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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

Privacy-Preserving Cross-Chain Transactions

Chainscore builds cryptographic API layers using zk-SNARKs and MPC to enable private asset transfers and data sharing across blockchains, shielding sensitive on-chain details from public exposure.
Chainscore © 2026
overview
CORE SERVICE

Smart Contract Development

Secure, production-ready smart contracts built for scale and compliance.

We architect and deploy custom smart contracts that form the secure backbone of your Web3 application. Our development process is built on audited code patterns and gas-optimized Solidity 0.8+, ensuring reliability from day one.

  • Full Lifecycle Development: From initial architecture to mainnet deployment and ongoing maintenance.
  • Comprehensive Security: Integration of OpenZeppelin libraries and pre-audit reviews to mitigate vulnerabilities.
  • Protocol-Specific Logic: Expertise in ERC-20, ERC-721, ERC-1155, and custom standards for DeFi, NFTs, and DAOs.

Reduce your time-to-market and technical risk with battle-tested contracts that just work.

Our deliverables include fully documented source code, a deployment playbook, and integration support. We focus on creating modular, upgradeable systems using patterns like the Transparent Proxy or UUPS to future-proof your business logic.

key-features-cards
ENGINEERED FOR PRIVACY

Core Cryptographic Capabilities

Our privacy-preserving cross-chain transactions are built on a foundation of battle-tested cryptographic primitives, delivering verifiable security without sacrificing performance.

01

Zero-Knowledge Proof Systems

We implement zk-SNARKs and zk-STARKs to enable transaction validation without revealing underlying data. This ensures asset amounts and sender/receiver details remain confidential while maintaining full auditability on-chain.

ZK-SNARKs
Proof System
< 5 sec
Proof Generation
EXPLORE
02

Threshold Signature Schemes (TSS)

Distributed key generation and signing across multiple parties eliminates single points of failure. Our TSS implementation secures cross-chain bridges and wallets, requiring no single entity to hold a complete private key.

ECDSA/EdDSA
Signature Scheme
n-of-m
Signing Policy
EXPLORE
03

Secure Multi-Party Computation (MPC)

Execute complex computations on encrypted data across decentralized nodes. We use MPC protocols for private price oracles, confidential voting, and secure cross-chain state verification without exposing raw inputs.

Malicious Security
Adversarial Model
ABY Framework
Implementation Base
EXPLORE
04

Homomorphic Encryption

Perform computations directly on encrypted data. We leverage partially homomorphic encryption (PHE) for privacy-preserving balance checks and transaction aggregations, enabling functionality without decrypting sensitive user information.

Paillier / ElGamal
Encryption Scheme
Additive
Homomorphism Type
EXPLORE
05

Commitment Schemes

Cryptographic commitments bind parties to values before they are revealed. We use Pedersen and Merkle tree commitments to ensure data integrity in our cross-chain messaging layers, providing tamper-evident logs for all private operations.

Pedersen
Primary Scheme
Binding & Hiding
Security Properties
EXPLORE
06

Auditable Privacy Frameworks

Privacy without compliance is a liability. Our systems integrate selective disclosure protocols and regulatory-compliant audit trails, allowing authorized entities to verify transactions without breaking user anonymity for the broader network.

Selective Disclosure
Audit Mechanism
GDPR/AML Ready
Compliance
EXPLORE
benefits
ENTERPRISE VALUE

Business Outcomes: Beyond Technical Privacy

Privacy-preserving cross-chain transactions unlock tangible business advantages, from new revenue streams to enhanced compliance. We deliver the infrastructure that turns cryptographic privacy into commercial results.

01

Regulatory-Compliant DeFi

Deploy cross-chain applications that meet evolving MiCA, FATF Travel Rule, and OFAC compliance requirements without sacrificing user privacy. Our selective disclosure proofs enable auditability on-demand.

EXPLORE
02

Institutional-Grade Liquidity

Access deep, cross-chain liquidity pools from institutional market makers who require transaction privacy. Our zero-knowledge proofs conceal trade size and direction, preventing front-running and slippage.

> $10M
Typical Private Swap Size
< 0.1%
Avg. Slippage
03

Enterprise Data Confidentiality

Protect sensitive business logic and transaction patterns when interacting with public blockchains. Shield proprietary trading strategies, supply chain data, and financial settlements from public exposure.

ZK-SNARKs
Proof System
No Data Leakage
Guarantee
04

Faster Time-to-Market

Integrate production-ready privacy layers in weeks, not months. We provide audited, modular smart contracts and relayers for Ethereum, Arbitrum, Polygon, and other major EVM chains.

