We architect and deploy custom smart contracts on EVM and Solana, ensuring gas optimization and audit readiness. Our code follows OpenZeppelin standards and is tested against the latest security threats.
LABS
Services
Privacy-Preserving Cross-Chain Oracle using ZK-Proofs
We build custom oracle networks that use zero-knowledge proofs to deliver verified data to smart contracts across any blockchain, keeping the source data and request context private.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
Deliver a secure, auditable foundation for your token, DeFi protocol, or NFT project in as little as 2-4 weeks.
- Full Lifecycle Support: From specification and
Solidity/Rustdevelopment to deployment and mainnet monitoring. - Security-First: Formal verification, unit/integration testing, and preparation for third-party audits (e.g., CertiK, Quantstamp).
- Protocol Specialization:
ERC-20,ERC-721,ERC-1155, custom DeFi logic, and cross-chain bridges.
key-features-cards
ARCHITECTURE & SECURITY
Core Technical Capabilities
Our privacy-preserving oracle is built on a zero-knowledge foundation, delivering verifiable data with enterprise-grade reliability. We provide the technical bedrock for compliant, cross-chain applications.
04
Sub-Second Finality Oracle Updates
Low-latency update protocol delivering verified data to smart contracts in under one second. Critical for high-frequency trading, options pricing, and real-time settlement applications.
< 1 sec
Update Latency
99.9%
SLA Uptime
05
Privacy-Preserving Data Schema
Custom schema design that encrypts sensitive inputs (e.g., user balances, trade sizes) while allowing proofs on aggregated results. Enables regulatory compliance (GDPR, MiCA) for on-chain analytics.
AES-256
Field Encryption
GDPR-ready
Compliance
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Project
Our ZK-based oracle delivers more than just data—it provides a foundation of trust and performance. Here are the concrete results you can expect.
01
Zero-Knowledge Data Integrity
We deliver verifiable data proofs using zk-SNARKs, ensuring your cross-chain applications receive authenticated data without exposing sensitive on-chain logic or sources. This eliminates data manipulation risks and builds user trust.
100%
Proof Integrity
0
Data Leaks
02
Cross-Chain Interoperability
Seamlessly connect data and assets across EVM, Solana, Cosmos, and other major L1/L2 networks. Our oracle abstracts away chain-specific complexities, enabling unified logic and liquidity.
15+
Networks Supported
< 5 sec
Cross-Chain Latency
04
High-Performance & Low Latency
Engineered for DeFi and real-time applications. We guarantee sub-second data finality with 99.9% uptime SLA, ensuring your protocols never miss a critical price feed or event.
99.9%
Uptime SLA
< 800ms
Data Finality
05
Gas-Optimized Cost Efficiency
Our ZK proofs are optimized for minimal on-chain verification costs. Reduce your protocol's operational expenses by up to 60% compared to traditional oracle models with frequent on-chain updates.
~60%
Gas Savings
Optimized
zk-SNARK Circuits
Infrastructure Decision Matrix
Build vs. Buy: Custom ZK Oracle vs. Public Alternatives
A detailed comparison of the total cost, risk, and time commitment for developing a privacy-preserving oracle in-house versus using Chainscore's managed service.
| Decision Factor | Build In-House | Public Oracle (e.g., Chainlink) | Chainscore Custom ZK Oracle |
|---|---|---|---|
Time to Production | 6-12+ months | Immediate | 4-8 weeks |
Upfront Development Cost | $250K - $750K+ | $0 (integration only) | $50K - $200K |
ZK-Circuit Expertise Required | Critical (hire team) | Not applicable | Included (our team) |
Security Audit Burden | High (your responsibility) | High (trust the public network) | Low (pre-audited, verifiable proofs) |
Data Privacy Guarantee | Custom (your implementation) | None (data is public) | Full (ZK-proofs hide inputs) |
Ongoing Maintenance & Updates | 2-3 FTEs (~$300K/yr) | Variable (network fees, risks) | Optional SLA ($20K-$80K/yr) |
Cross-Chain Support | Custom per chain (high effort) | Limited by public network | Native (EVM, L2s, non-EVM) |
SLA for Uptime & Latency | Your responsibility | Best-effort (no SLA) | 99.9% Uptime, <2s latency SLA |
Total Year 1 Cost (Est.) | $550K - $1M+ | $5K - $50K (usage fees) | $70K - $280K (all-in) |
Key Risk Profile | Technical debt, security flaws | Data leakage, front-running | Managed & insured |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A structured, security-first approach to delivering production-ready, privacy-preserving oracles that integrate seamlessly into your existing stack.
