We architect, develop, and audit custom smart contracts that form the unbreakable logic layer of your Web3 application. Our code is built on Solidity 0.8+ with OpenZeppelin standards and undergoes rigorous internal review before deployment.
LABS
Services
Mobile Wallet for Cross-Rollup Interoperability
We develop mobile wallets that natively aggregate and manage assets across disparate ZK-rollup ecosystems, featuring unified bridging, proof verification, and cross-rollup transaction batching.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by experts for DeFi, NFTs, and enterprise applications.
- DeFi Protocols: DEXs, lending/borrowing platforms, yield aggregators.
- Token Systems: Custom
ERC-20,ERC-721, andERC-1155with advanced minting and governance. - Enterprise Logic: Supply chain tracking, credential verification, and automated escrow.
We deliver battle-tested contracts with a focus on gas optimization and security-first design, reducing audit cycles and mitigating costly vulnerabilities.
key-features-cards
BUILT FOR ENTERPRISE SCALE
Core Technical Capabilities
Our mobile wallet infrastructure is engineered from the ground up for secure, seamless cross-rollup interoperability. We deliver the technical foundation so your team can focus on user experience and growth.
01
Cross-Rollup Messaging & Bridging
Secure, non-custodial bridging between Ethereum L2s (Arbitrum, Optimism, zkSync) and L1. We implement canonical bridges, third-party bridges (e.g., Across, Hop), and native messaging layers for unified asset management.
< 5 min
Avg. Bridge Time
0.1%
Max Bridge Fee
02
Secure MPC & Key Management
Enterprise-grade Multi-Party Computation (MPC) wallet architecture. Private keys are never stored in full, eliminating single points of failure. Supports social recovery and hardware security module (HSM) integration.
SOC 2 Type II
Compliance
FIPS 140-2
Crypto Module
03
Gas Abstraction & Sponsorship
Enable users to pay fees in any token or pay nothing at all. We implement ERC-4337 Account Abstraction, Paymaster integrations, and gas sponsorship models to eliminate UX friction for onboarding.
0 Gas
For End-Users
ERC-4337
Standard
04
Real-Time Portfolio Aggregation
Unified balance and transaction history across all connected chains and rollups. Our indexing layer provides sub-second updates for tokens, NFTs, and DeFi positions without relying on centralized APIs.
< 1 sec
Data Latency
10+ Chains
Supported
05
Custom RPC & Node Infrastructure
Dedicated, load-balanced RPC endpoints for every supported chain with failover and geolocation. Built on Geth, Erigon, and Nethermind clients with 24/7 monitoring and alerting.
99.95%
Uptime SLA
< 200ms
P95 Latency
06
Compliance & Risk Engine
On-chain transaction screening for sanctions, AML, and fraud. Real-time risk scoring, configurable transaction policies, and audit trails designed for regulated FinTech and enterprise deployments.
10k+ TPS
Screening Capacity
< 50ms
Risk Decision
benefits
TANGIBLE RESULTS
Business Outcomes for Your Product
Our mobile wallet for cross-rollup interoperability delivers more than just features. It drives measurable business growth by solving core user and developer pain points.
01
Accelerated User Onboarding
Reduce new user activation time from days to minutes with seamless cross-chain asset bridging directly in the wallet. No manual bridge hunting or complex RPC switching required.
< 5 min
Avg. Onboarding Time
40%+
Higher Activation Rate
02
Reduced Infrastructure Overhead
Eliminate the need to build and maintain separate bridging infrastructure for each rollup. Our unified SDK handles cross-rollup messaging, state proofs, and finality.
70%
Lower Dev Time
0
Bridge Contracts to Audit
03
Enhanced User Retention & Engagement
Keep users in your ecosystem by enabling frictionless movement of assets and interactions across Arbitrum, Optimism, zkSync, and Base. One wallet for the entire L2 landscape.
3.5x
Higher Session Duration
50%+
Lower Churn Rate
04
Future-Proof Architecture
Built with modular account abstraction (ERC-4337) and support for native account abstraction rollups. Seamlessly integrate new L2s and L3s as they launch.
< 2 weeks
New Chain Integration
ERC-4337
Native Standard
05
Enterprise-Grade Security & Compliance
Wallet core and cross-chain modules undergo formal verification and audits by leading firms. Includes non-custodial key management and transaction simulation for risk prevention.
99.9%
Uptime SLA
Audited
By Spearbit
06
Faster Time-to-Market
Go from concept to live product in weeks, not months. We provide a white-label wallet solution with your branding, pre-integrated with major rollups and DApps.
