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Free 30-min Web3 Consultation
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Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
Free 30-min Web3 Consultation
Book Consultation
Smart Contract Security Audits
View Audit Services
Custom DeFi Protocol Development
Explore DeFi
Full-Stack Web3 dApp Development
View App Services
LABS
Services

StarkNet Cairo ZK-Proof Audit Trail Service

We engineer a custom Cairo-based system on StarkNet to generate zero-knowledge proofs for expense transactions. This provides verifiable, privacy-preserving audit trails that reduce compliance overhead without exposing sensitive financial data.
Chainscore © 2026
overview
FULL-STACK INFRASTRUCTURE

Custom Blockchain Development

End-to-end blockchain infrastructure tailored for your specific business logic and scaling needs.

We architect and deploy bespoke blockchain networks and protocols from the ground up. Our full-cycle development delivers production-ready systems in 6-12 weeks, not months.

From consensus design to node orchestration, we build the foundational layer your application requires to scale securely.

  • Core Protocol Engineering: Custom EVM-compatible chains, Substrate-based parachains, and Cosmos SDK app-chains.
  • Node Infrastructure: High-availability validator clusters with 99.9% uptime SLA and automated governance tooling.
  • Smart Contract Suite: Core protocol logic in Solidity, Rust (Solana), or CosmWasm, secured by formal verification.
  • DevOps & Tooling: Complete deployment pipeline, block explorers, and monitoring dashboards for real-time network insights.
key-features-cards
AUDIT & VERIFICATION ENGINE

Core Technical Capabilities

Our specialized service delivers a verifiable, immutable audit trail for your StarkNet Cairo applications, providing the technical proof and operational transparency required for enterprise adoption and regulatory compliance.

01

Cairo 1.0 Smart Contract Audits

In-depth security review of your Cairo 1.0 contracts, focusing on ZK-specific vulnerabilities, arithmetic overflows, and storage logic. We deliver a detailed report with actionable fixes and gas optimization recommendations.

100+
Vulnerability Checks
2-4 weeks
Typical Audit Time
02

ZK-Proof Generation & Verification

We architect and implement the end-to-end proof generation pipeline for your application's state transitions. This includes STARK proof batching, recursive proof aggregation, and on-chain verification contract deployment.

< 5 min
Proof Gen SLA
99.9%
Verification Uptime
03

Immutable Audit Trail Logging

Every state change, proof, and transaction is cryptographically hashed and anchored to a public ledger (e.g., Ethereum L1). This creates a permanent, tamper-proof record for compliance, dispute resolution, and investor reporting.

L1 Anchored
Data Integrity
Real-time
Log Streaming
04

Custom Prover Integration

Tailored integration of Cairo's prover (e.g., Stone, Lambdaworks) into your application's backend. We handle the complexity of proof computation, witness generation, and managing prover infrastructure at scale.

Sub-Second
Witness Gen
Auto-scaling
Prover Fleet
05

Regulatory Compliance Framework

Structure your audit trail to meet specific regulatory requirements (MiCA, Travel Rule). We map on-chain proofs to off-chain legal entities and generate standardized compliance reports from the immutable log data.

FATF Compliant
Data Schema
Automated
Report Generation
06

Performance & Cost Optimization

Continuous analysis of your proof generation costs and latency. We implement strategies like proof recursion, state diffs, and efficient Merkle tree updates to reduce operational expenses by up to 60%.

60%
Cost Reduction
10x
Throughput Gain
benefits
PROVEN RESULTS

Business Outcomes for FinTechs & NeoBanks

Our StarkNet Cairo ZK-Proof Audit Trail Service delivers tangible infrastructure improvements that directly impact your bottom line and compliance posture.

01

Regulatory Compliance & Audit Readiness

Generate immutable, verifiable proof of every transaction state change. Provide regulators with cryptographic audit trails instead of manual reports, reducing compliance overhead by up to 70%.

100%
Data Integrity
SEC Rule 17a-4
Compliance Standard
02

Real-Time Settlement & Capital Efficiency

Move from T+2 settlement to sub-second finality with ZK-proofs. Unlock trapped capital and enable new real-time products like instant cross-border payments and intraday liquidity management.

< 1 sec
Settlement Finality
24/7/365
Market Operation
03

Fraud Prevention & Dispute Resolution

Eliminate chargeback fraud and transaction disputes with cryptographic proof of user intent and execution. Our audit trail provides an indisputable single source of truth for all parties.

Zero
Successful Disputes
100%
Proof Availability
04

Operational Cost Reduction

Replace expensive legacy reconciliation systems and manual back-office processes with automated, trustless proof verification. Drastically reduce IT and operational expenses associated with transaction auditing.

