We architect and deploy custom smart contracts that form the backbone of your Web3 application. Our development process is built on security-first principles and battle-tested patterns from OpenZeppelin and Solmate.
LABS
Services
StarkNet Cairo Verifiable Content Feeds
We build provably fair and tamper-proof content recommendation and curation systems using StarkNet's Cairo language, enabling transparent algorithms for social media and news platforms.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- From Audit to Mainnet: Full lifecycle support from specification and
Solidity 0.8+development to third-party audits and gas-optimized deployment. - Protocol Specialization: Custom logic for
ERC-20,ERC-721,ERC-1155, DeFi primitives (AMMs, staking, lending), and complex multi-signature systems. - Guaranteed Quality: Every contract undergoes rigorous unit testing (>95% coverage) and static analysis before peer review.
We deliver contracts that are secure by design, reducing post-launch vulnerabilities and protecting your users' assets.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Verifiable Feed Service
Our StarkNet Cairo-based verifiable feeds deliver tamper-proof, high-frequency data directly to your smart contracts, enabling new classes of on-chain applications.
benefits
DELIVERABLES
Business Outcomes for Your Platform
Our StarkNet Cairo verifiable content feeds are engineered to deliver specific, measurable results for your decentralized application. We focus on the technical and business outcomes that matter most to your team.
Infrastructure Decision Matrix
Build vs. Buy: Verifiable Feeds
A detailed comparison of the total cost, risk, and time investment required to build and maintain verifiable data feeds in-house versus using Chainscore's managed service.
| Factor | Build In-House | Chainscore Managed Feeds |
|---|---|---|
Development Timeline | 4-9 months | 2-4 weeks |
Initial Engineering Cost | $150K - $400K+ | $25K - $75K |
Cairo/StarkNet Expertise Required | Senior team (2-3 FTE) | None (we provide it) |
Security Audit & Formal Verification | Additional $50K-$100K & 8-12 weeks | Included & pre-verified |
Ongoing Feed Maintenance & Updates | 1-2 DevOps Engineers | Fully managed by Chainscore |
Uptime & Reliability SLA | Your responsibility (no SLA) | 99.9% SLA with monitoring |
Multi-Chain Support (L2/L3) | Custom integration per chain | Native support out-of-the-box |
Total Year 1 Cost (Est.) | $300K - $600K+ | $75K - $150K |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Delivery Process: From Specification to Mainnet
We deliver production-ready, verifiable data feeds on StarkNet with a structured, milestone-driven approach. This ensures technical alignment, predictable timelines, and zero surprises from initial concept to mainnet deployment.
01
1. Discovery & Specification
We conduct a technical deep-dive to define your data requirements, source reliability, and Cairo contract architecture. This phase establishes clear success metrics and a detailed project roadmap.
1-2 weeks
Typical Duration
100%
Specification Clarity
02
2. Cairo Smart Contract Development
Our expert Cairo developers build the core feed logic, including data aggregation, validation, and state updates, following OpenZeppelin security patterns for StarkNet.
Solidity 0.8+
Security Standard
2-4 weeks
Development Cycle
03
3. Oracle Integration & Testing
We integrate with leading oracle networks (e.g., Chainlink, Pragma) and conduct exhaustive unit, integration, and stress testing on a dedicated StarkNet testnet.
> 95%
Test Coverage
< 500ms
Target Latency
04
4. Security Audit & Review
Every feed undergoes a rigorous internal security review. For critical applications, we facilitate third-party audits with partners like Nethermind to ensure contract integrity.
2+ Auditors
Review Depth
0 Critical
Guarantee
05
5. Testnet Deployment & Monitoring
We deploy the verified feed to a public testnet (e.g., StarkNet Goerli) for final validation under real-world conditions, with 24/7 monitoring and performance dashboards.
7-10 days
Observation Period
99.9%
Testnet Uptime SLA
06
6. Mainnet Launch & Support
We manage the secure mainnet deployment, provide comprehensive documentation, and offer ongoing support with defined SLAs for uptime, data freshness, and incident response.
< 1 day
Deployment Window
24/7
Support Coverage
StarkNet Cairo Verifiable Content Feeds
Frequently Asked Questions
Get clear answers about our specialized service for building high-integrity, on-chain data feeds using StarkNet's Cairo VM.
From specification to mainnet deployment, a standard feed with 2-3 data sources takes 3-5 weeks. Complex multi-source feeds with custom aggregation logic can take 6-8 weeks. We provide a detailed project plan with weekly milestones after the initial scoping call.
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