We architect and deploy custom smart contracts that are secure, gas-optimized, and tailored to your specific business logic. Our team specializes in Solidity and Rust, delivering contracts for ERC-20, ERC-721, ERC-1155, and complex DeFi protocols.
LABS
Services
Cross-Platform Wallet Sync Engine
We build real-time synchronization engines that maintain a unified wallet state—contacts, preferences, portfolio—across web, mobile, and desktop applications, eliminating user friction and data silos.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3-native engineers.
Every line of code is written with security and scalability as the first priority, ensuring your application's foundation is robust from day one.
- Security-First Development: Adherence to OpenZeppelin standards and comprehensive testing with
Hardhat/Foundry. - Gas Optimization: Expert-level techniques to reduce transaction costs by up to 40% for your users.
- Full Audit Readiness: Contracts are structured and documented for seamless third-party security audits.
key-features-cards
ARCHITECTURE & PERFORMANCE
Core Technical Capabilities of Our Sync Engine
Our enterprise-grade wallet sync engine is built on battle-tested infrastructure, designed to deliver the reliability and performance your application demands. Each capability is engineered to solve a specific technical challenge for scaling Web3 products.
03
Enterprise-Grade Data Integrity
Guaranteed data consistency with idempotent processing and automatic re-org handling. Built-in validation against node RPCs ensures sync accuracy matches the canonical chain state.
Why it matters: Prevents double-spends in accounting, ensures audit trails are correct, and protects your application from corrupted or stale data.
99.99%
Data Accuracy SLA
0
Missed Blocks (P99)
04
Scalable Indexing Infrastructure
Horizontally scalable architecture built on Kafka and Kubernetes, capable of indexing millions of transactions per day per chain. Isolated processing pipelines prevent chain failures from cascading.
Why it matters: Scales linearly with your user growth and chain adoption. Maintains performance during network congestion and ensures high availability for your core wallet features.
10M+
Tx/Day Capacity
< 2 min
Recovery Time Objective
06
Compliance-Ready Data Layer
Structured, queryable history with full traceability from wallet address to on-chain source. Export-ready formats (CSV, Parquet) and APIs designed for audit and regulatory reporting requirements.
Why it matters: Accelerates compliance workflows for FinTechs, reduces manual reconciliation effort, and provides the immutable audit trail required for financial operations.
FATF Travel Rule
Compatible
SOC 2
Infrastructure
benefits
TANGIBLE RESULTS
Business Outcomes of a Unified Wallet State
Our Cross-Platform Wallet Sync Engine delivers more than technical synchronization; it creates measurable business advantages by unifying user identity and assets across every touchpoint.
01
Accelerated User Onboarding
Reduce new user activation time by 90% with a single, persistent wallet state. Users can start interacting with your dApp on mobile and seamlessly continue on desktop, eliminating repetitive setup and verification steps.
90%
Faster Activation
1-Click
Cross-Device Login
02
Enhanced User Retention
Increase user session frequency by 40% by removing friction. A unified state means users never lose their progress, transaction history, or preferences, creating a sticky, omnichannel experience that drives repeat engagement.
40%
Higher Engagement
Zero-Data-Loss
State Persistence
03
Reduced Support & Operational Costs
Cut support tickets related to wallet recovery and sync issues by over 70%. Our conflict-free, real-time sync architecture handles state management automatically, freeing your team from manual reconciliation tasks.
70%
Fewer Support Tickets
Automated
Conflict Resolution
04
Strengthened Security Posture
Implement a centralized security policy and audit trail across all platforms. Monitor and control wallet access from a single pane of glass, enabling faster threat response and consistent compliance with your security standards.
Unified
Security Policy
Real-Time
Threat Monitoring
05
Faster Feature Deployment
Deploy new cross-platform features in weeks, not months. Developers build against a single, authoritative state API, eliminating the need to re-implement complex sync logic for each new client application.
< 3 weeks
Feature Rollout
Single API
Development Target
06
Actionable Cross-Channel Analytics
Gain a complete 360-degree view of user behavior by correlating actions across devices and sessions. This unified data layer enables precise segmentation, personalized campaigns, and data-driven product decisions.
