We architect and deploy custom smart contracts that form the backbone of your protocol. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit workflows to mitigate risk before deployment.
LABS
Services
Sybil Attack-Resistant Credit System
We design and deploy AI-hardened credit scoring architectures that detect coordinated fake identities and wallet clusters, ensuring your DeFi or lending protocol's risk models are based on real user behavior.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
- Token Standards:
ERC-20,ERC-721,ERC-1155, and custom implementations. - Protocol Logic: DEXs, staking pools, governance systems, and multi-signature wallets.
- Audit-Ready Code: Development includes inline documentation,
NatSpeccomments, and test coverage exceeding 90%. - Deployment & Verification: Full support for mainnet and testnet deployment with source code verification on Etherscan and equivalents.
We deliver contracts that are secure by design, reducing post-launch vulnerabilities and costly emergency patches. Our typical engagement delivers a production-ready MVP in 2-4 weeks.
key-features-cards
ARCHITECTURE
Core Components of a Hardened System
Our Sybil-resistant credit system is built on a multi-layered defense architecture, combining on-chain verification, off-chain analytics, and continuous monitoring to deliver a robust and reliable scoring mechanism.
03
Dynamic Reputation Scoring Engine
A proprietary algorithm that calculates a time-decayed reputation score based on verifiable activity, penalizing Sybil-like patterns (e.g., flash loan farming, airdrop hunting) and rewarding genuine, sustained participation.
04
Real-Time Anomaly Detection
Continuously monitors for coordinated attack patterns, sudden reputation inflation, and wallet clustering using machine learning models trained on historical Sybil attack data.
05
Modular Policy & Governance Layer
Allows protocols to define custom risk parameters, whitelist/blacklist rules, and scoring weights. Includes on-chain governance for transparent, community-driven updates to the credit model.
benefits
DELIVERING ACTIONABLE INSIGHTS
Business Outcomes: Trustworthy Risk Assessment
Our Sybil-resistant credit system transforms raw on-chain data into reliable risk signals, enabling data-driven decisions for lending, underwriting, and compliance.
01
Sybil-Resistant Identity Graphs
We map wallet clusters and behavioral patterns to identify unique entities, filtering out fake accounts and wash trading to provide a clear view of real user risk.
>90%
Sybil Detection Rate
Real-time
Graph Updates
02
On-Chain Reputation Scoring
Generate a holistic credit score based on transaction history, asset holdings, DeFi interactions, and governance participation—all weighted for Sybil resistance.
50+
Scoring Parameters
Custom Models
Tailored Weights
03
Real-Time Risk Monitoring
Continuously monitor wallet activity and portfolio changes. Receive instant alerts for suspicious behavior, collateral volatility, or creditworthiness shifts.
< 1 min
Alert Latency
24/7
Surveillance
04
Regulatory & Compliance Readiness
Our audit trails and entity-based reporting simplify KYC/AML processes and provide verifiable proof of risk assessment methodology for regulators.
FATF Compliant
Framework
Immutable Logs
Audit Trail
05
Portfolio-Level Exposure Analysis
Aggregate risk across your entire user base. Identify concentration risks, correlated defaults, and systemic vulnerabilities within your lending book or user pool.
Cross-Protocol
Risk View
Scenario Testing
Stress Models
06
API-First Integration
Seamlessly embed risk scores and alerts into your existing dashboards, smart contracts, or underwriting workflows with our developer-friendly REST and WebSocket APIs.
