We architect and deploy custom smart contracts on EVM-compatible chains (Ethereum, Polygon, Arbitrum) and Solana. Our development process is built for security and speed, delivering a minimum viable product (MVP) in 2-4 weeks.
LABS
Services
Privacy-Preserving Paymaster Systems
We design and deploy custom paymaster systems that use zero-knowledge proofs to sponsor user transactions without exposing sensitive business relationships or on-chain metadata.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your decentralized applications.
Every line of code is written for security first, ensuring your protocol's logic and user assets are protected from day one.
- Full-Stack Development: From token standards (
ERC-20,ERC-721) to complex DeFi logic, cross-chain bridges, and DAO governance systems. - Security-First Process: Development with
OpenZeppelinlibraries, comprehensive unit/integration testing, and third-party audit preparation. - Gas Optimization: Expert-level Solidity to minimize transaction costs and maximize user savings.
- Ongoing Maintenance: Post-deployment support, upgrade management, and monitoring for seamless operation.
key-features-cards
ENTERPRISE-GRADE INFRASTRUCTURE
Core Capabilities of Our Paymaster Systems
Our privacy-preserving paymaster systems are engineered to abstract gas complexity, enhance user experience, and secure your transactions without compromising on-chain privacy or performance.
01
Gas Abstraction & Sponsorship
Eliminate user friction by sponsoring transaction fees. We handle gas estimation, multi-chain fee management, and flexible sponsorship models (full, partial, conditional) to drive adoption.
0 Gas
For End-Users
Multi-Chain
Fee Management
02
Privacy-Preserving Transaction Relaying
Deploy paymaster systems that relay user operations without exposing sender addresses or transaction intent. Integrate with privacy layers like Aztec, zkSync, and StarkNet for enhanced confidentiality.
Sender Privacy
Guaranteed
Intent Obfuscation
Standard
03
Smart Account & ERC-4337 Integration
Seamlessly integrate with ERC-4337 Account Abstraction standards. Our systems enable batched operations, social recovery, and session keys for a seamless Web3 onboarding experience.
ERC-4337
Native Support
Batched Ops
Supported
04
Real-Time Fraud & Sybil Detection
Protect your subsidy pool with ML-driven risk engines. We analyze transaction patterns in real-time to prevent drain attacks, sybil farming, and unauthorized sponsorship claims.
< 100ms
Threat Analysis
ML-Powered
Detection
05
Multi-Chain & Cross-Chain Operation
Deploy a unified paymaster infrastructure across Ethereum, Polygon, Arbitrum, Optimism, and other EVM chains. Manage subsidies and policies from a single dashboard.
10+ Chains
Supported
Unified Dashboard
Single Pane
06
Audited Security & Compliance Ready
Our smart contracts and relay systems undergo rigorous audits by firms like Trail of Bits and CertiK. Built with OpenZeppelin libraries and secure development lifecycle practices.
Third-Party Audits
Completed
OpenZeppelin
Standards
benefits
MEASURABLE RESULTS
Business Outcomes for FinTechs & NeoBanks
Our privacy-preserving paymaster infrastructure delivers concrete advantages, enabling you to launch compliant, user-friendly products faster while protecting your bottom line.
01
Regulatory Compliance by Design
Deploy with built-in compliance for KYC/AML and travel rule requirements (FATF 16). Our zero-knowledge proof architecture ensures user privacy without sacrificing regulatory audit trails.
FATF 16
Compliance Ready
ZK-Proofs
Privacy Layer
02
Reduced User Acquisition Costs
Eliminate the onboarding friction of managing native gas tokens. Users pay fees in your app's native currency (USD, EUR), increasing conversion rates and lowering CAC by simplifying the first transaction.
0
Gas Complexity
Fiat On-Ramp
Direct Integration
03
Predictable Operational Costs
Move from volatile, unpredictable gas fees to fixed, subscription-based or per-transaction billing. Gain full visibility into your Web3 infrastructure spend with detailed analytics and reporting.
Fixed Fee
Pricing Model
Real-time
Cost Dashboard
04
Enhanced User Experience & Retention
Offer seamless, app-embedded transactions that feel like traditional finance. Batch multiple operations into a single sponsored transaction, reducing user steps and increasing session completion rates.
1-Click
Transaction Flow
Batch Tx
Gas Abstraction
05
Faster Product Time-to-Market
Integrate a production-ready, audited paymaster system in weeks, not months. Our SDKs and APIs for EVM chains (Ethereum, Polygon, Arbitrum) let your team focus on core product logic.