4-6 weeks
Integration Timeline
99.9%
Relayer Uptime SLA
05

Reduced Operational Risk

Minimize exposure to regulatory scrutiny and reputational damage. Our architecture isolates compliance logic from core transaction privacy, providing legal defensibility for your cross-chain operations.

EXPLORE
06

Competitive Market Advantage

Launch features competitors cannot replicate on transparent chains. Enable private auctions, confidential DAO voting, and stealth token launches that attract high-value users and institutional clients.

Infrastructure Decision Analysis

Build vs. Buy: Privacy-Preserving Cross-Chain API

A detailed comparison of the costs, risks, and time investment required to build a privacy-preserving cross-chain system in-house versus using Chainscore's managed API service.

FactorBuild In-HouseChainscore API

Time to Production

6-12 months

2-4 weeks

Initial Development Cost

$300K - $750K+

$25K - $75K setup

Annual Maintenance Cost

$150K - $300K (2-3 engineers)

From $60K / year

Security & Audit Overhead

High (unaudited code, custom ZK circuits)

Low (pre-audited, battle-tested protocols)

Supported Privacy Models

Custom (ZK-SNARKs, TEEs, MPC)

ZK-SNARKs, Confidential Transactions, Stealth Addresses

Cross-Chain Coverage

Limited to 2-3 chains initially

10+ EVM & non-EVM chains (Ethereum, Polygon, Arbitrum, Solana, etc.)

Uptime & Reliability SLA

Your responsibility (target 99.5%)

99.9% SLA with 24/7 monitoring

Compliance & Regulatory Risk

Your legal team's burden

Built-in compliance tools & audit trails

Team Expertise Required

Cryptography researchers, blockchain devs, DevOps

Your existing Web3 team + our specialists

Total Cost of Ownership (3 Years)

$750K - $1.5M+

$150K - $300K

how-we-deliver
PREDICTABLE, TRANSPARENT, AND SECURE

Our Delivery Process: From Architecture to Production

We deliver production-ready, privacy-preserving cross-chain infrastructure through a structured, milestone-driven process. This ensures technical excellence, predictable timelines, and zero surprises.

01

Architecture & Protocol Design

We design a custom architecture selecting the optimal privacy primitives (ZK-SNARKs, MPC, TEEs) and cross-chain protocols (LayerZero, Axelar, Wormhole) for your specific use case and threat model.

1-2 weeks
Design Phase
3+ Options
Architecture Reviewed
02

Smart Contract & Circuit Development

Our engineers develop and audit-ready smart contracts (Solidity, Rust) and zero-knowledge circuits (Circom, Halo2) to enforce privacy and cross-chain logic with gas optimization in mind.

OpenZeppelin
Security Standards
Gas-Optimized
Code Focus
03

Security Audit & Formal Verification

Every component undergoes rigorous internal review followed by a third-party audit from firms like Spearbit or Zellic. Critical circuits receive formal verification for mathematical correctness.

2 Audits
Minimum Standard
0 Critical
Post-Audit Target
04

Testnet Deployment & Simulation

We deploy the full system on designated testnets (Sepolia, Arbitrum Goerli) and run extensive simulations, including stress tests and adversarial scenarios, to validate performance and resilience.

> 1000
Tx Simulations
< 3 sec
Target Latency
05

Mainnet Launch & Monitoring

We manage the phased mainnet rollout with fail-safes and provide 24/7 monitoring via our proprietary dashboard, tracking cross-chain message success rates and privacy pool health.

Phased Rollout
Launch Strategy
99.5% SLA
Message Delivery
06

Documentation & Knowledge Transfer

We deliver comprehensive technical documentation, operational runbooks, and conduct training sessions for your team, ensuring full ownership and seamless ongoing maintenance.

Full Docs
Delivered
2 Sessions
Handover Training
Privacy-Preserving Cross-Chain Transactions

Frequently Asked Questions

Get clear answers about our development process, security, and timelines for implementing private cross-chain solutions.

A standard implementation for a privacy-preserving cross-chain bridge takes 4-8 weeks from design to mainnet deployment. This includes 1 week for architecture design, 2-3 weeks for core smart contract and zero-knowledge circuit development, 1 week for integration testing, and 1-2 weeks for security audits and deployment. Complex multi-chain setups or custom privacy models may extend this timeline, which we scope and quote upfront.

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