We architect and deploy custom smart contracts that power your token, DeFi protocol, or NFT platform. Our development process is built on audited security patterns and gas optimization from day one.
LABS
Services
Cross-Chain Identity Attestation Service
Build infrastructure to issue, attest, and verify user identity credentials across multiple blockchain ecosystems. Solve user profile interoperability for DeFi, gaming, and enterprise with IBC, XCM, and AI-enhanced verification.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- Security-First Development: Built with
Solidity 0.8+andOpenZeppelinlibraries, following formal verification principles. - Full-Stack Integration: Contracts are designed to work seamlessly with your front-end and backend, including indexers and oracles.
- Compliance Ready: Implement
ERC-20,ERC-721, or custom standards with built-in features for regulatory adherence. - Deployment & Verification: We handle deployment to mainnet/testnets and provide public source code verification.
Deliver a market-ready, auditable contract suite in as little as 3 weeks, reducing your time-to-market and technical risk.
key-features-cards
END-TO-END SOLUTION
Core Infrastructure Components We Deliver
We architect and deploy the complete technical stack for secure, portable identity. Each component is built to enterprise-grade standards, ensuring interoperability, compliance, and seamless user experience.
04
Credential Verification Engine
High-performance off-chain service for instant validation of credential signatures, revocation status, and schema compliance. Delivers sub-100ms API responses with 99.9% uptime SLA for critical KYC/AML checks.
99.9%
Uptime SLA
< 100ms
P95 Latency
05
Issuer Governance Dashboard
A secure admin portal for authorized entities to manage attestation schemas, monitor issuance volume, handle revocation requests, and audit credential lifecycle events with full compliance logging.
RBAC & 2FA
Security
SOC 2 Type II
Compliance
benefits
ENTERPRISE VALUE
Business Outcomes: Why Interoperable Identity Matters
Cross-chain identity unlocks tangible business advantages beyond technical integration. Here's how our attestation service delivers measurable ROI and strategic flexibility for your product.
01
Expand User Base Without Friction
Enable users from any EVM or non-EVM chain to onboard with their existing verified identity. Eliminate the need for redundant KYC/AML checks per chain, reducing signup drop-off by up to 70%.
70%
Lower Drop-off
Any Chain
Onboarding
02
Secure Multi-Chain Compliance
Maintain a single, auditable source of truth for user credentials across all your deployments. Our service provides a compliance-grade attestation log, simplifying regulatory reporting for MiCA, FATF Travel Rule, and other frameworks.
FATF / MiCA
Compliance Ready
Immutable Log
Audit Trail
03
Reduce Operational Overhead
Consolidate identity management infrastructure. Instead of managing separate verification systems per chain, leverage our unified API, cutting development and maintenance costs by an average of 60%.
60%
Cost Reduction
Unified API
Single Integration
04
Accelerate Time-to-Market
Launch on new blockchain networks in days, not months. Our pre-built connectors for Ethereum, Solana, Polygon, and other L2s let you deploy with verified users from day one, bypassing the identity bootstrapping phase.
< 2 weeks
New Chain Launch
Pre-built
Chain Connectors
05
Enable Cross-Chain Loyalty & Governance
Create unified reputation systems, airdrops, and DAO voting rights that recognize user activity and status across your entire multi-chain ecosystem, increasing engagement and token utility.
Portable Reputation
User Benefit
Unified DAO
Governance
06
Future-Proof Your Architecture
Built on open standards (W3C Verifiable Credentials, EIP-712) with a modular design. Easily integrate emerging identity protocols (e.g., Polygon ID, zkPass) without costly re-engineering.
