We architect and deploy custom smart contracts on EVM chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process ensures security-first logic, gas optimization, and seamless integration with your frontend.
LABS
Services
ZK-Rollup Privacy-Preserving Reputation Aggregation
We design and deploy custom Layer-2 systems that aggregate user reputation from off-chain sources and submit a ZK-proof of the computed score, enabling compliant, verifiable identity without exposing sensitive data.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your dApp.
- End-to-End Development: From specification and
Solidity/Rustcoding to testing and mainnet deployment. - Security & Audits: Built with
OpenZeppelinstandards, followed by internal review and preparation for third-party audits. - Key Deliverables:
ERC-20,ERC-721,ERC-1155tokens, DeFi protocols (DEX, lending/borrowing), and custom business logic.
Reduce your time-to-market with a 2-4 week MVP delivery cycle and contracts designed for future upgrades.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Architecture & Capabilities
Our ZK-Rollup reputation system is built on a modular, audited architecture designed for high-throughput applications. We deliver production-ready infrastructure with verifiable security and performance guarantees.
01
Zero-Knowledge Proof Generation
Privacy-preserving computation that aggregates user reputation signals without exposing raw data. Built on Plonk-based circuits for optimal proving time and verification cost.
- Client Value: Enable sensitive data analysis while maintaining user privacy and regulatory compliance (GDPR, CCPA).
< 2 sec
Proof Generation
Plonk/STARK
Proof System
02
Customizable Reputation Logic
Flexible, on-chain scoring models tailored to your use case—DeFi creditworthiness, DAO governance, or social credentials. Deploy custom logic as verifiable circuits.
- Client Value: Rapidly adapt reputation algorithms to market needs without rebuilding core infrastructure.
ERC-20/721/1155
Token Standards
Solidity 0.8+
Core Language
03
High-Throughput Data Rollup
Scalable L2 settlement that batches thousands of reputation updates into a single ZK-proof, reducing mainnet gas costs by 95%+. Supports Ethereum, Polygon, and Arbitrum.
- Client Value: Achieve sub-cent transaction costs and sub-second finality for mass adoption scenarios.
> 2,000 TPS
Peak Throughput
95%+
Gas Savings
05
Real-Time Oracle Integration
Secure data ingestion from on-chain (DeFi activity, NFT holdings) and off-chain sources (KYC providers, social graphs) via Chainlink and custom oracles.
- Client Value: Build comprehensive reputation models using verified, tamper-proof data feeds.
10+ Sources
Supported Oracles
< 1 sec
Data Latency
06
Managed Infrastructure & SLA
Fully hosted node operations with 99.9% uptime SLA, automated backups, and 24/7 monitoring. Includes prover/verifier scaling and mainnet bridge management.
- Client Value: Eliminate DevOps overhead and ensure system reliability with enterprise-grade support.
99.9%
Uptime SLA
< 4 weeks
Production Deployment
benefits
DELIVERABLES
Business Outcomes for Regulated Web3 Applications
Our ZK-Rollup Privacy-Preserving Reputation Aggregation service delivers concrete, measurable results for compliance-first businesses. We focus on outcomes that accelerate your go-to-market and build user trust.
02
Reduced On-Chain Gas Costs
Aggregate thousands of user reputation signals off-chain and submit a single ZK-proof to the L1. Achieve >95% reduction in gas fees compared to on-chain reputation updates, making your application economically viable at scale.
>95%
Gas Cost Reduction
1 tx
Per Batch
03
Sub-Second User Experience
Users see instant reputation updates within the ZK-Rollup, with finality secured on Ethereum. Eliminate the 12-second block wait, enabling real-time, gamified, or trading-based reputation systems.
< 1 sec
Update Latency
Ethereum
Finality Security
05
Faster Time-to-Market
Leverage our pre-built, modular circuits for common reputation primitives (weighted averages, time decay). Go from concept to a production-ready, private reputation layer in 4-6 weeks, not months.
4-6 weeks
To Production
Modular
Circuit Library
06
Cross-Protocol Reputation Portability
Design reputation as a portable asset. Our architecture allows users to leverage their verified, private reputation score across multiple dApps and chains, increasing utility and user lock-in for your ecosystem.
