AppChain CoinJoin Design | Chainscore Labs

overview

CORE SERVICE

Smart Contract Development

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

We architect and deploy audit-ready smart contracts that power your core business logic. Our development process is built on Solidity 0.8+ with OpenZeppelin standards, ensuring security and interoperability from day one.

Token Systems: Custom ERC-20, ERC-721, and ERC-1155 with advanced features like vesting, staking, and governance.
DeFi Protocols: Automated Market Makers (AMMs), lending/borrowing pools, and yield optimizers.
Enterprise Logic: Multi-signature wallets, access control systems, and compliant asset tokenization.

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

Every contract undergoes rigorous internal review and is structured for seamless integration with frontends and off-chain systems. We deliver fully documented code and a clear upgrade path for future iterations.

key-features-cards

PRIVATE, SCALABLE, COMPLIANT

Core Design Capabilities

We architect custom CoinJoin protocols tailored to your application-specific blockchain, balancing privacy, performance, and regulatory requirements.

Custom UTXO/Account Model Design

We design the underlying transaction model for your AppChain, whether UTXO-based for maximal privacy or account-based for EVM compatibility, ensuring efficient CoinJoin batching.

EXPLORE

Zero-Knowledge Proof Integration

Incorporate zk-SNARKs or zk-STARKs to provide cryptographic proof of transaction validity without revealing sender, receiver, or amount, enabling regulatory-compliant privacy.

EXPLORE

Decentralized Coordinator (DLC) Architecture

Build a fault-tolerant, non-custodial coordinator network to manage CoinJoin rounds, eliminating single points of failure and censorship risks for your users.

EXPLORE

Regulatory & Compliance Logic Layer

Embed programmable compliance checks (e.g., Travel Rule, sanctions screening) directly into the protocol logic, enabling privacy with auditability for institutional adoption.

EXPLORE

Cross-Chain Privacy Gateway Design

Engineer secure bridges and relayers that allow private assets from your AppChain to interact with public DeFi ecosystems like Ethereum or Solana while preserving anonymity sets.

EXPLORE

Cryptographic Audit & Formal Verification

Every protocol design undergoes rigorous review by our in-house cryptographers and is prepared for external audits by firms like Trail of Bits, ensuring mathematical soundness.

EXPLORE

benefits

TAILORED PRIVACY FOR YOUR ECOSYSTEM

Why a Bespoke AppChain Mixer

Generic privacy tools are not designed for your chain's specific consensus, tokenomics, or user experience. A custom CoinJoin protocol integrates seamlessly, enhancing privacy without compromising performance or security.

Native Token & Fee Integration

Design a mixer that works with your native gas token and governance assets, not just ETH. Eliminate cross-chain friction and provide a unified user experience for your community.

Cross-Chain Bridges Required

Native Gas

Transaction Fees

Optimized for Your Consensus

Leverage your chain's finality speed (e.g., Tendermint, Avalanche, Polygon CDK) to reduce anonymity set formation time from hours to minutes, directly improving user wait times.

< 5 min

Anonymity Set Formation

Chain-Native

Finality Leveraged

Regulatory & Compliance Alignment

Build with configurable privacy layers—from fully private to compliance-ready modes with selective disclosure—ensuring your protocol meets jurisdictional requirements from day one.

ZK-Proofs

Auditability Option

Configurable

Privacy Modes

Superior Economic Security

Mitigate chain-specific MEV and front-running risks by designing deposit/withdrawal logic that accounts for your validator set and block construction rules.

Validator-Aware

Design

MEV-Resistant

Withdrawal Logic

Seamless dApp & Wallet Integration

Deliver SDKs and APIs tailored for your ecosystem's dominant wallets and dApps, making privacy a feature, not a standalone product. We handle the complex integration.

Ecosystem SDKs

Provided

< 2 weeks

Integration Time

Proven Cryptographic Implementation

Our designs use formally verified components from libraries like Halo2 and circom, audited by firms like Trail of Bits. We deliver security you can stake your reputation on.

The Strategic Decision for Your Protocol

Build vs. Buy: AppChain Privacy

Comparing the resource investment and risk profile of developing a custom CoinJoin implementation versus partnering with Chainscore Labs for a production-ready, secure solution.

