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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
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

Confidential Transaction API Development

Build privacy-first applications with a unified API that abstracts the complexity of zero-knowledge proofs and confidential protocols. We deliver a production-ready, audited API suite in 4-6 weeks.
Chainscore © 2026
overview
FOUNDATION

Blockchain Infrastructure Development

Build and scale secure, high-performance blockchain backends for your Web3 applications.

We architect and deploy the core infrastructure your dApp needs to perform. This includes custom RPC nodes, indexers, and oracle integrations that deliver 99.9% uptime and sub-second latency. Our team handles the heavy lifting so you can focus on your product.

From a 2-week MVP to a globally scaled enterprise system, we build the foundation for growth.

  • Node Operations: Managed EVM (Ethereum, Polygon, Arbitrum) and Solana RPC/validator nodes with real-time monitoring.
  • Data Infrastructure: Custom indexers for on-chain events, transaction history, and wallet analytics using The Graph or bespoke solutions.
  • Reliability & Security: Multi-cloud deployment, DDoS protection, and automated failover to ensure your service never goes down.
key-features-cards
ENTERPRISE-GRADE

A Complete API Suite for Privacy

Go beyond basic encryption. Our modular API suite provides the specific privacy primitives your application needs, from confidential transfers to zero-knowledge proofs, without the operational overhead.

01

Confidential Transfer API

Hide transaction amounts and participant identities on public ledgers. Our API uses zero-knowledge proofs and stealth addresses to ensure financial privacy for DeFi, payroll, and enterprise settlements.

Key Features:

  • Stealth Address Generation for recipient privacy
  • zk-SNARK-based Amount Hiding
  • Gas-optimized for L1 and L2 networks
< 500ms
Proof Generation
99.9%
Uptime SLA
EXPLORE
02

Private State Management

Securely manage and compute over encrypted on-chain data. Our API enables confidential voting, private auctions, and shielded balances, ensuring business logic remains private while leveraging blockchain security.

Key Features:

  • Encrypted State Variables
  • Private Function Execution
  • Compatible with EVM and Cairo-based chains
E2E Encrypted
Data Lifecycle
99.9%
Uptime SLA
EXPLORE
03

Selective Disclosure Proofs

Prove specific claims (e.g., KYC status, credit score) without revealing underlying data. Essential for compliant DeFi, undercollateralized lending, and permissioned access controls.

Key Features:

  • ZK Proof of Credentials
  • Custom Circuit Development
  • Integration with Verifiable Credential standards
< 1 sec
Proof Verification
99.9%
Uptime SLA
EXPLORE
04

Cross-Chain Privacy Bridge

Move assets confidentially between different blockchain networks. Our secure relay and proof system ensures privacy is maintained during cross-chain transfers, preventing transaction graph analysis.

Key Features:

  • Privacy-Preserving Bridges
  • Universal Message Relaying
  • Audited by leading security firms
< 3 min
Finality Time
99.9%
Uptime SLA
EXPLORE
05

Audit & Compliance Reporting

Generate regulatory-compliant audit trails for private transactions. Provide necessary transparency to auditors and regulators without compromising user privacy, using advanced cryptographic techniques.

Key Features:

  • View Key Management for auditors
  • Regulatory Report Generation
  • GDPR/AML compliant data handling
FATF Travel Rule
Compliance Ready
99.9%
Uptime SLA
EXPLORE
06

Developer SDK & Tooling

Accelerate integration with our comprehensive SDK, CLI tools, and local development sandbox. Includes pre-built UI components for wallet connections and transaction signing for private operations.

Key Features:

  • TypeScript/Go/Python SDKs
  • Local Privacy Testnet
  • Detailed API Documentation & tutorials
< 2 weeks
Integration Time
99.9%
Uptime SLA
EXPLORE
benefits
EXPERTISE

Why Build Your Confidential Layer with Us

Chainscore delivers production-ready confidential transaction infrastructure, built by engineers who have secured over $1B in on-chain value. We focus on the technical depth and security guarantees your product requires.

01

Zero-Knowledge Circuit Expertise

We design and implement custom zk-SNARKs and zk-STARKs circuits for your specific use case (private payments, shielded auctions, confidential voting). Our team has contributed to major ZK libraries like Circom and Halo2.

Circom
Primary Framework
Halo2
Advanced Circuits
EXPLORE
02

Audited & Secure by Design

Every confidential transaction module undergoes rigorous security audits following industry standards. We integrate with OpenZeppelin's privacy libraries and implement formal verification for critical logic.

Multi-Stage
Audit Process
Formal Verification
For Core Logic
EXPLORE
03

High-Performance Proving Infrastructure

Deploy with sub-2 second proof generation times and scalable proving services. Our architecture supports batching and GPU acceleration to maintain performance under load without compromising privacy.

< 2 sec
Proof Generation
GPU-Accelerated
Scalability
EXPLORE
04

Multi-Chain & Protocol Integration

Seamlessly integrate confidential layers with Ethereum, Polygon, Arbitrum, and other EVM chains. We handle the cross-chain messaging and state synchronization so you don't have to.

