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Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

Multi-Chain Sybil-Resistant SDK Development

We build custom SDKs that enable your dApp to deploy a unified, verifiable Sybil-resistance layer across Ethereum, Solana, Polygon, and other L2s from a single codebase.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for speed and compliance.

We architect and deploy custom smart contracts that power your core business logic. Our team specializes in Solidity 0.8+ and Rust, implementing battle-tested patterns from OpenZeppelin and Solana Program Library to ensure security and gas efficiency from day one.

  • From MVP to Mainnet: Go from concept to a fully audited, deployable contract in 2-4 weeks.
  • Security-First: Every line undergoes peer review and is built for formal verification with tools like Slither and Mythril.
  • Cross-Chain Ready: Deployments optimized for EVM chains (Ethereum, Polygon, Arbitrum) and Solana.

We don't just write code; we deliver the immutable foundation for your token, DeFi protocol, or NFT platform with a 100% security audit track record.

key-features-cards
BUILT FOR PRODUCTION

Core SDK Capabilities We Deliver

Our Multi-Chain Sybil-Resistant SDK is engineered to provide the foundational security and interoperability your application requires. Each component is built, tested, and audited for enterprise-grade reliability.

benefits
MEASURABLE RESULTS

Business Outcomes: From Integration to Impact

Our Multi-Chain Sybil-Resistant SDK delivers concrete, quantifiable value from day one. We focus on outcomes that accelerate your time-to-market, reduce operational overhead, and secure your user base.

01

Rapid Protocol Integration

Integrate our SDK and launch your sybil-resistant feature in under 2 weeks. We provide battle-tested modules for EVM chains (Ethereum, Polygon, Arbitrum) and Solana, with pre-configured attestation logic.

< 2 weeks
Time to Launch
5+
Supported Chains
02

Reduced Fraud & Airdrop Costs

Cut airdrop waste and bot-driven fraud by over 90%. Our on-chain reputation scoring and multi-factored attestation prevent duplicate accounts and sybil attacks, ensuring rewards reach real users.

> 90%
Fraud Reduction
$0.001
Avg. Attestation Cost
03

Scalable, Maintainable Architecture

Future-proof your application with a modular SDK built on OpenZeppelin standards and TypeScript. We deliver clean, documented code with upgrade patterns, reducing your long-term maintenance burden.

99.9%
Uptime SLA
24/7
Dev Support
04

Compliance & Audit Readiness

Build with confidence using our audit-ready smart contracts and SDK components. Our development follows security best practices, making third-party audits by firms like Trail of Bits or CertiK faster and more cost-effective.

100%
Test Coverage
Zero
Critical Bugs Shipped
Choose Your Integration Path

Structured Development Tiers

Select the tier that matches your project's scale, security requirements, and go-to-market timeline for our Multi-Chain Sybil-Resistant SDK.

Feature / SpecificationStarterProfessionalEnterprise

SDK Core Library & API

Multi-Chain Support (EVM)

Ethereum Mainnet

Ethereum, Polygon, Arbitrum, Base

All EVM L1/L2 + Custom RPC

Sybil-Resistant Algorithms

Basic Proof-of-Humanity

Advanced Reputation + Proof-of-Humanity

Custom Algorithm Design

Smart Contract Integration Kit

Security Audit (by Partner Firm)

Basic Review

Full Audit Report

Full Audit + Continuous Monitoring

Deployment & Configuration Support

Documentation Only

Guided Setup & 2 Sprints

Dedicated Engineer & Architecture Review

Response Time SLA

Best Effort

< 24 Business Hours

< 4 Hours, 24/7

Uptime & Performance SLA

99.5%

99.9%

Custom Feature Development

Up to 2 Features

Roadmap Collaboration

Typical Time to Integration

2-4 Weeks

4-8 Weeks

8-12+ Weeks

Starting Price

$15K

$50K

Custom Quote

how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE

Our Delivery Process: From Spec to Production

We deliver production-ready, sybil-resistant SDKs through a rigorous, client-aligned process. Our phased approach ensures technical excellence, security, and seamless integration into your existing stack.

01

Phase 1: Discovery & Architecture

We conduct a deep technical discovery to define your multi-chain strategy, threat model, and SDK architecture. Deliverables include a detailed technical specification, integration roadmap, and a prioritized feature backlog.

1-2 weeks
Duration
100%
Spec Alignment
02

Phase 2: Core SDK Development

Our engineers build the core sybil-resistance logic (e.g., proof-of-personhood, stake-based weighting) and multi-chain adapters for your target networks (EVM, Solana, Cosmos). All code follows security-first patterns.

4-6 weeks
Typical Build
OpenZeppelin
Security Standard
04

Phase 4: Integration & Testing

We provide a staging SDK package and dedicated support to integrate it into your dApp. We conduct load testing, cross-chain simulation, and user scenario validation.

1-2 weeks
Integration Support
99.9%
Test Coverage
06

Phase 6: Ongoing Maintenance

Optional retainer for protocol upgrades, new chain integrations, and continuous security monitoring. We ensure your sybil resistance stays effective as the ecosystem evolves.

24/7
Monitoring
< 48h
Patch Response
tech-stack
ENGINEERED FOR TRUST & SCALE

Built on Proven Protocols & Standards

Our SDK leverages battle-tested cryptographic primitives and industry-standard frameworks, ensuring your application inherits enterprise-grade security and interoperability from day one.

Multi-Chain Sybil-Resistant SDK

Frequently Asked Questions

Get clear answers on our development process, security, and timelines for building your custom SDK.

A production-ready, audited SDK for 2-3 target chains typically takes 4-6 weeks. This includes design, core development, integration testing, and a full security audit. For more complex deployments (5+ chains, custom consensus mechanisms), timelines extend to 8-12 weeks. We provide a detailed sprint-by-sprint roadmap during the initial scoping phase.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
Multi-Chain Sybil-Resistant SDK | Chainscore Labs | ChainScore Guides