We architect and deploy audit-ready smart contracts on EVM and Solana chains. Our development process integrates OpenZeppelin standards, formal verification, and comprehensive testing to ensure security and reliability from day one.
LABS
Services
Confidential Cloud Storage Smart Contracts
Develop the private coordination layer for decentralized storage networks. We build smart contracts that manage storage deals, payments, and proofs while keeping file metadata confidential using zero-knowledge systems.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for your Web3 product.
- Custom Logic: Build
ERC-20,ERC-721,ERC-1155, or bespoke protocols for DeFi, NFTs, and DAOs. - Gas Optimization: Achieve up to 40% lower transaction costs through expert code review and optimization.
- Full Lifecycle Support: From initial design and development to mainnet deployment and ongoing maintenance.
Reduce your time-to-market with a production-ready MVP in 2-4 weeks, backed by a 100% security audit guarantee before launch.
key-features-cards
ENTERPRISE-GRADE SECURITY
Core Capabilities of Our Confidential Storage Contracts
Our confidential cloud storage smart contracts provide the cryptographic and architectural foundation for building secure, compliant, and scalable Web3 applications. Each capability is engineered to meet the stringent demands of financial institutions and data-sensitive enterprises.
01
End-to-End Encrypted Storage
Data is encrypted client-side using AES-256-GCM before being committed to the blockchain. Only authorized parties with the correct decryption keys can access the plaintext data, ensuring confidentiality at rest and in transit.
AES-256-GCM
Encryption Standard
Zero-Knowledge
Proof Support
02
Granular Access Control
Define and enforce complex permission structures using smart contract logic. Manage read/write/delete permissions at the user, role, or organizational level, with on-chain audit trails for all access events.
RBAC & ABAC
Models Supported
Real-time
Policy Updates
03
Immutable Audit Logs
Every data access attempt, permission change, and administrative action is recorded as an immutable event on-chain. Provides a tamper-proof audit trail essential for regulatory compliance (GDPR, HIPAA, FINRA).
100% Immutable
Record Integrity
Sub-Second
Log Finality
04
Cross-Chain Data Portability
Our contracts are built with standards like ERC-3668 (CCIP Read) to enable secure data attestation and portability across EVM-compatible chains (Ethereum, Polygon, Arbitrum). Decouple storage from execution logic.
EVM Multi-Chain
Compatibility
ERC-3668
Core Standard
05
Automated Compliance & Key Management
Integrate programmable compliance checks (e.g., geofencing, KYC flags) directly into storage logic. Includes secure, non-custodial key management solutions with MPC or hardware security module (HSM) integration options.
MPC/HSM
Key Security
On-Chain
Compliance Rules
06
High-Performance Data Indexing
Off-chain indexing services that efficiently query encrypted metadata and access logs. Delivers sub-second response times for complex queries without compromising on-chain security guarantees.
< 1 Second
Query Latency
GraphQL API
Interface
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Storage Platform
We build confidential cloud storage smart contracts that deliver measurable business results. Our focus is on security, compliance, and operational efficiency from day one.
03
Enterprise-Grade Access Control
Customizable, on-chain permissioning using ERC-721/1155 for token-gated access or role-based systems (RBAC). Manage users, groups, and fine-grained data permissions with revocation capabilities.
SAML 2.0 / OIDC
SSO Integration
Real-Time
Revocation
04
Automated Audit Trail & Compliance
Every data access, modification, and sharing event is immutably logged on-chain. Generate verifiable compliance reports for regulators and internal audits directly from the blockchain ledger.
Immutable
Proof of History
Automated
Reporting
06
Full-Stack Integration Support
We deliver not just contracts, but production-ready SDKs and APIs for your frontend (React, Next.js) and backend (Node.js, Python). Includes comprehensive documentation and deployment scripts.
