We architect and deploy production-grade smart contracts that form the backbone of your protocol. Our development process ensures security-first design, gas efficiency, and comprehensive audit readiness from day one.
LABS
Services
Cross-Chain Storage Attestation Systems
We design and implement cryptographic verification layers that generate and relay attestations of data integrity across Cosmos, Ethereum, and other ecosystems, providing a single source of truth for multi-chain applications.
Chainscore © 2026
overview
CORE INFRASTRUCTURE
Smart Contract Development
Secure, gas-optimized smart contracts built by Web3-native engineers.
From tokenomics to complex DeFi logic, we translate your business requirements into immutable, on-chain code.
- Protocol Development: Custom
ERC-20,ERC-721,ERC-1155tokens, DEXs, lending/borrowing platforms, and DAO frameworks. - Security & Audits: Built with
OpenZeppelinstandards, formal verification, and pre-audit by our internal security team. - Gas Optimization: Expert-level Solidity to minimize transaction costs and maximize user savings.
- Full Lifecycle Support: Development, testing (
Hardhat/Foundry), deployment, and post-launch monitoring.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Attestation Systems
Our cross-chain storage attestation systems provide the cryptographic backbone for secure, verifiable, and interoperable data across any blockchain. Built for production at scale.
01
Cryptographic Proof Generation
Generate verifiable, on-chain proofs for any data stored off-chain or on another ledger. Supports Merkle proofs, zk-SNARKs, and BLS signatures for maximum flexibility and minimal on-chain footprint.
< 2 sec
Proof Generation
256-bit
Security
02
Multi-Chain Attestation Relay
Securely relay and verify attestations across 15+ EVM and non-EVM chains (Ethereum, Polygon, Arbitrum, Solana, Cosmos). Our lightweight relayers ensure finality and prevent double-spend attacks.
15+
Supported Chains
99.9%
Relay Uptime SLA
03
State Synchronization & Finality
Guarantee data consistency with real-time state synchronization. Our systems monitor source chain finality to prevent reorg attacks, ensuring your attestations are immutable and final.
Real-time
Sync
0 Reorgs
Guarantee
04
Gas-Optimized Verification
On-chain verification contracts are meticulously gas-optimized, reducing your operational costs by up to 70% compared to generic implementations. Built with Solidity 0.8+ and OpenZeppelin.
~70%
Gas Savings
OpenZeppelin
Audited Base
05
Decentralized Watchtower Network
A fault-tolerant network of watchtower nodes monitors and challenges invalid attestations. Eliminates single points of failure and provides cryptographic security for your bridged assets or data.
Fault-Tolerant
Architecture
24/7
Monitoring
benefits
DELIVERING TANGIBLE ROI
Business Outcomes: From Technical Feature to Competitive Advantage
Our Cross-Chain Storage Attestation System translates complex cryptographic proofs into measurable business results. We deliver the infrastructure that lets you build, scale, and win.
01
Unified Asset & Data Portability
Enable seamless movement of tokens and verifiable data across Ethereum, Solana, and other major L1/L2s. Break down liquidity silos and create a frictionless user experience that drives adoption and volume.
10+
Supported Chains
< 3 min
Attestation Finality
02
Provably Secure State Verification
Leverage zero-knowledge proofs and optimistic verification to attest to on-chain state without trust assumptions. Build DeFi protocols, gaming economies, and enterprise solutions with cryptographic guarantees.
100%
Uptime SLA
Formally Verified
Core Circuits
03
Accelerated Time-to-Market
Deploy a production-ready cross-chain system in weeks, not months. Our modular SDKs and managed relayers eliminate the need for in-house protocol expertise, reducing development costs by up to 70%.
< 4 weeks
To Production
5+
Pre-built Integrations
04
Enterprise-Grade Compliance & Audit Trail
Generate immutable, verifiable attestation logs for every cross-chain transaction. Meet regulatory requirements for auditability and provenance, enabling institutional adoption of your multi-chain application.
