We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process is built on OpenZeppelin security patterns and includes formal verification for critical logic.
LABS
Services
EVM-Based Permanent Archive Smart Contract Development
We develop custom, gas-optimized Solidity smart contracts that create immutable, on-chain records of web assets, ensuring permanent verifiability and timestamping on Ethereum and compatible L2s.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- Full Lifecycle Support: From initial design and
Solidity 0.8+/Rustdevelopment to deployment, monitoring, and upgrade management. - Security-First: Every contract undergoes manual review, automated analysis with
Slither/MythX, and optional third-party audits. - Gas Optimization: We deliver contracts with up to 40% lower gas costs through efficient storage patterns and bytecode optimization.
Deploy battle-tested contracts with a 99.9% uptime SLA and full audit trails, reducing your time-to-market from months to weeks.
key-features-cards
WHAT WE DELIVER
Core Technical Capabilities
Our EVM-based permanent archive smart contracts are engineered for long-term data integrity, verifiable provenance, and seamless integration with your existing Web3 stack.
01
Immutable Data Anchoring
Anchor critical business data—legal documents, transaction proofs, asset provenance—to the blockchain with cryptographic permanence. We implement gas-optimized storage patterns using Merkle trees and IPFS for cost-effective, tamper-proof records.
100%
Data Integrity
IPFS + Arweave
Storage Layer
02
Enterprise-Grade Security Audits
Every contract undergoes rigorous security analysis. We follow OpenZeppelin standards, conduct automated and manual reviews, and provide formal verification reports to mitigate risks before mainnet deployment.
Zero Critical
Audit Findings
OpenZeppelin
Standards Compliant
03
Gas-Optimized Architecture
We design archive contracts with cost efficiency for high-volume operations. Techniques include state rent models, batch processing, and layer-2 anchoring to minimize on-chain storage costs without compromising accessibility.
Up to 70%
Gas Savings
Batch Writes
Supported
04
Multi-Chain & Cross-Chain Compatibility
Deploy your permanent archive on Ethereum, Polygon, Arbitrum, or Base. We architect for future interoperability, enabling data proofs to be verified across different EVM chains and bridging solutions.
EVM+
Chain Support
CCIP / LayerZero
Bridge Ready
05
Verifiable Proof Generation & APIs
Generate cryptographic proofs of data existence and integrity at any point in time. We deliver production-ready GraphQL/REST APIs for easy integration with your frontends and backend services.
< 100ms
Proof Generation
GraphQL API
Included
06
Upgradeability & Governance
Implement secure upgrade patterns (Transparent/UUPS Proxies) with multi-signature governance controls. Ensure your archive can evolve with new standards while maintaining the immutability of historical records.
UUPS Proxy
Upgrade Pattern
Multi-Sig
Governance
benefits
TANGIBLE RESULTS
Business Outcomes for Your Project
Our EVM-based permanent archive smart contracts deliver measurable infrastructure improvements, reducing risk and accelerating your roadmap.
01
Immutable Data Integrity
Deploy smart contracts with permanent, tamper-proof data storage on-chain. Eliminate reliance on centralized databases and ensure your application's critical state is verifiable for the lifetime of the blockchain.
100%
Data Integrity
0 Downtime
Archive Dependency
02
Future-Proof Protocol Compliance
Build with forward-compatible standards like EIP-3668 (CCIP Read) and EIP-4881 (On-Chain Storage). Ensure your dApp remains functional and accessible through future protocol upgrades and L2 migrations.
EIP-3668
Standard Used
0 Re-writes
For Future Upgrades
03
Reduced Long-Term Operational Cost
Shift from recurring cloud storage fees to a one-time, predictable gas cost for permanent data anchoring. Achieve significant TCO reduction for applications with high-volume, long-term data retention needs.
> 60%
TCO Reduction
Fixed Cost
Pricing Model
04
Accelerated Time-to-Market
Leverage our battle-tested templates and modular architecture for EVM archives. Move from concept to a production-ready, audited contract suite in weeks, not months.
< 3 weeks
To Production
Pre-Audited
Code Base
05
Enterprise-Grade Security & Auditability
Receive contracts developed with OpenZeppelin libraries and security patterns, accompanied by a comprehensive audit report. Provide stakeholders with verifiable proof of code security and data handling.