Key Factor	Build In-House	Partner with Chainscore
Time to Production	6-12 months	4-8 weeks
Initial Development Cost	$200K - $500K+	$50K - $150K
Security Audit Burden	High (unaudited, high risk)	Low (pre-audited, battle-tested)
Core Expertise Required	Cryptography, ZKPs, MEV resistance	Your team's core business logic
Ongoing Maintenance & Updates	Full-stack team required	Managed service with optional SLA
Integration Complexity	High (custom wallet, relayer, mixer)	Low (SDK & API-first)
Regulatory Compliance Design	Your responsibility	Built-in privacy-preserving compliance hooks
Time to First Value	6 months	< 30 days

how-we-deliver

METHODOLOGY

Our Design & Delivery Process

A structured, security-first approach to designing and deploying a privacy-preserving CoinJoin protocol tailored to your application-specific blockchain.

Architecture & Threat Modeling

We conduct a comprehensive analysis of your AppChain's consensus, transaction model, and economic incentives to design a CoinJoin protocol that integrates seamlessly. This includes threat modeling for deanonymization attacks and defining clear privacy guarantees.

1-2 weeks

Design Phase

Cryptographic Implementation

Our team implements the core protocol using battle-tested cryptographic primitives (e.g., Pedersen Commitments, Zero-Knowledge Range Proofs). We focus on gas efficiency for L2s and computational overhead for standalone chains.

ZK-SNARKs/STARKs

Proof Systems

Smart Contract & Node Development

We deliver the on-chain coordinator/mixer contracts and the off-chain participant client software. Development follows best practices with modular, upgradeable architecture and extensive inline documentation.

OpenZeppelin

Security Foundation

Security Audit & Formal Verification

Every protocol undergoes rigorous internal review and external audit by specialized blockchain security firms. Critical components are formally verified to ensure mathematical correctness of privacy properties.

2+ Audits

Standard Deliverable

Testnet Deployment & Simulation

We deploy the complete system on a testnet mirroring your production environment. We run large-scale simulations to stress-test anonymity sets, measure performance under load, and validate economic incentives.

>10k TX

Simulation Scale

Mainnet Launch & Monitoring

We manage the production deployment and provide ongoing monitoring for the first 30 days. We track key metrics like anonymity set size, round efficiency, and gas costs, ensuring a smooth launch.

30-day

Launch Support

Technical & Commercial Details

AppChain CoinJoin Protocol FAQ

Answers to the most common questions from CTOs and founders evaluating a custom CoinJoin protocol for their application-specific blockchain.

A complete AppChain CoinJoin protocol, from architectural design to mainnet deployment, typically takes 4-8 weeks. This includes 1 week for requirements analysis, 2-3 weeks for core protocol design and smart contract development, 1-2 weeks for internal security review and testing, and 1 week for deployment and integration. For simpler implementations or forks of existing models, timelines can be as short as 2-3 weeks.

AppChain-Specific CoinJoin Protocol Design

Smart Contract Development

Core Design Capabilities

Custom UTXO/Account Model Design

Zero-Knowledge Proof Integration

Decentralized Coordinator (DLC) Architecture

Regulatory & Compliance Logic Layer

Cross-Chain Privacy Gateway Design

Cryptographic Audit & Formal Verification

Why a Bespoke AppChain Mixer

Native Token & Fee Integration

Optimized for Your Consensus

Regulatory & Compliance Alignment

Superior Economic Security

Seamless dApp & Wallet Integration

Proven Cryptographic Implementation

Build vs. Buy: AppChain Privacy

Our Design & Delivery Process

Architecture & Threat Modeling

Cryptographic Implementation

Smart Contract & Node Development

Security Audit & Formal Verification

Testnet Deployment & Simulation

Mainnet Launch & Monitoring

AppChain CoinJoin Protocol FAQ

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today.

AppChain-Specific CoinJoin Protocol Design

Smart Contract Development

Core Design Capabilities

Custom UTXO/Account Model Design

Zero-Knowledge Proof Integration

Decentralized Coordinator (DLC) Architecture

Regulatory & Compliance Logic Layer

Cross-Chain Privacy Gateway Design

Cryptographic Audit & Formal Verification

Why a Bespoke AppChain Mixer

Native Token & Fee Integration

Optimized for Your Consensus

Regulatory & Compliance Alignment

Superior Economic Security

Seamless dApp & Wallet Integration

Proven Cryptographic Implementation

Build vs. Buy: AppChain Privacy

Our Design & Delivery Process

Architecture & Threat Modeling

Cryptographic Implementation

Smart Contract & Node Development

Security Audit & Formal Verification

Testnet Deployment & Simulation

Mainnet Launch & Monitoring

AppChain CoinJoin Protocol FAQ

Get In Touch today.

Get In Touch
today.