60-80%
Ops Cost Savings
Automated
Reconciliation
05

Enhanced Developer Velocity

Integrate our pre-audited, production-ready Cairo circuits and APIs. Your engineering team can focus on core product features instead of building and securing complex ZK-proof infrastructure.

4-6 weeks
Integration Time
Audited
Cairo Circuits
06

Institutional-Grade Security & SLAs

Deploy with confidence backed by enterprise SLAs. Our service is built on formally verified Cairo code, undergoes regular security audits, and offers 99.95% uptime guarantees for critical financial operations.

99.95%
Uptime SLA
Formally Verified
Core Logic
Choose Your Audit & Integration Path

Phased Implementation Tiers

Select the tier that matches your project's security requirements and operational scale. Each tier builds upon the last, adding deeper integration and support.

FeatureStarterProfessionalEnterprise

StarkNet Cairo Smart Contract Audit

ZK-Circuit Logic Review

Comprehensive Audit Report

Remediation Guidance

On-Chain Proof Generation & Verification

Custom Audit Trail Dashboard

Integration Support (API/SDK)

SLA-Backed Uptime (99.9%)

Dedicated Technical Account Manager

24/7 Incident Response Time

N/A

24h

4h

Estimated Timeline

2-3 weeks

4-6 weeks

6-8 weeks

Starting Price

$15K

$45K

Custom Quote

how-we-deliver
AUDIT-READY FROM DAY ONE

Our Delivery Methodology

Our structured, four-phase approach ensures your StarkNet application's ZK-proof audit trail is production-ready, secure, and fully documented for compliance and investor due diligence.

01

Phase 1: Architecture & Specification Review

We conduct a deep-dive analysis of your Cairo contracts and business logic to design a comprehensive audit trail strategy. We define the critical events, state transitions, and proof requirements that must be immutably logged.

48-72 hours
Initial Review
100%
Logic Coverage
02

Phase 2: Cairo Smart Contract Instrumentation

Our engineers integrate non-invasive logging calls directly into your Cairo codebase. We emit structured events for every critical function and state change, ensuring zero impact on core contract logic or gas efficiency.

< 5%
Gas Overhead
OpenZeppelin
Standards Compliant
03

Phase 3: ZK-Proof Generation & Indexing Layer

We deploy and configure our off-chain prover service to consume emitted events, generate STARK proofs of state transitions, and index them into a queryable database. This creates an immutable, verifiable chain of custody.

Sub-second
Proof Generation
99.9% SLA
Indexing Uptime
security
FULL-STACK INFRASTRUCTURE

Custom Blockchain Development

Build secure, scalable blockchain networks and applications tailored to your specific business logic.

We architect and deploy custom blockchain solutions from the ground up, delivering production-ready mainnets, sidechains, and L2 networks in weeks, not months. Our full-cycle development covers everything from consensus mechanism design to node orchestration and wallet integration.

  • Protocol & Smart Contract Development: Custom Solidity, Rust (Solana), or Move (Aptos/Sui) contracts with formal verification.
  • Node Infrastructure: High-availability validator setups, RPC endpoints, and block explorers with 99.9% uptime SLAs.
  • Cross-Chain & Interoperability: Secure bridges and messaging layers using Wormhole, LayerZero, or IBC.
  • Developer Tooling: Custom SDKs, APIs, and admin dashboards for seamless team onboarding.

We focus on security-first development, employing OpenZeppelin standards and multi-stage audits to protect assets and data. This approach reduces technical debt and accelerates your path to a secure, auditable launch.

StarkNet Cairo ZK-Proof Audit Trail Service

Frequently Asked Questions

Get clear answers about our specialized service for building verifiable, on-chain audit trails using StarkNet and Cairo.

A ZK-Proof Audit Trail is an immutable, on-chain record of critical system events (like transactions, state changes, or governance actions) where each entry is cryptographically verified by a zero-knowledge proof. You need one to provide irrefutable, real-time proof of compliance, operational integrity, and data provenance to users, regulators, and partners. It transforms opaque backend logs into a transparent, trust-minimized asset, essential for DeFi protocols, institutional platforms, and any application requiring demonstrable accountability.

ENQUIRY

Get In Touch
today.

Our experts will offer a free quote and a 30min call to discuss your project.

NDA Protected
24h Response
Directly to Engineering Team
10+
Protocols Shipped
$20M+
TVL Overall
NDA Protected Directly to Engineering Team
StarkNet Cairo ZK-Proof Audit Trail Service | Chainscore Labs | ChainScore Guides