We deliver battle-tested Solidity and Rust smart contracts with a focus on security-first development. Our process includes formal verification, gas optimization, and comprehensive unit/integration testing to ensure reliability from day one.
LABS
Services
Stealth Transaction Relayer Service
We build and operate secure, scalable infrastructure that sponsors gas fees for stealth transactions. Remove user friction and preserve sender anonymity for your dApp.
Chainscore © 2026
overview
CORE SERVICES
Smart Contract Development
Secure, audited smart contracts built for production by expert Solidity engineers.
- Production-Ready Code: Built on
OpenZeppelinstandards with custom logic for DeFi, NFTs, and DAOs. - Rapid Deployment: Go from spec to testnet in 2-3 weeks with our iterative development sprints.
- Audit-Ready Deliverables: Receive fully documented code with inline
NatSpeccomments and a security review report.
We guarantee zero critical vulnerabilities in our delivered code, backed by our multi-layered review process and experience deploying over 50+ contracts on Mainnet.
key-features-cards
ENTERPRISE-GRADE RELAYER NETWORK
Core Infrastructure Capabilities
Our stealth transaction relayer is built on battle-tested infrastructure designed for high-volume, mission-critical applications. We provide the technical foundation so you can focus on your product.
01
High-Availability Relay Network
Multi-region, load-balanced node architecture ensuring transaction submission is never a single point of failure. Achieves 99.9% uptime SLA for critical on-chain operations.
99.9%
Uptime SLA
< 50ms
P99 Latency
02
Gas Optimization Engine
Proprietary algorithm that dynamically selects optimal gas prices and strategies (EIP-1559, private mempools) to minimize costs while ensuring timely execution, even during network congestion.
15-40%
Avg. Gas Savings
Real-time
Strategy Updates
03
Privacy-First Architecture
End-to-end encrypted transaction flow. User intent and final payload are decoupled, with no sensitive data stored in logs or intermediate systems. Built to enterprise security standards.
SOC 2 Type II
Compliance
Zero-Knowledge
Proof Support
04
Multi-Chain & L2 Support
Native integration with Ethereum, Arbitrum, Optimism, Polygon, and Base. Unified API abstracts chain-specific complexities, enabling seamless cross-chain application logic.
5+
Networks Supported
Single API
Integration Point
05
Real-Time Monitoring & Alerts
Comprehensive dashboard with real-time metrics on transaction success rates, gas spend, and network health. Configurable alerts for failures or anomalous patterns via webhook, Slack, or PagerDuty.
< 60 sec
Alert Time
Full Trace
Transaction Visibility
benefits
KEY BENEFITS
Why Integrate a Managed Relayer
A managed relayer service eliminates infrastructure complexity, allowing your team to focus on core product development while ensuring transaction privacy and reliability.
01
Zero Infrastructure Overhead
We manage all node operations, gas management, and key storage. Your engineering team avoids the DevOps burden of maintaining and securing relay infrastructure.
0 hours
DevOps overhead
100%
Uptime in 2024
02
Enterprise-Grade Security & Compliance
Our relayer infrastructure is built with institutional-grade security practices, including MPC for key management and regular audits. We ensure compliance with evolving regulatory standards for privacy-preserving transactions.
SOC 2 Type II
Compliance
MPC
Key Management
03
Guaranteed Transaction Success
We provide automatic gas optimization, nonce management, and transaction queuing to prevent failures. Our system handles network congestion and ensures your stealth transactions are processed reliably.
99.9%
Success Rate SLA
< 2 sec
Avg. Relay Time
04
Seamless Multi-Chain Support
Deploy your privacy features across Ethereum, Polygon, Arbitrum, and other major EVM chains from a single integration. We handle chain-specific nuances and gas token management.
10+
Supported Chains
1 API
Unified Integration
05
Cost Predictability & Optimization
Eliminate gas price volatility with our fixed-fee pricing model. Our algorithms batch and optimize transactions to minimize costs, providing clear, predictable operational expenses.
40%
Avg. Gas Savings
Fixed Fee
Pricing Model
06
Rapid Integration & Developer Support
Get your stealth transaction feature live in days, not months. Our comprehensive SDKs, detailed documentation, and dedicated technical support ensure a smooth integration process.
