We architect and deploy battle-tested Solidity and Rust smart contracts that form the foundation of your protocol. Our development process is built on security-first principles and includes comprehensive unit and integration testing before any code is deployed to mainnet.
LABS
Services
Account Abstraction for Seamless Wearable Purchases
We implement ERC-4337 smart account infrastructure to remove wallet friction for your fashion platform. Enable social logins, subscription payments, and sponsored transactions to boost user adoption and revenue.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built to your exact specifications.
- Custom Logic: From
ERC-20tokens andERC-721NFTs to complex DeFi primitives and DAO governance systems. - Security Audits: All contracts undergo internal review against common vulnerabilities and are prepared for third-party audits.
- Gas Optimization: We write efficient code to minimize transaction costs for your end-users.
- Full Documentation: Complete technical specs and user guides for your team and community.
We deliver auditable, maintainable code so you can launch with confidence and scale without refactoring.
key-features-cards
END-TO-END DEVELOPMENT
Core Infrastructure We Deliver
We architect and deploy the complete technical stack required for secure, scalable, and user-friendly wearable commerce on-chain. From smart contracts to user interfaces, we handle the complexity so you can focus on your product.
01
Account Abstraction (ERC-4337) Integration
Implement gas sponsorship, batch transactions, and social recovery to create a seamless, non-custodial wallet experience for your users, removing the friction of seed phrases and gas fees.
< 1 sec
Session Key Auth
ERC-4337
Standard
02
Smart Contract Development & Auditing
Secure, gas-optimized smart contracts for wearable NFTs (ERC-721/1155), payment settlement, and loyalty logic. All contracts undergo internal review and are prepared for third-party audits by firms like CertiK or OpenZeppelin.
100%
Test Coverage
OpenZeppelin
Libraries
03
Cross-Chain Payment Orchestration
Enable purchases with any major token (ETH, USDC, etc.) across Ethereum, Polygon, and other EVM chains. We build the bridging and swap logic for a unified checkout experience.
5+
Chains Supported
< 2 min
Bridge Time
04
Real-Time On-Chain Data Indexing
Custom subgraphs and indexers to track ownership, transaction history, and wearable usage data. Provides the real-time analytics layer for your application and business intelligence.
< 100 ms
Query Latency
The Graph
Protocol
05
Developer SDK & APIs
Comprehensive TypeScript/React SDK and REST APIs for your frontend team. Includes hooks for wallet connection, transaction sending, and state management, accelerating integration.
TypeScript
First
2 weeks
Integration Time
06
DevOps & Node Infrastructure
Managed RPC endpoints, blockchain nodes, and CI/CD pipelines for your smart contracts and backend services. Includes monitoring, alerting, and 99.9% uptime SLAs for production reliability.
99.9%
Uptime SLA
24/7
Monitoring
benefits
DELIVERABLES & METRICS
Measurable Business Outcomes
Our Account Abstraction implementation delivers concrete, quantifiable results that accelerate your wearable commerce product's time-to-market and user adoption.
01
Frictionless Onboarding
Eliminate seed phrase complexity with social logins and email-based wallet creation. We implement ERC-4337-compliant smart accounts to onboard non-crypto users in under 30 seconds.
< 30 sec
First-time user onboarding
90%+
Onboarding completion rate
02
Gasless Transaction Experience
We architect and deploy a secure paymaster system, allowing users to purchase wearables without holding native tokens. Your business absorbs predictable gas costs, not your customers.
0
User gas fees
99.9%
Paymaster uptime SLA
03
Secure Batch & Automated Payments
Enable one-click purchases and subscription models for wearables. We build custom smart account logic for batched transactions and automated recurring payments, reducing failed transactions.
70%
Reduction in failed payments
OpenZeppelin
Security audit standard
04
Cross-Chain Wearable Portability
Implement account abstraction with multi-chain support (EVM-compatible L2s). Users can interact with your marketplace and their digital wearables across networks from a single smart account.
5+
Supported EVM chains
< 1 sec
Cross-chain state sync
05
Reduced Development Overhead
Leverage our pre-audited, modular smart account factories and bundler infrastructure. We deliver a production-ready AA stack, cutting your core development time by months.