TypeScript SDK
Included
< 2 Weeks
Integration Time
Architectural Comparison
Confidential Contracts vs. Public Storage Markets
A detailed breakdown of the security, cost, and operational trade-offs between building with confidential smart contracts and using traditional public storage solutions.
| Feature | Public Storage Market (e.g., Filecoin, Arweave) | Chainscore Confidential Smart Contracts |
|---|---|---|
Data Encryption at Rest | ||
On-Chain Data Privacy | Publicly visible metadata & proofs | Fully encrypted metadata & zero-knowledge proofs |
Access Control Granularity | Basic (wallet address) | Programmable (multi-sig, time-locks, conditions) |
Regulatory Compliance (GDPR/HIPAA) | High risk, data exposure | Built-in via confidential computation |
Developer Integration Complexity | Medium (SDK-based) | Low (Managed API & SDK) |
Time to Production Deployment | 8-12 weeks | 4-6 weeks |
Ongoing Security Maintenance | Your responsibility | Managed audits & monitoring |
Typical Implementation Cost (First Year) | $120K - $300K+ | $80K - $180K |
Ideal Use Case | Public archives, NFT assets | Financial data, healthcare records, enterprise IP |
how-we-deliver
TRANSPARENT & PREDICTABLE
Our Delivery Process: From Architecture to Audit
A structured, milestone-driven approach that delivers secure, production-ready confidential storage contracts on schedule. We provide full visibility and expert guidance at every stage.
01
Architecture & Design Review
We analyze your data model and threat surface to design a tailored confidential storage architecture. This includes selecting the optimal encryption scheme (e.g., ZK-SNARKs, FHE), defining access control logic, and planning for gas efficiency.
Deliverable: Technical Specification Document & System Architecture Diagram.
1-2 weeks
Design Phase
100%
Requirements Locked
02
Smart Contract Development
Our engineers implement the core logic using Solidity 0.8+ and specialized privacy libraries (e.g., Aztec, ZKopru). We build with security-first principles, integrating OpenZeppelin patterns for access control and pausability.
Deliverable: Fully functional, documented smart contract codebase.
2-4 weeks
Development Sprint
OpenZeppelin
Security Base
03
Comprehensive Security Audit
Every contract undergoes rigorous internal review followed by a formal audit from a leading third-party firm like Trail of Bits or ConsenSys Diligence. We focus on cryptographic correctness, key management, and reentrancy risks specific to confidential storage.
Deliverable: Full Audit Report & Remediation Plan.
2-3 weeks
Audit Timeline
Critical Issues
Zero Tolerance
04
Testing & Deployment
We execute a full test suite including unit, integration, and scenario-based tests simulating adversarial conditions. We then manage the deployment to your chosen network (Ethereum, Polygon, Arbitrum) with verified contract source code.
Deliverable: Deployed, verified contracts and a comprehensive test report.
>95%
Test Coverage
Mainnet Ready
Final Delivery
tech-stack
BUILT ON SECURE FOUNDATIONS
Technology & Protocol Expertise
Our confidential storage smart contracts are engineered with battle-tested protocols and security-first development practices, ensuring your data privacy solution is robust, scalable, and production-ready from day one.
Structured Delivery for Confidential Storage
Phased Development Tiers
Choose the right engagement model for your project's security, timeline, and operational needs.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Smart Contract Development | |||
Zero-Knowledge Proof Integration | Basic (zk-SNARKs) | Advanced (zk-STARKs) | Custom (Multi-Party Computation) |
On-Chain Audit (External Firm) | |||
Deployment & Configuration | Self-serve guide | Managed deployment | White-glove deployment + CI/CD |
Post-Launch Monitoring | 30 days | 6 months | 12 months + SLA |
Incident Response Time | Best effort | 8 business hours | 1 hour (24/7) |
Encryption Key Management | Client-managed | Hybrid (HSM support) | Dedicated Custody Solution |
Multi-Chain Support | Ethereum Mainnet | EVM L2s (Arbitrum, Base) | Custom (Solana, Cosmos, etc.) |
Team Training & Documentation | Standard docs | 2 workshop sessions | Ongoing architecture reviews |
Estimated Timeline | 4-6 weeks | 8-12 weeks | 12+ weeks |
Starting Price | $25,000 | $75,000 | Custom Quote |
Confidential Cloud Storage Smart Contracts
Frequently Asked Questions
Get clear answers on our development process, security, and support for your confidential data storage solution.
From specification to mainnet deployment, a typical project takes 3-6 weeks. This includes 1-2 weeks for design & architecture, 2-3 weeks for core development and unit testing, and 1 week for internal security review and deployment. Complex integrations (e.g., custom ZK-circuits) can extend this timeline, which we scope and quote separately.
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