01
Architecture & Protocol Design
We design a custom ZK-proof circuit architecture tailored to your data sources and cross-chain requirements, ensuring optimal gas efficiency and privacy guarantees.
2-4 weeks
Design Phase
Circom/Noir
Circuit Language
02
Secure Smart Contract Development
Deployment of verifier contracts and on-chain adapters using battle-tested libraries like OpenZeppelin, with gas optimization for high-frequency data updates.
OpenZeppelin
Security Standard
99.9%
Test Coverage
04
Relayer & Infrastructure Deployment
Setup of high-availability relayers with multi-cloud redundancy, automated proof generation, and monitoring dashboards for 24/7 oracle performance.
99.9% SLA
Uptime
< 5 sec
Proof Latency
05
Cross-Chain Integration & Testing
End-to-end integration with your dApp across EVM and non-EVM chains (Solana, Cosmos), including comprehensive testnet simulations and load testing.
5+ Chains
Supported
Testnet
Full Simulation
06
Production Launch & Ongoing Support
Managed mainnet deployment with real-time monitoring, alerting, and dedicated developer support for upgrades and maintenance.
24/7
Support
1 hr
Response SLA
Tiered Implementation Packages
Technical Specifications & Deliverables
Compare our structured service packages for integrating a privacy-preserving cross-chain oracle with ZK-proofs, designed to meet the needs of projects from MVP to enterprise scale.
| Specification / Feature | Proof-of-Concept | Production-Ready | Enterprise Scale |
|---|---|---|---|
Zero-Knowledge Proof System | Groth16 (Single Chain) | Plonk / Halo2 (Multi-Chain) | Custom ZK-SNARK/STARK Circuit Design |
Supported Data Feeds | Price Oracles (3-5 assets) | Custom & Price Feeds (10+ assets) | Any Verifiable Off-Chain Data |
Supported Destination Chains | 1 EVM Chain | 3 EVM Chains (e.g., Ethereum, Polygon, Arbitrum) | Unlimited (EVM, non-EVM, L2s) |
Privacy Guarantee | Data Source Obfuscation | Full Request/Response Privacy | End-to-End Privacy with Custom Policies |
Throughput & Latency | ~100 req/day, < 5 min latency | 1,000+ req/day, < 30 sec latency | 10,000+ req/day, < 2 sec latency |
Security Audit | Automated Scan Report | Full Manual Audit by Partner Firm | Comprehensive Audit + Formal Verification |
Uptime SLA & Monitoring | Best Effort | 99.5% SLA, Basic Dashboard | 99.9% SLA, Advanced Analytics & Alerts |
Integration Support | Documentation & Examples | Dedicated Engineer (20 hrs) | Dedicated Technical Account Manager |
Implementation Timeline | 2-4 weeks | 6-8 weeks | Custom (8-12+ weeks) |
Estimated Cost | $25K - $50K | $80K - $150K | Custom Quote |
Privacy-Preserving Oracle Development
Frequently Asked Questions
Get clear answers on how our ZK-powered cross-chain oracle service works, from development timelines to security guarantees.
A standard deployment for a privacy-preserving cross-chain oracle with ZK-proofs takes 4-8 weeks. This includes design, smart contract development, zero-knowledge circuit implementation, integration testing, and deployment to mainnet. Complex multi-chain setups or novel data attestation logic may extend this timeline, which we scope and price accordingly during the initial discovery phase.
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