8-12 weeks
Average deployment timeline
100%
Custom logic coverage
06
Enhanced User Retention & LTV
Streamlined UX directly translates to higher engagement. Our implementations typically see significant increases in repeat purchase rates and customer lifetime value (LTV).
40%+
Increase in repeat purchases
25%+
Higher user LTV
Structured for Scale
Implementation Tiers & Deliverables
Compare our tailored implementation packages for integrating Account Abstraction into your wearable commerce platform. Each tier includes core smart contract development with increasing levels of support, security, and customization.
| Feature / Deliverable | Starter | Professional | Enterprise |
|---|---|---|---|
Custom ERC-4337 Smart Accounts | |||
Paymaster Integration (Gas Sponsorship) | Basic | Advanced (Multi-token) | Custom Logic & Subsidies |
Bundler Node Setup & Configuration | Managed (Shared) | Dedicated Instance | Multi-chain, High-Availability Cluster |
User Operation Relayer Service | Up to 1K ops/day | Up to 100K ops/day | Unlimited, Auto-scaling |
Smart Contract Security Audit | Automated Scan | Manual Review + Report | Full Audit by 3rd Party Firm |
Integration Support | Documentation & Examples | Direct Developer Support (2 weeks) | Dedicated Technical Account Manager |
SLA & Uptime Guarantee | 99.5% | 99.9% with Financial Credits | |
Emergency Response Time | Best Effort | < 12 Business Hours | < 1 Hour, 24/7 |
Custom Feature Development | Up to 2 Features | Roadmap Collaboration | |
Estimated Timeline | 3-4 Weeks | 6-8 Weeks | 10+ Weeks (Custom) |
Starting Price | $25,000 | $85,000 | Custom Quote |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A streamlined, security-first approach to integrate Account Abstraction into your wearable ecosystem, ensuring a smooth user experience and robust technical foundation.
01
Discovery & Architecture Design
We analyze your wearable hardware, user flows, and business model to design a custom AA architecture. This includes selecting the optimal bundler, paymaster strategy, and smart account standards (ERC-4337, Safe{Core}) for your specific use case.
1-2 weeks
Design Phase
3+ Options
Architecture Reviewed
02
Smart Account & Paymaster Development
Development of gas-abstracted smart contract wallets with session keys for frictionless purchases. We implement and fund custom paymaster logic for sponsor transactions, batch operations, and gas fee optimization.
ERC-4337
Compliant
< 0.1s
Tx Validation
03
Hardware & SDK Integration
Seamless integration of AA SDKs (UserOp.js, Etherspot) with your wearable's firmware and companion app. We handle secure key management, biometric authentication hooks, and offline transaction signing workflows.
iOS/Android
Platforms
BLE/NFC
Protocols Supported
04
Security Audit & Testing
Rigorous testing including unit, integration, and user acceptance testing. All smart contracts undergo a professional security audit (e.g., by Spearbit, Code4rena) before mainnet deployment to ensure fund safety.
100%
Line Coverage
Audit Report
Delivered
05
Deployment & Infrastructure
We deploy your AA stack to production, including bundler nodes, paymaster services, and monitoring dashboards. We ensure high availability with load-balanced RPC endpoints and 24/7 incident response.
99.9%
Uptime SLA
< 48h
Go-Live
06
Analytics & Ongoing Support
Post-launch, we provide analytics on user adoption, gas sponsorship costs, and transaction success rates. We offer ongoing maintenance, smart account upgrades, and scaling support as your user base grows.
Real-time
Dashboards
Enterprise SLA
Support
Account Abstraction for Wearables
Frequently Asked Questions
Get clear answers on how we deliver secure, user-friendly blockchain infrastructure for wearable tech purchases.
We implement ERC-4337 smart accounts and custom paymasters to abstract away blockchain complexity. Users can purchase wearables using familiar Web2 methods (credit cards, Apple Pay) while the backend settles on-chain. Our system handles gas sponsorship, batch transactions, and session keys for seamless, one-click purchases directly from the device.
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