We architect, develop, and deploy secure Solidity/Rust smart contracts for DeFi, NFTs, and enterprise applications. Every contract undergoes formal verification and third-party audits (e.g., OpenZeppelin, CertiK) before mainnet deployment.
LABS
Services
ZK-Rollup Privacy-Preserving Randomness Services
We build and deploy custom randomness oracles that use zero-knowledge proofs to deliver verifiable random numbers to Layer 2 networks, keeping requests and results private from the base chain.
Chainscore © 2026
overview
SECURE, AUDITED CODE
Smart Contract Development
Production-ready smart contracts built with enterprise-grade security and gas optimization.
Reduce development risk with battle-tested security patterns and a 99.9% bug-free deployment record.
- Custom Logic: Tailored
ERC-20,ERC-721,ERC-1155, and complex DeFi primitives (AMMs, lending vaults). - Gas Optimization: Achieve up to 40% lower transaction costs through advanced optimization techniques.
- Full Lifecycle: From architecture and development to deployment, monitoring, and upgrade management via proxies.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Technical Capabilities
Our ZK-Rollup privacy-preserving randomness services are built on a foundation of battle-tested cryptography and high-performance infrastructure, designed to meet the stringent demands of production DeFi, gaming, and NFT applications.
02
Zero-Knowledge Proof Integration
We integrate ZK-SNARKs (e.g., Circom, Halo2) to prove the correctness of randomness generation without revealing the seed or internal state. This preserves user and application privacy while maintaining full auditability on the L1.
03
High-Throughput Rollup Architecture
Built on custom ZK-Rollup stacks (zkSync Era, StarkNet, or Polygon zkEVM) for scalability. Process thousands of randomness requests per second with sub-2 second finality, keeping costs below $0.01 per request.
< 2 sec
Finality Time
< $0.01
Avg. Cost/Request
05
Decentralized Operator Network
Fault-tolerant network of independent node operators running our client software. Uses a threshold signature scheme (TSS) to eliminate single points of failure and ensure liveness even if 1/3 of nodes are offline.
99.9%
Uptime SLA
> 10
Node Operators
06
Developer-First APIs & SDKs
REST and WebSocket APIs with typed SDKs for JavaScript/TypeScript, Python, and Go. Includes comprehensive documentation, testing environments, and client-side libraries for easy integration in under 2 weeks.
< 2 weeks
Integration Time
benefits
ENTERPRISE-GRADE INFRASTRUCTURE
Why Choose a Dedicated ZK Randomness Oracle
Generic RNGs expose your application to front-running and manipulation. Our dedicated service delivers verifiable, unpredictable randomness as a core utility for secure Web3 applications.
02
Predictable Cost & Performance
Fixed monthly subscription with no per-call gas fees. Guaranteed sub-2-second latency with 99.9% uptime SLA, ensuring your dApp's user experience and economics are never compromised.
< 2 sec
Median Latency
99.9%
Uptime SLA
04
Dedicated Throughput & Isolation
Your oracle runs on isolated infrastructure, not a shared public service. This guarantees consistent throughput for high-volume applications and protects you from noise or attacks on other networks.
Dedicated
Resource Isolation
10k+ TPS
Guaranteed Capacity
05
Regulatory & Audit Readiness
Designed for compliance-sensitive use cases like gaming and finance. We provide full audit trails, proof of entropy, and documentation to satisfy internal and external security audits.
Full Audit Trail
Compliance
SOC 2 Type II
Infrastructure
06
Expert Integration Support
Get direct engineering support for integration with your ZK-rollup (StarkNet, zkSync, Scroll) or L1. We handle the cryptographic complexity so you can focus on your core product.
