We deliver custom smart contracts that are secure, gas-optimized, and ready for mainnet. Our engineers specialize in Solidity 0.8+, Rust (Solana), and Vyper, following OpenZeppelin standards and formal verification best practices to mitigate risk.
LABS
Services
Privacy-Preserving Subscription Contract Development
We build custom smart contracts for the SocialFi and Creator Economy that use zero-knowledge proofs (ZKPs) or trusted execution environments (TEEs) to protect subscriber identity and viewing habits while enabling verifiable payments and access control.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
From concept to audit, we ensure your on-chain logic is bulletproof and cost-effective.
- Token Standards:
ERC-20,ERC-721,ERC-1155, andSPLwith custom minting, staking, and governance modules. - DeFi & NFT Protocols: Custom DEXs, lending platforms, NFT marketplaces, and launchpads.
- Security First: Every contract undergoes manual review and automated analysis with
Slither&MythX. - Full Lifecycle: Development, deployment, verification on Etherscan/Solscan, and post-launch monitoring.
key-features-cards
BUILDING TRUST THROUGH TRANSPARENCY
Core Technical Capabilities
Our development process is engineered for security and scalability, delivering production-ready subscription logic with verifiable privacy guarantees.
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Platform
Our privacy-preserving subscription contracts deliver measurable results, from accelerated time-to-market to provable security and compliance.
01
Accelerated Time-to-Market
Deploy a fully audited, production-ready subscription system in under 3 weeks. We provide a complete stack: on-chain logic, off-chain verifier, and admin dashboard.
< 3 weeks
Production Deployment
100%
Code Delivery
02
Provable Security & Compliance
Every contract undergoes a formal audit by a top-tier security firm. We implement Zero-Knowledge proofs for privacy and ensure compliance with financial data regulations.
Formal Audit
Security Guarantee
ZK-SNARKs
Privacy Standard
03
Predictable, Optimized Costs
Gas-optimized Solidity contracts reduce on-chain transaction fees by up to 40% for recurring billing. Transparent, fixed-scope pricing with no hidden fees.
~40%
Gas Reduction
Fixed Price
Pricing Model
04
Enterprise-Grade Reliability
Built for 24/7 operation with 99.9% uptime SLAs for the off-chain infrastructure. Includes automated monitoring, alerting, and multi-chain failover support.
99.9%
Infra Uptime SLA
24/7
Monitoring
05
Seamless User Experience
Implement frictionless subscription flows with social logins, credit card payments via Stripe, and automatic crypto billing. No seed phrases required for end-users.
< 60 sec
Onboarding Time
Stripe + Crypto
Payment Options
06
Full Ownership & Control
You retain 100% IP ownership of all delivered code, smart contracts, and infrastructure configurations. We provide comprehensive documentation and handover.
100%
IP Ownership
Full Docs
Knowledge Transfer
The True Cost of In-House Development
Build vs. Buy: Why Specialized Development Wins
A detailed comparison of the time, cost, and risk involved in building privacy-preserving subscription contracts in-house versus partnering with Chainscore Labs.
| Factor | Build In-House | Chainscore Development |
|---|---|---|
Time to Market | 6-12 months | 4-8 weeks |
Initial Development Cost | $150K - $400K+ | $50K - $150K |
Security Audit Requirement | Additional $30K - $100K | Included |
Expertise Required | Specialized ZK/MPC & Solidity team | Provided by Chainscore |
Ongoing Maintenance & Upgrades | Full-time dev team cost | Optional SLA from $2K/month |
Compliance & Standard Adherence | Your responsibility | Built to ERC-4337, EIP standards |
Infrastructure (RPC, Indexers, etc.) | Additional setup & cost | Integrated & managed |
Total Year 1 Cost (Est.) | $200K - $500K+ | $75K - $200K |
Primary Risk | High (Unaudited code, delays) | Low (Audited, predictable delivery) |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A structured, security-first approach to delivering production-ready privacy-preserving subscription systems. We focus on predictable timelines, audited code, and seamless integration with your existing stack.
01
Architecture & Design Review
We analyze your business logic and threat model to design a system architecture using optimal privacy primitives (zk-SNARKs, zk-STARKs, or TEEs). This ensures the technical foundation is secure, scalable, and cost-effective before a single line of code is written.
1-2 weeks
Design Phase
100%
Requirement Lock
02
Smart Contract Development
Implementation of core subscription logic (ERC-1337/ERC-948 patterns) and privacy-preserving components in Solidity/Vyper. We employ OpenZeppelin libraries and gas optimization patterns to ensure efficiency and security by design.
Solidity 0.8+
Language
OpenZeppelin
Security Base
03
Privacy Circuit & Proof System
Development of the zero-knowledge circuits (using Circom, Halo2, or Noir) or secure enclave modules that anonymize user activity and payment data. This is the core intellectual property of your privacy solution.
zk-SNARKs/STARKs
Primitive
Circom/Noir
Framework
04
Security Audit & Formal Verification
Rigorous multi-stage audit process including automated analysis (Slither), manual review by our senior engineers, and optional engagement with top-tier third-party firms like Trail of Bits or Quantstamp before mainnet deployment.
2+ Audits
Review Stages
Critical
Zero Issues
05
Frontend & API Integration
Delivery of a developer-friendly SDK and integration kit for your application. Includes React/Node.js components for wallet connection, proof generation, and subscription management, enabling your team to own the user experience.
TypeScript SDK
Delivery
< 1 day
Integration Time
06
Deployment & Ongoing Support
We manage the deployment to your chosen EVM L1/L2 network (Ethereum, Polygon, Arbitrum) with comprehensive monitoring and alerting setup. Includes post-launch support and maintenance plans for upgrades and optimizations.
Mainnet Ready
Deployment
24/7
Monitoring
tech-stack
BUILT FOR ENTERPRISE
Proven Technology Stack
Our architecture is built on battle-tested, open-source protocols and audited libraries, ensuring your subscription logic is secure, scalable, and future-proof from day one.
Privacy-Preserving Subscriptions
Frequently Asked Questions
Answers to common technical and commercial questions about our development process, security, and deliverables.
For a standard privacy-preserving subscription protocol, we deliver a production-ready, audited solution in 4-6 weeks. This includes design, development, unit/integration testing, and a third-party audit report. Complex features like multi-chain support or custom payment logic can extend this to 8-10 weeks. We provide a detailed sprint-by-sprint timeline at project kickoff.
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