Immutable
Proof Ledger
SOC 2
Compliance Ready
Cross-Chain Storage Attestation Systems
Build vs. Buy: Partnering vs. Building In-House
A detailed comparison of the costs, risks, and resource allocation required to build a cross-chain storage attestation system internally versus partnering with Chainscore Labs.
| Key Factor | Build In-House | Partner with Chainscore |
|---|---|---|
Time to Production | 6-12+ months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $75K - $200K |
Security Audit Burden | High (unaudited, custom risk) | Low (pre-audited, battle-tested patterns) |
Core Team Required | 3-5 Senior Blockchain Engineers | 1 Integration Lead |
Ongoing Maintenance & Updates | Your team (2+ FTE) | Fully Managed Service (Optional SLA) |
Protocol & Chain Support | Manual integration per chain | Pre-built adapters for 15+ L1/L2s |
Attestation Proof Verification | Custom implementation | Standardized ZK/optimistic proofs |
Total Cost of Ownership (Year 1) | $500K - $1.2M+ | $150K - $350K |
Time-to-First-Attestation |
| < 2 weeks |
how-we-deliver
PROVEN PROCESS
Our Delivery Methodology: From Specification to Mainnet
A structured, transparent approach to delivering production-ready cross-chain attestation systems. We de-risk your project with clear phases, expert execution, and guaranteed outcomes.
01
Phase 1: Architecture & Specification
We define your attestation logic, data schemas, and target chains (e.g., Ethereum, Arbitrum, Polygon). Deliverables include a technical specification document and a detailed system architecture diagram.
Client Value: Eliminates scope creep, aligns all stakeholders, and establishes a clear development roadmap from day one.
1-2 weeks
Typical Duration
100%
Specification Clarity
02
Phase 2: Core Smart Contract Development
Development of the on-chain attestation registry and verification logic using Solidity 0.8+ with OpenZeppelin security patterns. Includes comprehensive unit and integration testing.
Client Value: Secure, gas-optimized, and upgradeable contracts that form the immutable trust layer of your system.
3-4 weeks
Development Time
0 Critical
Audit Findings Target
03
Phase 3: Relayer & Oracle Network Setup
Deployment of the off-chain infrastructure that listens for events, generates proofs, and submits attestations. Configured for high availability and multi-chain support.
Client Value: A resilient, scalable backend that guarantees data availability and timely attestation across all supported chains.
99.9%
Uptime SLA
< 2 sec
Attestation Latency
05
Phase 5: Testnet Deployment & Staging
Full deployment to testnets (Sepolia, Holesky, Arbitrum Sepolia) with end-to-end integration testing. We simulate mainnet conditions and load to validate performance.
Client Value: A fully functional staging environment for your team to test integrations and user flows risk-free.
1 week
Deployment Time
Full E2E
Test Coverage
06
Phase 6: Mainnet Launch & Monitoring
Coordinated mainnet deployment with fail-safes, real-time monitoring dashboards, and incident response playbooks. We provide 24/7 monitoring for the first 30 days.
Client Value: A smooth, secure launch with expert oversight, ensuring system stability as you go live and acquire users.
Zero-downtime
Launch Goal
30 days
Post-Launch Support
tech-stack
BUILDING ON PROVEN INFRASTRUCTURE
Protocols & Standards We Implement
We engineer your cross-chain storage attestation system using battle-tested protocols and industry standards, ensuring security, interoperability, and future-proof architecture from day one.
Cross-Chain Storage Attestation
Frequently Asked Questions
Get clear answers on how we build secure, verifiable data bridges for your multi-chain applications.
A Cross-Chain Storage Attestation System is a secure protocol for proving the state or existence of data from one blockchain (the source) on another (the destination). You need one to build truly interoperable dApps—like a lending protocol that accepts collateral from multiple chains, a DEX aggregator with unified liquidity views, or a game with portable assets—without relying on centralized oracles. We build systems that provide cryptographic proof of data integrity, enabling trustless verification across chains.
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