W3C / EIP-712
Open Standards
Modular
Design
Structured Roadmap for Cross-Chain Identity
Phased Development Tiers
A modular approach to implementing decentralized identity attestation, from foundational proofs to full-scale interoperability.
| Feature / Capability | Phase 1: Foundational | Phase 2: Interoperable | Phase 3: Autonomous |
|---|---|---|---|
Core Attestation Protocol | |||
On-Chain Verifiable Credentials | |||
Multi-Chain Identity Resolution (2-3 chains) | |||
Universal Resolver Support (5+ chains) | |||
Gasless Claim & Verification | |||
Custom Attestation Schema Design | Basic | Advanced | Full Custom |
Integration Support | Documentation & Examples | Guided Implementation | Dedicated Engineer |
SLA & Monitoring | Community Support | Business Hours | 24/7 with 1hr Response |
Estimated Timeline | 4-6 weeks | 8-12 weeks | 12+ weeks |
Typical Investment | $25K - $50K | $75K - $150K | Custom Quote |
how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE
Our Delivery Process: From Audit to Mainnet
A structured, milestone-driven approach to deliver production-ready cross-chain identity attestation. We de-risk your launch with expert audits, rigorous testing, and seamless deployment support.
01
Architecture & Specification
We design a tailored attestation architecture, selecting optimal protocols (e.g., IBC, Axelar, LayerZero) and defining your credential schema (W3C VC, EIP-712). This phase establishes the technical blueprint and success criteria.
1-2 weeks
Design Phase
3+ protocols
Architecture Review
02
Smart Contract Development
Our engineers build and optimize your core attestation logic and registry contracts using Solidity 0.8+ and OpenZeppelin libraries. We implement gas-efficient verification and secure cross-chain message handling.
2-4 weeks
Development Sprint
OpenZeppelin
Security Standard
03
Security Audit & Penetration Testing
Every line of code undergoes a multi-layered security review. We conduct internal audits, followed by optional integration with leading third-party firms like CertiK or Halborn to ensure institutional-grade security.
2+ audits
Security Layers
Zero Critical
Guarantee
04
Testnet Deployment & Simulation
We deploy your system on designated testnets (e.g., Sepolia, Arbitrum Goerli) and execute comprehensive integration tests, including failure mode simulations and load testing under high transaction volumes.
>10k TPS
Load Tested
Full E2E
Integration Suite
05
Mainnet Launch & Monitoring
We manage the production deployment, configure secure multi-sig governance, and establish 24/7 monitoring with alerting for attestation volume, bridge security, and contract health metrics.
99.9% SLA
Uptime
< 1 hour
Incident Response
06
Ongoing Support & Upgrades
Receive continuous support, including protocol upgrades, integration of new chains, and attestation schema evolution. We ensure your system remains secure and interoperable as the ecosystem evolves.
24/7
Developer Support
Quarterly
Security Reviews
security
CORE ENGINEERING
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom smart contracts that form the immutable backbone of your application. Our development process is built for security and scale from day one, ensuring your core logic is robust and future-proof.
From tokenomics to complex DeFi logic, we translate your business requirements into efficient, gas-optimized code.
- Security-First Development: Built on
Solidity 0.8+withOpenZeppelinstandards, followed by rigorous internal audits and formal verification tools. - Full-Stack Integration: Contracts are delivered with comprehensive test suites and ready-to-use interfaces for your frontend and backend teams.
- Protocol Specialization: Expertise in
ERC-20,ERC-721,ERC-1155, staking mechanisms, automated market makers (AMMs), and cross-chain bridges.
Cross-Chain Identity
Frequently Asked Questions
Get clear answers on our attestation service's security, integration, and support.
Cross-chain identity attestation is a service that issues and verifies portable, verifiable credentials (like KYC/AML status, reputation scores, or access permissions) that are valid across multiple blockchain networks. It solves the problem of fragmented user identity and compliance, where credentials issued on one chain (e.g., Polygon) are not recognized on another (e.g., Arbitrum). This is essential for DeFi protocols, DAOs, and gaming platforms to onboard users once, ensure regulatory compliance, and enable seamless, permissioned interactions across the entire ecosystem without redundant checks.
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