We architect and deploy production-grade smart contracts that are secure by design and cost-efficient to run. Our process delivers battle-tested code, not just prototypes.
LABS
Services
ZK-Rollup Oracle Data Attestation
We design and implement zero-knowledge proof circuits and attestation protocols to cryptographically verify the integrity and provenance of off-chain data before it is committed to a Bitcoin ZK-rollup or validity-proof layer.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, gas-optimized smart contracts built by Web3-native engineers.
- Full-Stack Development: From
ERC-20tokens to complexDeFiprotocols andNFTmarketplaces. - Security-First: Rigorous audits using industry-standard tools and manual review to prevent exploits.
- Gas Optimization: Every line of
Solidityis optimized to reduce user transaction fees by up to 40%. - End-to-End Delivery: Complete with deployment scripts, verification, and documentation.
We don't just write code; we deliver a secure, auditable, and maintainable foundation for your on-chain product.
key-features-cards
ENTERPRISE-GRADE ORACLE DATA VERIFICATION
Core Capabilities of Our ZK Attestation Service
Our service provides cryptographic proof that off-chain data is accurate and tamper-proof before it reaches your ZK-rollup, eliminating a critical trust assumption in your DeFi or Web3 application's architecture.
01
Cryptographic Data Integrity Proofs
We generate succinct zero-knowledge proofs that attest to the correctness of price feeds, RNG outputs, and API data. This provides mathematically verifiable assurance that data has not been manipulated between the source and your smart contract.
256-bit
Security Level
On-chain
Verification
02
Multi-Source Aggregation & Validation
Integrate data from 10+ premium and decentralized sources (Chainlink, Pyth, API3). Our attestation layer cryptographically validates the aggregation logic, ensuring the final value is a robust, manipulation-resistant consensus.
10+
Data Sources
< 1 sec
Aggregation
03
Gas-Optimized On-Chain Verification
Our attestation proofs are designed for efficient verification within ZK-rollup circuits or on L1. We use custom Plonk/Halo2 circuits and Groth16 verifiers to minimize the gas cost of proving data authenticity for your users.
< 200k
Gas per Verify
Plonk/Halo2
Proof System
04
Continuous Security Audits & Monitoring
Our attestation circuits and infrastructure undergo regular audits by firms like Trail of Bits. We provide 24/7 monitoring for data source liveness and proof generation integrity, with automated failover.
99.95%
Uptime SLA
Trail of Bits
Audit Partner
05
Custom Attestation Logic Development
Need to prove a complex off-chain computation? We build custom ZK circuits for your specific business logic—from TWAP calculations to credit scoring—enabling verifiable off-chain execution for your app.
4-6 weeks
Delivery Time
Custom Circuits
Deliverable
benefits
ENTERPRISE-GRADE ORACLE INFRASTRUCTURE
Why Build with Chainscore's ZK Attestation
Deploy a production-ready, cryptographically verifiable bridge between off-chain data and your on-chain ZK-Rollup. Our attestation service provides the data integrity and finality guarantees required for high-value DeFi, RWA, and institutional applications.
01
Cryptographic Data Integrity
Every data point is signed and attested with zero-knowledge proofs, providing immutable, on-chain verification of off-chain source authenticity. Eliminate oracle manipulation risks for critical price feeds and settlement data.
100%
Verifiable Provenance
02
Sub-Second Finality for L2s
ZK-proofs are generated and verified on-chain in under 500ms, matching the performance requirements of modern ZK-Rollups like zkSync, StarkNet, and Polygon zkEVM. No more waiting for L1 confirmation delays.
< 500ms
Attestation Latency
03
Reduced Operational Overhead
We manage the entire attestation stack—data sourcing, proof generation, and on-chain verification—so your team can focus on core application logic. Slash months off your development timeline.
4-6 weeks
Integration Timeline
04
Cost-Efficient Data Feeds
Aggregate and attest data from multiple premium sources (Chainlink, Pyth, custom APIs) into a single, gas-optimized ZK-proof. Pay for one verified feed instead of multiple individual oracle subscriptions.
40-60%
Oracle Cost Reduction
06
Built for Composability
Standardized attestation outputs (ERC-3668) ensure your verified data is instantly usable across the DeFi ecosystem. Enable seamless integration with DEXs, lending protocols, and derivative platforms.
ERC-3668
Compliance Standard
Architectural Comparison
ZK Attestation vs. Traditional Oracle Feeds
A technical breakdown of how Chainscore's ZK-Rollup Oracle Data Attestation provides superior security, cost-efficiency, and performance for on-chain applications compared to conventional oracle models.
| Architectural Feature | Traditional Oracle Feeds | Chainscore ZK Attestation |
|---|---|---|
Data Integrity Proof | ||
On-Chain Data Footprint | Large (full data) | Minimal (ZK proof only) |
Gas Cost per Update | High ($50-$500+) | Low (<$10) |
Trust Assumption | Trusted committee/operator | Trustless cryptographic proof |
Finality & Latency | Minutes to hours | Sub-second (rollup finality) |
Data Source Flexibility | Limited to API/centralized | Any verifiable data source |
Security Model | Economic/Reputation-based | Cryptographic (ZK-SNARKs/STARKs) |
Auditability | Opaque aggregation | Fully verifiable proof trace |
Implementation Timeline | 3-6 months (integration) | 4-8 weeks (full deployment) |
Total Cost of Ownership (Year 1) | $100K-$300K+ | $50K-$150K |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A streamlined, security-first approach to deliver production-ready ZK-Rollup oracles. We focus on rapid integration and guaranteed performance, ensuring your data layer is a competitive advantage.
06
Monitoring, Maintenance & SLAs
We provide 24/7 monitoring dashboards, alerting, and incident response. Our service includes a 99.9% uptime SLA for data attestation and proof submission.
99.9%
Attestation Uptime SLA
< 5 sec
Median Proof Time
security-approach
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production by expert Solidity engineers.
We deliver production-ready smart contracts on EVM and Solana that are secure by design. Our process includes formal verification and multiple audit stages before mainnet deployment.
Reduce your time-to-market from months to weeks with our battle-tested development framework.
- Custom Logic:
ERC-20,ERC-721,ERC-1155, staking, governance, and bespoke DeFi primitives. - Security First: Built with
OpenZeppelinstandards and proprietary security patterns. - Full Lifecycle: Development, testing, deployment, and upgrade management via
Proxypatterns.
ZK-Rollup Oracle Data Attestation
Frequently Asked Questions
Get clear answers on how we deliver secure, verifiable off-chain data to your rollup's execution environment.
A standard implementation for a single data feed takes 2-3 weeks from kickoff to mainnet deployment. This includes requirements analysis, circuit design, integration testing, and security review. Complex multi-feed systems with custom logic can extend to 4-6 weeks. We provide a detailed project plan with weekly milestones.
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