OpenZeppelin
Security Standard
Full Report
Audit Deliverable
06
Seamless Multi-Chain Deployment
Architect contracts for deployment across Ethereum, Polygon, Arbitrum, and other EVM-compatible chains. Ensure data permanence and application logic consistency across your entire L1/L2 ecosystem.
EVM Native
Architecture
Single Codebase
For All Chains
Transparent Roadmap from Concept to Mainnet
Phased Development & Deliverables
A structured, milestone-driven approach to developing and deploying your permanent archive smart contract, ensuring clarity, security, and on-time delivery.
| Phase & Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Initial Architecture & Design Review | |||
Custom Solidity Smart Contract Development | |||
Comprehensive Security Audit (Internal) | |||
Third-Party Audit Coordination & Management | |||
Multi-Chain Deployment (EVM Testnets) | 1 Network | Up to 3 Networks | Unlimited Networks |
Mainnet Deployment & Verification Support | |||
Post-Launch Monitoring & Alerting (30 days) | |||
Ongoing Maintenance & Upgrade Support SLA | Ad-hoc | Business Hours | 24/7 with 4h Response |
Developer Documentation & Handoff | Basic | Comprehensive | Comprehensive + Training |
Estimated Timeline | 3-4 Weeks | 6-8 Weeks | 8-12+ Weeks |
Typical Investment | $15K - $25K | $40K - $75K | $100K+ |
how-we-deliver
PROVEN METHODOLOGY
Our Development Process
A structured, security-first approach to building robust permanent archive smart contracts that are ready for mainnet deployment.
01
Discovery & Architecture
We analyze your data permanence requirements and design a custom EVM smart contract architecture. This includes selecting the optimal storage pattern (e.g., on-chain state, event logs, IPFS/Ceramic anchoring) and defining gas-efficient data structures.
1-2 days
Design Sprint
100%
Requirement Alignment
02
Secure Development
Implementation in Solidity 0.8+ using OpenZeppelin libraries and established patterns. We focus on immutability guarantees, access control, and gas optimization from day one. Every line is written with audit-readiness in mind.
OpenZeppelin
Security Standard
0.8.x
Solidity Version
03
Comprehensive Testing
Rigorous unit and integration testing using Hardhat/Foundry, including edge cases for data integrity and permanent storage. We simulate mainnet conditions and conduct fuzz testing to ensure contract resilience against unexpected inputs.
>95%
Code Coverage
Fuzz Tested
Security
05
Deployment & Verification
We manage the deployment process across testnets and mainnet (Ethereum, Polygon, Arbitrum, etc.), including contract verification on block explorers. We ensure proper constructor arguments and initialization for permanent, immutable deployment.
Multi-Chain
Deployment
Verified
Source Code
06
Monitoring & Support
Post-deployment, we provide monitoring setup for critical events and contract health. We offer ongoing support for upgrades (via proxy patterns where applicable) and integration guidance for your application layer.
24/7
Alerting
Integration Support
Guaranteed
Strategic Comparison
Build vs. Buy: Custom EVM Archive Development
A detailed breakdown of the time, cost, and risk trade-offs between developing a permanent archive solution in-house versus partnering with Chainscore Labs.
| Critical Factor | Build In-House | Generic Vendor | Chainscore Custom |
|---|---|---|---|
Time to Production | 6-12+ months | 2-4 months | 4-8 weeks |
Upfront Development Cost | $150K-$400K+ | $30K-$80K | $50K-$150K |
Security & Audit Burden | High (Your team) | Medium (Shared risk) | Low (Fully audited) |
Protocol & Chain Coverage | Custom (Your effort) | Limited (Pre-set) | Tailored (Your needs) |
Data Integrity Guarantee | Your responsibility | SLA-based | Cryptographically verified |
Ongoing Maintenance & Upgrades | Full internal team | Vendor roadmap | Optional SLA included |
Total Cost of Ownership (Year 1) | $200K-$500K+ | $80K-$200K | $75K-$180K |
Architecture Flexibility | Complete control | Highly constrained | Designed for your stack |
Expertise Required | Senior Solidity, DevOps, Cryptography | Minimal (API user) | Our team's expertise |
EVM Archive Development
Frequently Asked Questions
Get clear answers on our process, security, and timelines for building permanent, on-chain data archives.
A standard EVM-based permanent archive contract with core data anchoring and retrieval functions takes 2-4 weeks from specification to mainnet deployment. Complex systems with custom indexing, multi-chain sync, or advanced access control may extend to 6-8 weeks. We provide a detailed project plan with milestones after the initial technical scoping session.
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