360°
User View
Cross-Channel
Behavior Tracking
Choose the right level of support for your project
Structured Development Tiers for Your Sync Engine
Compare our service tiers for building a secure, scalable cross-platform wallet sync engine. Each tier includes core development with increasing levels of security, support, and operational oversight.
| Feature / Capability | Starter | Professional | Enterprise |
|---|---|---|---|
Multi-Chain Sync Engine Core | |||
Smart Contract Audit (by 3rd Party) | |||
Deployment & Integration Support | Self-service | Guided (2 weeks) | Full-service (4 weeks) |
Real-Time State Sync (WebSocket API) | |||
Historical Data Indexing & API | |||
Uptime SLA & Monitoring | Best effort | 99.5% | 99.9% |
Incident Response Time | Business hours | < 12 hours | < 1 hour |
Dedicated Technical Account Manager | |||
Custom Chain & L2 Integration | Up to 2 | Up to 5 | Unlimited |
Estimated Delivery Timeline | 6-8 weeks | 8-12 weeks | 12-16 weeks |
Starting Price | $45,000 | $120,000 | Custom Quote |
how-we-deliver
PREDICTABLE DELIVERY
Our Development Process: From Architecture to Deployment
A transparent, milestone-driven approach to deliver a production-ready Cross-Platform Wallet Sync Engine in 8-12 weeks.
01
Architecture & Protocol Design
We design a scalable multi-chain architecture, selecting optimal protocols (EVM, Solana, Cosmos SDK) and defining secure sync mechanisms for your specific use case.
2-3 weeks
Design Phase
5+ chains
Architecture Support
02
Core Sync Engine Development
Building the secure, high-availability synchronization layer. Includes state management, conflict resolution, and real-time data propagation across all client platforms.
4-5 weeks
Core Build
99.95%
Sync Uptime SLA
03
Platform SDK Integration
Development of native SDKs for iOS, Android, and Web. We implement secure key management, biometric auth, and a unified API for seamless wallet interaction.
3-4 weeks
SDK Build
< 100ms
Local Auth Latency
04
Security Audit & Penetration Testing
Comprehensive security review of the entire stack, including smart contracts, sync logic, and SDKs. We partner with leading audit firms like Halborn or Quantstamp.
2 weeks
Audit Cycle
Critical: 0
Target Audit Result
05
Staging Deployment & Load Testing
Deploy to a staging environment matching production specs. We conduct rigorous load testing to validate performance under peak user loads and transaction volumes.
10k+ TPS
Load Test Target
< 2 sec
Cross-Platform Sync
06
Production Launch & Monitoring
Managed deployment to your cloud infrastructure (AWS, GCP) with full monitoring, alerting, and 24/7 SRE support. We provide detailed runbooks and handover documentation.
1 week
Go-Live
24/7
Post-Launch Support
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
We architect, develop, and deploy custom smart contracts that form the backbone of your Web3 application. Our focus is on security-first development, gas optimization, and future-proof architecture.
- Full Lifecycle Development: From initial design and
Solidity/Rustcoding to deployment onEVM/Solanaand ongoing maintenance. - Security Audits & Best Practices: Built with
OpenZeppelinstandards, followed by internal review and preparation for third-party audits. - Key Deliverables:
ERC-20,ERC-721, custom DeFi logic, multi-signature wallets, and upgradeable proxy patterns.
We deliver battle-tested contracts that reduce vulnerabilities and ensure your protocol's integrity from day one.
Technical & Commercial Details
Frequently Asked Questions on Wallet Sync Development
Get clear answers on timelines, security, and process for our enterprise-grade wallet synchronization engine.
A standard cross-platform wallet sync engine deployment takes 2-4 weeks from kickoff to production. This includes architecture design, core sync logic development, multi-platform SDK integration, and security audits. Complex requirements like custom consensus for state resolution or support for 10+ blockchains can extend the timeline to 6-8 weeks. We provide a detailed project plan with weekly milestones.
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