We architect and deploy custom smart contracts that form the secure, immutable backbone of your application. Our development process is built on industry-leading security standards, including OpenZeppelin libraries and comprehensive audit preparation, to protect your assets and users.
LABS
Services
Privacy-Preserving Oracle Zero-Knowledge Audit
A specialized security audit for oracle systems using zero-knowledge proofs. We verify the cryptographic integrity of your data attestation and privacy guarantees to eliminate vulnerabilities before mainnet deployment.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
- From Concept to Mainnet: Full-cycle development from technical specification to gas-optimized deployment on
EVMchains like Ethereum, Polygon, and Arbitrum. - Protocol Specialization: Custom logic for
ERC-20,ERC-721, staking systems, multi-signature wallets, and automated market makers (AMMs). - Guaranteed Quality: Every contract undergoes rigorous unit testing, static analysis with Slither, and a formal verification review before delivery.
We deliver battle-tested code that reduces audit cycles by 40% and provides a foundation you can scale with confidence.
key-features-cards
COMPREHENSIVE SECURITY REVIEW
What Our ZK Oracle Audit Covers
Our audit delivers more than a checklist. We provide a deep technical assessment of your privacy-preserving oracle's security, performance, and cryptographic correctness to ensure data integrity and user trust.
01
Cryptographic Circuit Verification
We audit the zero-knowledge proof circuits (e.g., Circom, Halo2, Plonk) for soundness, completeness, and correctness. This includes verifying constraint systems, identifying under-constrained signals, and checking for common vulnerabilities like missing range checks.
100%
Constraint Coverage
O(1)
Proof Size Verification
02
Oracle Logic & Data Integrity
Review of the core oracle logic for data sourcing, aggregation, and attestation within the ZK context. We ensure the system is resistant to manipulation, provides liveness guarantees, and correctly commits verified data to the target chain.
Multi-Source
Data Validation
Sub-Second
Attestation Latency Check
03
Smart Contract & Integration Security
Full audit of the on-chain verifier contracts and integration points. We test for reentrancy, access control flaws, and gas optimization, ensuring seamless and secure interaction between the ZK proof and your application's smart contracts.
ERC-20/721
Standard Compliance
OpenZeppelin
Security Patterns
04
Performance & Economic Analysis
Evaluation of proof generation time, on-chain verification gas costs, and the economic model for operators and users. We identify bottlenecks and provide optimization recommendations for production-scale deployment.
< 2M Gas
Verification Target
> 99.9%
Uptime SLA Analysis
benefits
CRITICAL SECURITY
Why a Specialized ZK Oracle Audit is Essential
Standard smart contract audits miss the unique cryptographic and data integrity risks of privacy-preserving oracles. Our specialized review targets the specific vulnerabilities that can compromise your zero-knowledge proofs and confidential data feeds.
01
Cryptographic Circuit Verification
We audit the zero-knowledge circuits (e.g., Circom, Halo2) powering your oracle's privacy layer, ensuring soundness, completeness, and resistance to proof forgery attacks that generic audits overlook.
100%
Circuit Coverage
Zero-Knowledge
Expertise
02
Data Integrity Under Encryption
We verify that off-chain data remains tamper-proof and accurate throughout the encryption and proof generation process, preventing corrupted inputs from producing valid but incorrect proofs.
End-to-End
Data Flow Audit
TLS 1.3+
Transport Security
03
Trusted Execution Environment (TEE) Security
For oracles using TEEs (e.g., Intel SGX), we assess enclave attestation, secure channel establishment, and side-channel attack resistance to protect data during computation.
Remote Attestation
Verified
CVE Database
Vulnerability Scan
04
Oracle-Specific Economic & Logic Risks
We analyze staking mechanisms, slashing conditions, and incentive alignment specific to your ZK oracle network, ensuring long-term security and reliable operator behavior.
Game Theory
Model Review
Byzantine Fault
Tolerance Analysis
05
Multi-Party Computation (MPC) Protocol Audit
We review MPC protocols used for distributed key generation or computation, identifying vulnerabilities in the cryptographic primitives and communication rounds that could leak private data.
Threshold Schemes
Validated
Adversarial Models
Formalized
06
Integration & Upgrade Safety
We ensure your ZK oracle's client libraries and upgrade mechanisms (e.g., proxies, timelocks) are secure, preventing integration errors or malicious governance actions from breaking privacy guarantees.
Client SDKs
Reviewed
Governance
Security Audit
Comprehensive Security Assessment Tiers
Audit Scope & Deliverables
A detailed breakdown of our ZK oracle audit packages, from core code review to full lifecycle security management.
| Audit Component | Starter | Professional | Enterprise |
|---|---|---|---|
Zero-Knowledge Circuit Audit | |||
Smart Contract & Integration Review | |||
Formal Verification Report | |||
Gas Optimization Analysis | |||
Remediation Support & Re-audit | 1 round | 2 rounds | Unlimited |
Response Time SLA | 72h | 24h | 4h |
Post-Audit Monitoring | |||
Public Audit Report & Badge | |||
Private Executive Summary | |||
Starting Price | $12,000 | $35,000 | Custom Quote |
process-walkthrough
RELIABLE FOUNDATION
Blockchain Infrastructure for FinTechs
Enterprise-grade node infrastructure and APIs to power your financial applications.
We provide dedicated, high-availability RPC endpoints and managed nodes for Ethereum, Solana, and other major L1/L2 networks. This eliminates the operational overhead of running your own infrastructure, ensuring 99.9% uptime SLAs and sub-second response times critical for trading, payments, and real-time data.
Focus on building your core product while we guarantee the performance and reliability of your blockchain layer.
- Multi-chain Support:
EVM(Ethereum, Polygon, Arbitrum),Solana,Cosmos, and more. - Enhanced APIs: Historical data access, WebSocket subscriptions, and transaction simulation.
- Security & Compliance: SOC 2 Type II compliant infrastructure with dedicated VPCs and advanced DDoS protection.
tech-stack
EXPERTISE ACROSS THE ZK STACK
Protocols & Frameworks We Audit
Our team specializes in the security-critical components of privacy-preserving systems. We audit the foundational protocols and frameworks that power verifiable computation and confidential data feeds.
Technical Due Diligence
Zero-Knowledge Oracle Audit FAQs
Common questions from CTOs and technical founders about our specialized audit process for privacy-preserving oracles and ZK circuits.
We employ a four-phase methodology tailored for ZK systems: 1) Architecture Review of the oracle's data flow and trust model. 2) Circuit Logic Audit using tools like Circom and Noir to verify soundness and completeness. 3) Integration Security Review of the on-chain verifier and off-chain prover. 4) Cryptographic Review of the underlying primitives (e.g., Groth16, Plonk). This process has secured over $500M in TVL across 50+ ZK projects.
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