< 1 week
Integration Time
24/7
Developer Support
Strategic Decision Analysis
Build vs. Buy: Relayer Infrastructure
A detailed comparison of the total cost, risk, and time investment required to develop and maintain a stealth transaction relayer in-house versus leveraging Chainscore's managed service.
| Factor | Build In-House | Chainscore Managed Service |
|---|---|---|
Time to Production | 6-12+ months | 4-8 weeks |
Initial Development Cost | $250K - $600K+ | $50K - $150K |
Ongoing Annual Maintenance | $150K - $300K (2-3 FTEs) | Optional SLA from $60K/year |
Security & Audit Burden | High (Unaudited, custom code) | Low (Pre-audited, battle-tested modules) |
Protocol & Chain Support | Months to add new chains | Pre-built for Ethereum, Polygon, Arbitrum, Base, Optimism |
Gas Optimization & Fee Management | Custom R&D required | Built-in dynamic fee strategies & sponsorship |
Monitoring & Alerting | Requires custom dashboard build | Included with real-time analytics & alerts |
Team Expertise Required | Senior Solidity, DevOps, Cryptography | Your team focuses on core product logic |
Total 3-Year Cost (Est.) | $700K - $1.5M+ | $230K - $450K |
Business Risk | High (Delays, vulnerabilities, attrition) | Low (Predictable delivery, SLAs, expert support) |
how-we-deliver
PREDICTABLE & TRANSPARENT
Our Delivery Process
From initial consultation to production deployment, our structured process ensures your stealth transaction relayer is delivered on time, on budget, and built to enterprise security standards.
01
Discovery & Architecture
We conduct a deep technical analysis of your use case to design a custom relayer architecture. We define key parameters like privacy levels (zk-SNARKs vs. trusted setup), gas optimization strategies, and integration points with your existing wallet or dApp.
1-2 days
Initial Scoping
Zero-Knowledge
Privacy Options
02
Smart Contract Development
Our engineers write, test, and audit the core stealth pool and relayer contracts in Solidity/Vyper. We implement battle-tested patterns from Tornado Cash and Aztec, with custom modifications for your specific token standards and compliance logic.
OpenZeppelin
Security Base
2-3 weeks
Avg. Dev Time
03
Backend Relayer Service
We deploy a high-availability Node.js/Go service that monitors the mempool, submits private transactions, and manages gas sponsorship. The service includes automatic nonce management, fee optimization, and failover mechanisms for 24/7 reliability.
99.9%
Uptime SLA
< 500ms
Avg. Relay Time
04
Security Audit & Hardening
Every component undergoes rigorous internal review followed by an optional external audit with partners like Spearbit or Code4rena. We provide a formal verification report and implement all critical recommendations before mainnet deployment.
100%
Critical Issues Fixed
Formal Report
Deliverable
05
Staging & Integration
We deploy the complete system to a testnet/staging environment (Sepolia, Holesky) and provide comprehensive integration guides and SDKs. We work directly with your team to test end-to-end flows, including frontend wallet integration and admin dashboards.
Full SDK
Provided
1 week
Integration Support
06
Production Launch & Monitoring
We manage the mainnet deployment and initial liquidity seeding for the stealth pool. Post-launch, we provide 30 days of included monitoring and support, with dashboards for tracking relay volume, gas costs, and system health.
30 days
Included Support
Live Dashboards
Monitoring
security
CORE SERVICE
Smart Contract Development
Secure, audited smart contracts built for production, from MVP to enterprise scale.
We architect and deploy custom smart contracts on EVM and Solana that power your core business logic. Our process delivers production-ready code in 2-4 weeks, with a focus on security, gas optimization, and upgradability from day one.
- Security-First Development: Built with
OpenZeppelinstandards, formal verification, and two independent audit passes before mainnet deployment. - Full-Stack Integration: Contracts designed for seamless interaction with your front-end and backend, including indexers and oracles.
- Clear Deliverables: You receive verified source code, comprehensive documentation, and a deployment roadmap.
We don't just write code; we deliver the secure, audited foundation your application needs to launch with confidence and scale without refactoring.
Technical & Commercial Details
Stealth Relayer FAQs
Answers to the most common questions CTOs and technical founders ask when evaluating a stealth transaction relayer service.
A standard stealth relayer deployment takes 2-4 weeks from kickoff to mainnet launch. This includes smart contract development, integration with your existing dApp, and rigorous security testing. For complex integrations requiring custom privacy pools or multi-chain support, timelines extend to 6-8 weeks. We provide a detailed project plan with weekly milestones during the scoping phase.
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