EVM+
Chain Support
CCIP / LayerZero
Messaging Options
EXPLORE
05

Regulatory-Compliant Architecture

Build with selective disclosure and auditability features for compliance (e.g., travel rule, AML). We implement viewing keys and regulatory gateways that maintain user privacy while enabling necessary oversight.

Selective Disclosure
Built-in Feature
Viewing Keys
Compliance Tool
EXPLORE
06

End-to-End Development & Support

From initial design to mainnet deployment and ongoing monitoring. We provide 24/7 devops support, performance dashboards, and dedicated technical account management.

24/7 SRE
Support SLA
From Design to Mainnet
Full Lifecycle
EXPLORE
Choose Your Integration Path

Structured Development Packages

Compare our tiered packages for Confidential Transaction API development, designed to match your project's scale, security requirements, and timeline.

Feature / DeliverableStarterProfessionalEnterprise

Confidential Transaction Core API

Integration with zk-SNARKs (e.g., Aztec, Zcash)

Basic

Custom Circuits

Custom Circuits + Optimizations

Multi-Chain Support (EVM)

Ethereum Mainnet

Ethereum + 2 L2s

Ethereum + 5+ Chains (Custom)

Smart Contract Audit Scope

Core Logic Only

Full Stack + Integration

Full Stack + Integration + Pen Test

Deployment & Integration Support

Documentation

Hands-on Guidance

Dedicated Engineer

Response Time SLA

Business Hours

12 Hours

4 Hours

Uptime & Performance SLA

99.5%

99.9%

Compliance & Reporting Features

Basic Logs

Advanced Analytics Dashboard

Custom Regulatory Reports

Estimated Implementation Timeline

3-4 Weeks

6-8 Weeks

Custom Sprint Plan

Starting Price

$25,000

$75,000

Custom Quote

how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE

Our 4-Phase Delivery Methodology

We deliver production-ready confidential transaction APIs through a structured, milestone-driven process. Each phase has clear deliverables, fixed timelines, and dedicated technical reviews to ensure your project stays on track and meets enterprise security standards.

01

Phase 1: Architecture & Threat Modeling

We design a secure system architecture and conduct a formal threat model review. This phase defines the cryptographic primitives (zk-SNARKs, FHE, TEEs), data flow, and security boundaries to eliminate design flaws before development begins.

Deliverables: Technical Specification Document, Threat Model Report, Architecture Diagrams.

1-2 weeks
Typical Duration
100%
Design Review
02

Phase 2: Core Development & Integration

Our engineers build the core confidential logic using audited libraries (e.g., Noir, ZK-Kit) and integrate it with your existing blockchain stack (EVM, Solana, Cosmos). We implement the API layer with rate limiting, authentication, and monitoring hooks.

Deliverables: Working API Endpoints, Integration Test Suite, Initial Documentation.

3-5 weeks
Typical Duration
Daily
Progress Syncs
03

Phase 3: Security Audit & Penetration Testing

Every component undergoes rigorous internal review followed by a formal audit from a third-party security firm. We simulate adversarial attacks to test the confidentiality and integrity guarantees of the transaction pipeline.

Deliverables: Internal Audit Report, Third-Party Audit Certificate, Remediation Plan.

2-3 weeks
Typical Duration
Zero Critical
Issues at Launch
04

Phase 4: Deployment & Production Readiness

We manage the deployment to your infrastructure (cloud or on-prem) with zero-downtime strategies. This includes setting up monitoring dashboards, alerting systems, and providing comprehensive runbooks for your DevOps team.

Deliverables: Production Deployment, SLA Agreement, Monitoring Dashboard, Knowledge Transfer.

1 week
Typical Duration
99.9%
Uptime SLA
security
CORE SERVICE

Smart Contract Development

Secure, audited smart contracts built to your exact specifications and deployed on-chain.

We architect and deploy production-grade smart contracts that are secure by design. Every contract undergoes a rigorous development lifecycle, from initial specification in Solidity 0.8+ or Rust to final deployment, ensuring gas efficiency and adherence to standards like ERC-20, ERC-721, and ERC-1155.

Reduce your time-to-market from months to weeks with our battle-tested development frameworks.

Our security-first approach integrates formal verification and multi-stage audits:

  • Pre-deployment audits by internal and third-party experts.
  • Gas optimization reviews to minimize user transaction costs.
  • Comprehensive testing with 100% branch coverage and mainnet-fork simulations.
  • Post-deployment monitoring and upgrade path planning using transparent proxies.

We deliver a complete package:

  • Full source code with detailed documentation and NatSpec comments.
  • Deployment scripts and verification on Etherscan/Blockscout.
  • Technical whitepaper section explaining your protocol's mechanics.
  • Ongoing support for maintenance, bug fixes, and iterative upgrades.
Confidential Transaction API

Frequently Asked Questions

Get clear answers on our development process, security, and integration for your confidential transaction needs.

For a standard API with core privacy features (e.g., stealth addresses, encrypted mempools), delivery is 4-6 weeks. Complex integrations with custom zero-knowledge circuits or multi-chain support extend the timeline to 8-12 weeks. We provide a detailed project plan with milestones after the initial scoping call.

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