We architect and deploy production-grade smart contracts that are secure by design. Our development process integrates formal verification and multi-stage audits before any code touches the mainnet.
LABS
Services
Zero-Knowledge Proofs for Private Book Sales
Chainscore builds ZK-proof systems that enable confidential sales of digital books. We ensure price and buyer identity remain private while guaranteeing verifiable ownership transfer and royalty execution on-chain.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, audited smart contract systems built by Web3-native engineers.
From custom
ERC-20/ERC-721tokens to complex DeFi primitives, we deliver contracts you can stake your business on.
- Full lifecycle development: Specification, implementation, testing, deployment, and upgrade management.
- Security-first approach: Built with
OpenZeppelinlibraries and patterns, followed by third-party audit. - Gas optimization: Every contract is tuned for minimum execution cost without sacrificing security.
We specialize in complex systems: automated market makers (AMMs), liquidity pools, staking mechanisms, and cross-chain bridges. Our engineers are fluent in Solidity, Rust (Solana, NEAR), and Move (Aptos, Sui).
key-features-cards
PROVEN ZK-INFRASTRUCTURE
Core Technical Capabilities
We deliver production-ready ZK infrastructure for private book sales, combining cryptographic rigor with enterprise-grade reliability to protect sensitive financial data on-chain.
01
Custom ZK-Circuit Development
Design and implement custom zk-SNARK/STARK circuits for your private auction logic. We ensure optimal proving times and gas efficiency using Circom, Halo2, or Noir.
< 2 sec
Proving Time
Circom/Halo2
Framework
02
On-Chain Verification & Settlement
Deploy highly optimized, audited Solidity verifier contracts. We guarantee secure, trustless settlement with sub-0.01 ETH verification costs on Ethereum L1/L2.
< 0.01 ETH
Avg. Verify Cost
OpenZeppelin
Security Standard
03
Bid Privacy & Data Secrecy
Implement cryptographic protocols to conceal bid amounts, participant identities, and order flow. Data is kept private from all parties, including the operator.
End-to-End
Privacy
Semaphore
Identity Layer
04
Prover Infrastructure & Orchestration
Managed, scalable prover infrastructure with auto-scaling and 99.9% uptime SLA. We handle the computational heavy-lifting so you don't have to.
99.9%
Uptime SLA
AWS/GCP
Infrastructure
05
Regulatory Compliance Proofs
Generate zero-knowledge proofs of compliance (e.g., KYC/AML checks, jurisdiction rules) without exposing underlying user data, enabling auditability.
ZK-Proofs
For Compliance
Audit Trail
Immutable
06
Integration & Developer Tooling
Complete SDKs, APIs, and frontend libraries for seamless integration into your existing book sales platform. Get to market in weeks, not months.
< 4 weeks
Integration Time
TypeScript SDK
Primary Tool
benefits
DELIVERING PROVEN VALUE
Business Outcomes for Publishers
Our zero-knowledge proof infrastructure for private book sales is engineered to deliver measurable business results, from protecting intellectual property to unlocking new revenue streams.
01
Protect Intellectual Property & Prevent Piracy
ZK proofs enable verifiable sales without exposing raw transaction data, drastically reducing the risk of content leaks and unauthorized distribution that cost publishers billions annually.
Zero Leakage
Data Exposure
Immutable Proof
Sale Verification
02
Enable Premium Pricing for Exclusive Content
Implement private, verifiable sales of limited editions or early-access content. Prove scarcity and ownership authenticity to collectors without revealing buyer identities, commanding higher price points.
20-40%
Premium Potential
Verifiable Scarcity
Market Trust
03
Automate Royalty Distributions with Privacy
Deploy smart contracts that use ZK proofs to calculate and disburse royalties to authors, agents, and publishers based on verifiable sales data—all while keeping individual purchase details confidential.
Near-Instant
Payout Speed
Audit-Ready
Compliance
04
Build Direct, Trusted Reader Relationships
Sell directly to your audience with a privacy-first storefront. Collect verifiable proof of readership and purchase history for personalized engagement, without compromising user privacy.
