (API calls, sports scores, IoT data) on StarkNet with zero-knowledge validity proofs. Enables DeFi conditionals, gaming logic, and insurance payouts triggered by real-world data.
< 2 sec
Proof Generation
100%
Data Integrity
02
Enhanced Application Logic & Composability
Build complex, conditional smart contracts that react to external data. Create sophisticated DeFi derivatives, dynamic NFT experiences, and automated governance actions without centralized oracles.
Unlimited
Data Sources
L1 & L2
Cross-Chain Compatible
03
Enterprise-Grade Security & Reliability
Leverage Cairo's provable security model. Every data point is cryptographically verified before on-chain use, eliminating oracle manipulation risks and providing a trust-minimized foundation for high-value applications.
99.9%
Uptime SLA
ZK-Proven
Security Model
04
Reduced Development Time & Cost
Skip the months of R&D and security auditing for custom oracle solutions. Our production-ready Cairo verifier contracts and proven data-fetching infrastructure let you integrate in weeks, not quarters.
< 3 weeks
Integration Time
~80%
Cost Reduction
Technical Architecture Comparison
ZK Oracle vs. Traditional Oracle Architecture
A side-by-side analysis of the core architectural differences between our StarkNet Cairo ZK-Oracle for Events and conventional oracle solutions, highlighting key advantages in security, cost, and performance.
| Architectural Feature | Traditional Oracle | Chainscore ZK Oracle |
|---|---|---|
Data Integrity Proof | ||
On-Chain Verification Cost | High (Gas-intensive) | Low (ZK-verified off-chain) |
Trust Assumption | Trusted third-party signers | Trustless cryptographic proof |
Data Finality Latency | Minutes to hours | Sub-second (L2 native) |
Security Model | Economic/Reputation-based | Cryptographic (ZK-SNARKs) |
Event Processing Throughput | Limited by L1 gas | 10,000+ events/sec (StarkNet scale) |
Audit Complexity | High (oracle & app logic) | Reduced (app logic only) |
Implementation Timeline | 3-6 months | 4-8 weeks |
Typical Annual TCO | $100K+ (gas + ops) | $50K-$150K (managed service) |
how-we-deliver
PROVEN METHODOLOGY
Our Development Process
A structured, transparent approach to building secure, high-performance ZK-Oracle systems. From initial architecture to mainnet deployment, we deliver production-ready solutions on schedule.
01
Architecture & Design Review
We begin with a collaborative deep-dive into your event data requirements and StarkNet integration points. We design a modular Cairo architecture for your oracle, ensuring data integrity, low-latency updates, and cost-efficient on-chain verification.
1-2 weeks
Design Phase
3+ models
Architecture Reviewed
02
Cairo Smart Contract Development
Our team writes, tests, and optimizes the core Cairo contracts for your oracle. This includes the data request logic, ZK-proof verification layer, and secure data publishing mechanisms, all following StarkNet best practices.
Solidity 0.8+
Security Patterns
OpenZeppelin
Audited Libraries
03
Off-Chain Prover & Relayer System
We build the robust off-chain infrastructure that fetches, processes, and proves your event data. This system generates STARK proofs for data validity and reliably submits verified data to your StarkNet contracts.
99.9% SLA
Relayer Uptime
< 5 sec
Proof Generation
05
Testnet Deployment & Staging
We deploy the complete oracle system to StarkNet testnets (Goerli, Sepolia). We conduct end-to-end integration testing, load testing under simulated mainnet conditions, and a full staging environment rehearsal.
Full E2E
Test Suite
1000+ TPS
Load Tested
06
Mainnet Launch & Monitoring
We manage the production deployment to StarkNet Mainnet and establish comprehensive monitoring, alerting, and incident response protocols. We provide ongoing support to ensure system reliability and data freshness.
24/7
Monitoring
< 1 hr
Response SLA
security
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production by veteran Solidity engineers.
We architect and deploy production-ready smart contracts that are secure, gas-optimized, and upgradeable. Our development process is built on OpenZeppelin standards and includes formal verification for critical logic.
From token standards to complex DeFi primitives, we deliver contracts you can stake your business on.
- Token Systems: Custom
ERC-20,ERC-721, andERC-1155with minting, vesting, and governance modules. - DeFi & DEX: Automated Market Makers (AMMs), lending pools, staking contracts, and yield aggregators.
- Enterprise Logic: Multi-signature wallets, asset tokenization platforms, and custom business logic on-chain.
- Security First: Every contract undergoes manual review, static analysis, and test coverage >95% before audit.
We manage the full lifecycle: requirements, development, testing, deployment, and post-launch monitoring. Get a secure, auditable codebase in weeks, not months.
StarkNet Cairo ZK-Oracle for Events
Frequently Asked Questions
Get clear answers on our development process, security, and delivery for custom ZK-Oracles.
We follow a structured 4-phase process: 1) Discovery & Scoping (1 week) to define event sources and data models. 2) Architecture & Design (1-2 weeks) for the Cairo smart contracts and off-chain prover logic. 3) Development & Testing (2-4 weeks) including unit, integration, and security tests. 4) Deployment & Audit (1-2 weeks) to StarkNet testnet and mainnet. We provide weekly demos and maintain a shared project dashboard for full transparency.
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