Strategic Decision Analysis
Build vs. Buy: ZK Reputation System Development
A detailed comparison of the resource investment, risk, and time required to develop a privacy-preserving reputation aggregation system in-house versus partnering with Chainscore Labs.
| Factor | Build In-House | Partner with Chainscore |
|---|---|---|
Time to Production | 6-12+ months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $75K - $200K |
Core Team Required | 3-5 Senior ZK Engineers | Your Product Team |
Security Audit & Risk | High (Custom, unaudited code) | Low (Pre-audited, battle-tested circuits) |
Ongoing Maintenance | Full-time DevOps & Cryptography team | Managed Service with optional SLA |
ZK Circuit Expertise | Must hire/build internally | Included (Team of PhDs) |
Supported Protocols | Custom implementation only | Ethereum, Polygon, zkSync, Scroll, Starknet |
Feature Roadmap Velocity | Dependent on internal bandwidth | Continuous upgrades included |
Total Cost of Ownership (Year 1) | $500K - $1.2M+ | $150K - $350K |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Delivery Process: From Specification to Mainnet
A structured, milestone-driven approach to deliver your ZK-Rollup privacy-preserving reputation system on time and to spec. We provide clear deliverables at each stage, from initial design to production deployment.
01
1. Architecture & Specification
We define the system architecture, data models, and privacy requirements. Deliverables include a technical specification document, circuit design for zero-knowledge proofs, and a detailed project roadmap.
2-3 weeks
Phase Duration
100%
Spec Sign-Off
02
2. Core Circuit & Contract Development
Development of the core ZK-SNARK/STARK circuits for reputation aggregation and the on-chain verifier/settlement contracts. Built with Circom/Halo2 and Solidity 0.8+ using OpenZeppelin libraries.
4-6 weeks
Phase Duration
Gas-Optimized
Verifier Contract
03
3. Security Audit & Penetration Testing
Comprehensive third-party audit of all smart contracts and ZK circuits. We engage with leading security firms like Trail of Bits or Quantstamp and provide a full remediation report.
3-4 weeks
Phase Duration
Critical: 0
Audit Findings Target
04
4. Testnet Deployment & Integration
Deploy the full stack to a testnet (e.g., Sepolia, Holesky). We conduct integration testing with your front-end, load testing the prover, and simulate mainnet conditions.
2 weeks
Phase Duration
> 99.9%
Testnet Uptime
05
5. Mainnet Launch & Monitoring
Managed deployment to mainnet (Ethereum, Arbitrum, etc.) with phased roll-out. We establish 24/7 monitoring, alerting, and provide a production runbook for your team.
1 week
Go-Live Period
SLA Backed
Post-Launch Support
06
6. Documentation & Knowledge Transfer
We deliver comprehensive technical documentation, admin guides, and conduct workshops with your engineering team to ensure full ownership and operational independence.
Ongoing
Support Window
Full Source
Code Handover
Solution Tiers
ZK-Rollup Reputation Aggregation: Technical Specifications & Deliverables
Compare our modular service tiers for implementing privacy-preserving reputation aggregation with ZK-Rollups.
| Feature / Specification | Starter | Professional | Enterprise |
|---|---|---|---|
Zero-Knowledge Circuit Development | |||
Custom Reputation Logic (Solidity) | Basic Scoring | Multi-Factor Model | Fully Custom |
Supported Rollups | One (Your Choice) | Up to 3 (EVM-compatible) | Any EVM/ZKVM (Custom Bridge) |
On-Chain Verifier Smart Contracts | |||
Smart Contract Security Audit | Basic Review | Full Audit Report | Full Audit + Formal Verification |
Data Attestation Gateway API | |||
Deployment & Integration Support | Documentation | Guided Setup | Full Implementation |
Uptime & Performance SLA | 99.5% | 99.9% | |
Proactive Monitoring & Alerts | |||
Incident Response Time | Best Effort | < 12 hours | < 1 hour (24/7) |
Ongoing Maintenance & Upgrades | Self-Managed | Included (1 Year) | Fully Managed |
Estimated Implementation Timeline | 6-8 weeks | 8-12 weeks | 12-16 weeks |
Starting Price | $75,000 | $200,000 | Custom Quote |
ZK-Rollup Reputation
Frequently Asked Questions
Get clear answers on how we deliver enterprise-grade, privacy-preserving reputation systems for your Web3 application.
We follow a structured 4-phase methodology: 1) Discovery & Design (1-2 weeks) to define reputation models and privacy requirements. 2) Core Development (3-5 weeks) building the ZK circuits and smart contracts. 3) Integration & Testing (2-3 weeks) for on-chain deployment and security audits. 4) Launch & Support with 90 days of post-launch monitoring. We provide weekly sprint demos and maintain a single point of contact for your team.
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