First-Party Data
Insight Quality
GDPR/CCPA Ready
Built-in Compliance
05
Future-Proof for New Business Models
Lay the technical foundation for token-gated communities, dynamic NFT-based serializations, and programmable revenue splits—all built on private, verifiable transactions from day one.
Modular Architecture
Flexibility
Protocol-Agnostic
Future Compatibility
06
Reduce Fraud & Dispute Resolution Costs
Every sale is cryptographically proven on-chain. Eliminate chargeback fraud and costly manual reconciliation with an immutable, ZK-verified ledger of all transactions.
Near-Zero
Chargeback Risk
Automated
Audit Trail
ZK-Powered Private Book Sales
Implementation Tiers & Deliverables
Compare our structured service tiers designed to deliver production-ready, privacy-preserving book sales infrastructure.
| Feature / Deliverable | Proof of Concept | Production Pilot | Enterprise Scale |
|---|---|---|---|
Custom ZK Circuit Design & Audit | |||
Private Sale Smart Contracts (Solidity) | |||
On-Chain Verification & Settlement Layer | |||
Buyer Identity & Proof-of-Funds Verification | Basic | Advanced (ZK) | Advanced (ZK) + KYC/AML |
Royalty & Revenue Split Automation | |||
Front-End Integration SDK | Limited | Full (React/Next.js) | Full + White-label |
Performance & Load Testing | Up to 1k TPS | Custom (10k+ TPS) | |
Deployment Support & Go-Live | Self-service | Hands-on | Dedicated Engineer |
Post-Launch Monitoring & SLA | Community Support | Business Hours | 24/7 with 1h Response |
Implementation Timeline | 2-4 weeks | 6-10 weeks | 12+ weeks |
Typical Engagement | $15K - $30K | $75K - $150K | Custom Quote |
how-we-deliver
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
End-to-end blockchain solutions built for performance, security, and scale.
We architect and deploy custom blockchain networks and layer-2 solutions tailored to your specific transaction volume, consensus needs, and governance model.
- Private/Consortium Chains: For enterprises requiring controlled access and high throughput.
- Layer-2 Rollups:
OptimisticorZK-Rollupdevelopment to scale yourEVM-compatible dApps. - Sidechains & AppChains: Dedicated execution environments with custom economic and security parameters.
From initial design to mainnet launch, we handle the full lifecycle with a focus on production readiness and long-term maintainability.
Our development process is built on audited foundations:
- Smart Contracts:
Solidity 0.8+/RustwithOpenZeppelinlibraries and formal verification. - Node Infrastructure: Automated deployment of
Geth,Erigon, orBesuclients with monitoring. - Security First: Multi-signature governance, penetration testing, and comprehensive audit trails are standard.
tech-stack
PRODUCTION-READY INFRASTRUCTURE
Technology & Protocol Stack
We build on battle-tested, audited frameworks to deliver secure, scalable private book sales. Our stack ensures regulatory compliance, seamless integration, and enterprise-grade reliability from day one.
03
Off-Chain Prover Infrastructure
High-performance, scalable prover services built with Rust and C++ for rapid proof generation. We architect for horizontal scaling to handle high-volume auction events with sub-minute proof times.
< 60 sec
Proof Generation
99.9%
Uptime SLA
05
Integration & APIs
RESTful and WebSocket APIs for seamless integration with existing trading platforms, custodians, and KYC providers. Includes webhook systems for real-time event notifications on proof status and settlement.
< 2 weeks
Integration Timeline
24/7
Dev Support
ZK-Powered Privacy
Frequently Asked Questions
Get clear answers on how we build and deploy confidential on-chain book sales using zero-knowledge proofs.
From specification to mainnet launch, a standard private book sales platform with ZK proofs takes 6-10 weeks. This includes 2 weeks for architecture design, 3-4 weeks for core ZK circuit and smart contract development, 1-2 weeks for security audit integration, and 1-2 weeks for deployment and testing. We provide a detailed project plan within the first week of engagement.
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