4-6 weeks
To Production
Pre-Integrated
With Top 20 DApps
Scalable Implementation Path
Phased Development Tiers
A structured roadmap to build and scale your cross-rollup mobile wallet, from MVP to a fully managed enterprise-grade solution.
| Feature / Deliverable | MVP Launch | Production Scale | Enterprise Managed |
|---|---|---|---|
Core Wallet SDK & UI | |||
Cross-Rollup Bridge Integration (1-2) | |||
Multi-Chain Gas Abstraction | |||
Custom Token & NFT Support | Basic | Advanced | Full Custom |
Transaction Batching & Speed | Standard | Optimized | Premium (<1s) |
Security Audit (Smart Contracts & SDK) | Basic Review | Full Audit + Report | Continuous Auditing |
Deployment & Integration Support | Documentation | Guided Setup | Dedicated Engineer |
Monitoring & Alerting Dashboard | Basic Logs | Real-time Analytics | Custom SLA (99.9%) |
Support & Response Time | Community | Business Hours | 24/7 (<1h Critical) |
Typical Timeline | 4-6 weeks | 8-12 weeks | Custom |
Typical Investment | $25K - $50K | $75K - $150K | Custom Quote |
how-we-deliver
PROVEN METHODOLOGY
Our Development & Integration Process
A systematic, security-first approach to deliver a production-ready mobile wallet with seamless cross-rollup interoperability. We focus on rapid deployment and enterprise-grade reliability.
01
Architecture & Protocol Design
We architect your wallet's core using battle-tested libraries (ethers.js, viem) and design the interoperability layer, selecting optimal bridging protocols (e.g., LayerZero, Hyperlane, native rollup bridges) for your target networks.
2-3 weeks
Design Phase
5+ Protocols
Evaluated
02
Core Wallet & SDK Integration
Development of secure key management (MPC or embedded wallets), transaction signing, and seamless integration of cross-rollup messaging SDKs. Built with React Native/Flutter for a native-feel, high-performance UI.
iOS & Android
Native Builds
< 100ms
Tx Signing Latency
03
Security Audits & Penetration Testing
Comprehensive security review of the entire stack: smart contract interactions, bridge logic, and mobile app security. Includes automated scanning and manual review by our in-house security team.
3rd Party Audits
Available
OWASP MAS
Compliance
04
Staging & Multi-Chain Deployment
We deploy and rigorously test the wallet on testnets across all target rollups (Optimism, Arbitrum, zkSync, etc.). Final production deployment to app stores with CI/CD pipelines for seamless updates.
4 weeks
Avg. Time to Launch
99.9% SLA
Infrastructure Uptime
05
Monitoring & Analytics Integration
Implementation of real-time monitoring for bridge status, transaction success rates, and wallet activity. Integration with tools like Tenderly and Chainscore Analytics for actionable insights.
< 1 min
Alert Response
Full Visibility
On-Chain Data
06
Documentation & Developer Handoff
We provide comprehensive technical documentation, API references, and operational runbooks. Includes training for your team and ongoing support options for maintenance and feature expansion.
48 hours
Support SLA
Full Source Code
Ownership
security
FULL-STACK INFRASTRUCTURE
Custom Blockchain Development
Build, deploy, and scale custom blockchain networks tailored to your business logic.
We architect and implement bespoke blockchain solutions from the ground up. Our team delivers production-ready networks with custom consensus mechanisms, tokenomics, and governance models, ensuring your application has the exact foundation it needs.
From private consortium chains to public L1/L2 networks, we handle the full technical stack so you can focus on your product.
- Core Protocol Development: Custom
EVMorSubstrate-based chains,Cosmos SDKzones, andSolanaprograms. - Node Infrastructure: Automated deployment, monitoring, and management of validator nodes with 99.9% uptime SLAs.
- Smart Contract Suite: Native token standards (
ERC-20,ERC-721), staking, and governance modules. - Security & Audits: Full protocol audits using formal verification and industry-standard tooling before mainnet launch.
Mobile Wallet for Cross-Rollup Interoperability
Frequently Asked Questions
Get clear answers on development timelines, security, and support for your interoperable mobile wallet project.
A production-ready MVP with core interoperability features (e.g., bridging between 2-3 L2s) typically takes 6-8 weeks from kickoff to App Store submission. Complex deployments with custom UI/UX, multi-chain DeFi integrations, or advanced account abstraction can extend to 12-14 weeks. We follow a phased delivery model with weekly demos.
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