< 2 weeks
Avg. Integration
24/7
Dev Support
Infrastructure Decision Analysis
Build vs. Buy: ZK Randomness Oracle
Comparing the total cost, risk, and time investment of developing a verifiable randomness solution in-house versus using Chainscore's production-ready ZK-Rollup oracle service.
| Factor | Build In-House | Chainscore Service |
|---|---|---|
Time to Production | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $0 (No upfront dev cost) |
Cryptographic Expertise Required | Senior ZK/MPC engineers | None required |
Security Audit & Penetration Testing | Additional $50K - $150K | Included (audit reports provided) |
Ongoing Infrastructure & DevOps | Your team, 2+ FTEs | Fully managed by Chainscore |
Uptime & Reliability SLA | You build & maintain | 99.95% Guaranteed |
Protocol Upgrades & Maintenance | Your responsibility | Handled automatically |
Total Year 1 Cost (Est.) | $300K - $750K+ | Starting at $75K/year |
Integration Complexity | High (R&D, testing, deployment) | Low (API & smart contract hooks) |
Time to First Random Request |
| < 48 hours |
how-we-deliver
PREDICTABLE, TRANSPARENT DELIVERY
Our Delivery Process: From Design to Mainnet
A structured, milestone-driven approach ensures your ZK-Rollup privacy-preserving randomness service is delivered on time, on budget, and with enterprise-grade security.
01
Phase 1: Architecture & Threat Modeling
We define the system architecture, select the optimal ZK-SNARK/STARK framework (e.g., Circom, Halo2), and conduct a formal threat model to identify and mitigate risks to randomness integrity before a single line of code is written.
1-2 weeks
Duration
100%
Requirement Lock
02
Phase 2: Core Circuit & Smart Contract Development
Our engineers build the verifiable randomness circuit and the on-chain verifier/manager contracts. We implement gas-optimized Solidity (0.8+) with OpenZeppelin standards and conduct internal peer reviews.
3-4 weeks
Duration
OpenZeppelin
Security Base
03
Phase 3: Security Audit & Formal Verification
Your system undergoes a rigorous audit by a top-tier third-party firm (e.g., Trail of Bits, Quantstamp). We integrate findings and provide a formal verification report for the core cryptographic circuits.
2-3 weeks
Duration
Zero Critical
Audit Target
04
Phase 4: Testnet Deployment & Integration
We deploy the full stack to a designated testnet (e.g., Sepolia, Holesky), execute comprehensive integration tests, and provide your team with SDKs and documentation for seamless API integration.
1-2 weeks
Duration
Full SDK
Deliverable
05
Phase 5: Mainnet Launch & Monitoring
We manage the production deployment, configure real-time monitoring with PagerDuty/Sentry alerts, and establish a 24/7 incident response protocol. We provide a 30-day hypercare support period post-launch.
1 week
Duration
99.9% SLA
Uptime Commitment
06
Phase 6: Ongoing Support & Upgrades
We offer retainer-based support for protocol upgrades, new feature development, and periodic security re-audits. Our team stays current with ZK-proof advancements (e.g., PLONK, Nova) to keep your system state-of-the-art.
Ongoing
Duration
< 4 hr
Response Time SLA
security-approach
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built to your exact specifications, from concept to mainnet deployment.
We architect and deploy production-grade smart contracts that power your business logic. Our process ensures security-first development with formal verification and multiple audit cycles before any code touches the mainnet.
- Custom Logic: Build on
ERC-20,ERC-721,ERC-1155or bespoke standards. - Security Audits: Partner with top firms like CertiK and OpenZeppelin.
- Gas Optimization: Achieve up to 40% lower transaction costs through expert optimization.
- Full Lifecycle: From initial spec to deployment and ongoing upgrade management via proxy patterns.
We deliver contracts you can stake your reputation on, with a track record of zero critical vulnerabilities in production deployments.
ZK-Rollup Randomness
Frequently Asked Questions
Get clear answers on our privacy-preserving randomness service for ZK-Rollups, from integration to security.
Our service provides a decentralized, verifiable random function (VRF) that generates randomness off-chain and commits it to your ZK-Rollup with a zero-knowledge proof. The random seed is generated via a multi-party computation (MPC) ceremony among independent nodes, ensuring no single party can predict or bias the outcome. The final random value and its proof are then submitted to your rollup's L1 contract for on-chain verification and availability.
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