< 100ms
API Response
99.9% SLA
Uptime
Strategic Comparison
Build vs. Buy: Sybil Defense Options
Evaluating the total cost, risk, and time investment for implementing a robust Sybil-resistant credit system.
| Factor | Build In-House | Chainscore Professional | Chainscore Enterprise |
|---|---|---|---|
Time to Initial Deployment | 6-12 months | 4-8 weeks | 2-4 weeks |
Initial Development Cost | $150K-$400K+ | $50K-$150K | Custom |
Security Audit & Penetration Testing | Manual, additional $30K-$100K | Included (2 audits) | Included (3+ audits + bug bounty) |
Sybil Detection Models | Basic (e.g., PoW/PoS) | Advanced (Multi-Factor Graph Analysis) | Custom (AI/ML + On-Chain/Off-Chain Data) |
Ongoing Maintenance & Updates | 2-3 FTEs ($200K+/year) | Optional SLA from $20K/year | Fully Managed Service |
Uptime & Monitoring SLA | Self-managed (no SLA) | 99.5% | 99.9% with 24/7 SRE |
Integration Support | Your team | Dedicated Engineer | Dedicated Integration Team |
Total Year 1 Cost (Est.) | $350K-$700K+ | $70K-$170K | Custom (Predictable OpEx) |
Compliance & Reporting | Manual build required | Standard dashboards | Custom compliance reports & attestations |
how-we-deliver
A PROVEN FRAMEWORK
Our Methodology: From Assessment to Deployment
We deliver production-ready, Sybil-resistant credit systems through a structured, four-phase process designed for security, speed, and scalability.
01
1. Threat Modeling & System Design
We analyze your specific attack vectors and design a multi-layered defense strategy. This includes protocol selection (e.g., Semaphore, World ID), economic incentive modeling, and data source integration architecture.
5+
Defense Layers
2-3 days
Design Sprint
02
2. Core Protocol Development
Implementation of on-chain identity proofs, reputation accrual logic, and credit scoring algorithms. Built with Solidity 0.8+ and OpenZeppelin standards, featuring gas-optimized state management.
100%
Coverage Audits
< 0.01 ETH
Avg. User Cost
03
3. Security Audits & Penetration Testing
Rigorous third-party audits by firms like Trail of Bits or Quantstamp, followed by internal penetration testing focused on Sybil simulation and economic exploit scenarios.
2+
Audit Rounds
0 Critical
Guaranteed Findings
04
4. Deployment & Monitoring
Managed deployment to mainnet or L2 (Arbitrum, Optimism) with real-time monitoring dashboards. We provide 24/7 alerting for anomalous Sybil-like behavior and system health.
99.9%
Uptime SLA
< 2 weeks
Full Deployment
security-approach
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
Build secure, scalable blockchain networks and protocols tailored to your business logic.
We architect and deploy bespoke blockchain solutions from the ground up, delivering production-ready mainnets, sidechains, and L2 networks. Our full-cycle development ensures your protocol is built for scale, security, and interoperability from day one.
- Custom Consensus & EVM Compatibility: Design
Proof-of-Stake,Proof-of-Authority, or hybrid consensus models. We ensure seamless EVM compatibility for broad dApp support. - End-to-End Protocol Design: From tokenomics and governance to node infrastructure and block explorers. We handle the full stack, including RPC endpoints, indexers, and cross-chain bridges.
- Security-First Development: Every line of code undergoes rigorous audits against reentrancy, oracle manipulation, and governance attacks, following OpenZeppelin standards.
Deploy a custom, audited testnet in under 6 weeks, with a clear path to mainnet launch and validator onboarding.
Our engineers specialize in Substrate, Cosmos SDK, and Polygon CDK for maximum flexibility. We provide ongoing node operation, monitoring, and upgrade management post-launch, guaranteeing 99.9% uptime SLAs for your core infrastructure.
Sybil-Resistant Credit Systems
Frequently Asked Questions
Get clear answers on how we build secure, scalable credit infrastructure for Web3 applications.
Our systems combine on-chain transaction analysis with off-chain identity verification to create a holistic credit profile. Key components include: a Reputation Oracle that aggregates on-chain history (wallet age, transaction volume, DeFi interactions), a Proof-of-Humanity layer (using tools like World ID or BrightID) to prevent bot farms, and a custom scoring algorithm that weights these signals. The final score is issued as a non-transferable soulbound token (SBT) or verifiable credential, enabling permissionless underwriting for lending, airdrops, and governance.
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