< 3 weeks
Integration Time
Multi-Chain
EVM Support
06
Enterprise-Grade Security & Reliability
Leverage infrastructure with a 99.9% uptime SLA, built on audited smart contracts and managed node infrastructure. Isolate financial risk with dedicated, non-custodial sponsor wallets.
99.9%
Uptime SLA
Audited
Smart Contracts
Structured Implementation Roadmap
Phased Development & Integration Path
A clear, phased approach to deploying a custom privacy-preserving paymaster system, from initial audit to full-scale production with managed operations.
| Phase & Deliverables | Audit & Deploy | Integrate & Scale | Managed Operations |
|---|---|---|---|
Smart Contract Security Audit | |||
Paymaster Contract Deployment | |||
Custom Privacy Module (ZK/MPC) | |||
Gas Sponsorship Dashboard | |||
Multi-Chain Support (Up to 3) | |||
24/7 System Monitoring & Alerts | |||
SLA-Backed Incident Response | Best Effort | < 24h | < 4h |
Ongoing Protocol Updates | Manual | Semi-Automated | Fully Managed |
Typical Timeline | 2-4 weeks | 4-8 weeks | Ongoing |
Engagement Model | Project-Based | Project + Retainer | Fully Managed Service |
how-we-deliver
PROVEN FRAMEWORK
Our Development & Integration Methodology
A structured, security-first approach to delivering production-ready privacy-preserving paymaster systems that integrate seamlessly with your existing stack.
01
Architecture & Design Review
We conduct a deep-dive analysis of your transaction flow and user privacy requirements to design a custom paymaster architecture. This includes selecting the optimal zero-knowledge proof framework (e.g., zk-SNARKs via Circom, zk-STARKs) and defining the on-chain/off-chain trust model.
3-5 days
Design Sprint
100%
Requirement Alignment
02
Smart Contract Development & Auditing
Our team builds the core paymaster and sponsor contracts in Solidity 0.8+, leveraging battle-tested libraries like OpenZeppelin. Every contract undergoes internal review and is prepared for submission to top-tier security firms like Trail of Bits or Quantstamp.
2-3 weeks
Development Cycle
Zero Critical
Audit Target
03
ZK Circuit Implementation
We implement the privacy-preserving logic using industry-standard frameworks (Circom, Halo2). This includes circuit design for balance proofs or custom compliance rules, ensuring gas-efficient verification on-chain while keeping user data confidential.
< 200k
Gas Target
Plonk/Groth16
Proof Systems
04
Relayer Infrastructure Deployment
We deploy and configure high-availability relayers to sign and submit sponsored transactions. Infrastructure includes automatic nonce management, gas price optimization, and monitoring dashboards for transaction success rates and cost analytics.
99.9%
Uptime SLA
< 1 sec
Median Relay Time
05
SDK & Frontend Integration
We provide a lightweight SDK (TypeScript/Web3.js/Ethers.js) and integration guides for your dApp frontend. This enables seamless user onboarding with sponsored gas, abstracting away wallet complexity while maintaining a non-custodial experience.
< 50 kB
SDK Size
1-2 days
Integration Time
06
Production Monitoring & Support
Post-launch, we provide comprehensive monitoring of system health, gas sponsorship costs, and anomaly detection. Our team offers ongoing support for upgrades, new feature integration, and scaling the system to handle increased transaction volume.
24/7
Alerting
< 4 hrs
Critical Response
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
We architect and deploy custom smart contracts that form the backbone of your protocol. Our development process is built on audited security patterns and gas-optimized code to ensure reliability and cost-efficiency from day one.
We deliver battle-tested contracts, not experimental code.
Our development stack includes:
- Solidity 0.8+ with OpenZeppelin libraries
- Foundry & Hardhat for comprehensive testing
- EVM-compatible chains (Ethereum, Polygon, Arbitrum, Base)
- Formal verification for critical logic
- Upgradeable proxy patterns for future-proofing
Typical deliverables:
- MVP in 2-4 weeks with core contract suite
- Full technical documentation and deployment scripts
- Integration support for frontends and oracles
- Post-deployment monitoring and incident response
Privacy-Preserving Paymaster Systems
Frequently Asked Questions
Answers to common technical and commercial questions about implementing a custom, compliant paymaster for your application.
From initial design to mainnet deployment, a standard privacy-preserving paymaster system takes 4-6 weeks. This includes a 2-week discovery/design phase, 2-3 weeks of core development and integration, and 1 week for security review and deployment. Complex multi-chain or heavily customized gas abstraction logic can extend this timeline.
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