We architect and deploy custom, audited smart contracts for DeFi, NFTs, and enterprise applications. Our development process ensures zero critical vulnerabilities before mainnet deployment.
LABS
Services
Privacy-Preserving Tax Proof Generation via ZKPs
A system that allows users to generate zero-knowledge proofs verifying their tax compliance on private payments, enabling auditability without revealing underlying transaction details.
Chainscore © 2026
overview
SECURE, AUDITED CODE
Custom Smart Contract Development
Production-ready smart contracts built with enterprise-grade security and gas optimization.
- Security-First Architecture: Built on
Solidity 0.8+with OpenZeppelin libraries and formal verification patterns. - Gas Optimization: Every contract is profiled and optimized, reducing user transaction costs by up to 40%.
- Full Audit Trail: Multi-stage review process culminating in a third-party audit report from firms like CertiK or Quantstamp.
- Upgradeability & Maintenance: Implement proxy patterns (ERC-1967) for seamless, secure future upgrades without migration.
Deliver a secure, future-proof foundation. We handle the complex, high-stakes code so you can focus on product and growth.
key-features-cards
ENTERPRISE-GRADE ZKP INFRASTRUCTURE
Core Technical Capabilities We Deliver
We architect and deploy production-ready, privacy-preserving tax systems that are secure, compliant, and scalable. Our focus is on delivering measurable outcomes: reducing audit risk, automating compliance, and unlocking new data-driven services.
benefits
TANGIBLE RESULTS
Business Outcomes for Your Platform
Our ZK-powered tax proof generation delivers more than just technical compliance. It creates a strategic advantage for your platform, unlocking new revenue streams and building unshakeable user trust.
01
Unlock New Revenue Streams
Enable premium tax advisory services and automated reporting features. Provide users with certified, audit-ready proof of their on-chain activity, creating a new subscription or service fee model for your platform.
New ARPU
Revenue Stream
Premium Tier
Feature
02
Mitigate Regulatory Risk
Proactively address evolving global tax regulations (e.g., DAC8, IRS 1099-DA) with a verifiable, tamper-proof audit trail. Reduce your platform's exposure to compliance fines and legal liabilities.
Audit-Ready
Compliance
Zero-Knowledge
Verification
03
Enhance User Trust & Retention
Give users complete privacy over their transaction history while providing them with certified tax documents. This transparency builds loyalty and reduces churn to competitors.
Privacy-First
User Experience
Certified Proofs
Trust Signal
04
Reduce Operational Overhead
Automate the generation, validation, and delivery of complex tax proofs. Eliminate manual reconciliation processes and the need for large internal compliance teams.
Automated
Workflow
No Manual Effort
Efficiency
05
Future-Proof Your Compliance
Our modular ZK circuits are designed to adapt to new tax jurisdictions and rule changes. Stay ahead of regulatory shifts without costly platform rewrites.
Modular Design
Adaptability
Protocol-Agnostic
Coverage
06
Accelerate Enterprise Adoption
Provide institutional clients and enterprises with the robust, verifiable financial reporting they require. Meet the due diligence standards of CFOs and audit firms.
Institutional Grade
Reporting
Enterprise Ready
Integration
The Infrastructure Decision for FinTechs
Build vs. Buy: Implementing ZK Tax Proofs
A detailed comparison of the time, cost, and risk involved in developing a privacy-preserving tax proof system in-house versus using Chainscore's production-ready API.
| Implementation Factor | Build In-House | Buy with Chainscore |
|---|---|---|
Time to Production | 6-12 months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $75K - $200K |
ZK Circuit Expertise Required | Senior Cryptographer (2-3 FTE) | None (We provide it) |
Security & Audit Overhead | High (Unaudited, custom risk) | Low (Pre-audited, battle-tested) |
Ongoing Maintenance & Upgrades | Your engineering team | Fully managed by Chainscore |
Regulatory Compliance (e.g., IRS) | Your legal team's responsibility | Built-in compliance frameworks |
Multi-Chain Support (EVM, L2s) | Custom integration per chain | Native support out-of-the-box |
Total Cost of Ownership (Year 1) | $300K - $750K+ | $100K - $250K |
Implementation Risk | Very High | Very Low |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A systematic, security-first approach to integrating privacy-preserving tax proofs into your existing financial stack. We deliver production-ready ZKP circuits and APIs, not just theoretical concepts.
01
Architecture & Requirements Analysis
We map your existing transaction data flows and compliance requirements to design a ZKP circuit architecture that minimizes on-chain costs and maximizes privacy guarantees. This phase defines the exact zero-knowledge statements needed for regulatory proof.
1-2 weeks
Design Phase
100%
Requirement Coverage
02
Circuit Development & Optimization
Our cryptographers implement custom ZK-SNARK/STARK circuits in Circom or Halo2, optimized for your specific tax logic (e.g., cost-basis calculation, wash sale detection). We focus on minimizing proof generation time and verification gas costs.
< 2 sec
Avg. Proof Gen
~200k gas
On-Chain Verify
03
Security Audit & Formal Verification
Every circuit undergoes rigorous review. We conduct internal audits against common ZKP vulnerabilities (e.g., under-constrained circuits) and can facilitate third-party audits with firms like Trail of Bits. Formal verification ensures mathematical correctness.
Zero Critical
Audit Findings
Formal Proof
Circuit Logic
04
API & SDK Integration
We deliver a production-ready REST API and client SDKs (JS/TS, Python) that abstract away ZKP complexity. Your application simply submits transaction data; our service returns the verifiable proof and necessary calldata for on-chain submission.
99.9%
API Uptime SLA
< 50ms
P95 Latency
05
On-Chain Verifier Deployment
We deploy and manage the optimized Solidity verifier contract to your network of choice (Ethereum, L2s, app-chains). This includes setting up trusted setup ceremonies if required and providing upgrade management strategies.
Mainnet Ready
In 48 Hours
Multi-Chain
Supported
06
Monitoring & Maintenance
Post-deployment, we provide dashboards for proof generation metrics, verifier contract gas usage, and system health. Our team offers ongoing support for circuit updates as tax regulations evolve.
24/7
Monitoring
SLAs
Included
security-approach
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for your specific business logic.
We architect and deploy custom smart contracts that power your decentralized application's core functionality. Our development process is built on security-first principles, utilizing OpenZeppelin libraries and comprehensive audit trails.
- From Specification to Mainnet: We handle the full lifecycle—requirements, development, testing, and deployment.
- Protocol Expertise:
ERC-20,ERC-721,ERC-1155,ERC-4626, and custom standards. - Guaranteed Security: Every contract undergoes rigorous unit testing and formal verification before deployment.
Reduce your time-to-market and technical risk with battle-tested, gas-optimized contracts ready for mainnet launch in as little as 2 weeks.
Privacy-Preserving Tax Proofs
Frequently Asked Questions
Get clear answers on how we build, deploy, and support secure ZK-powered tax compliance systems for Web3 businesses.
A complete, production-ready system typically takes 6-10 weeks from kickoff to mainnet deployment. This includes 2 weeks for requirements and circuit design, 3-4 weeks for development and internal testing, and 2-3 weeks for security audits and final integration. We provide a detailed project plan during the initial consultation.
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