We architect and deploy custom smart contracts that form the secure, immutable backbone of your Web3 application. Our development process ensures gas-optimized code and comprehensive security audits before mainnet deployment.
LABS
Services
Cross-Chain Wallet Integration for DeFi
We build seamless SDKs and APIs that enable DeFi wallets and dApps to initiate, track, and complete cross-chain payments and swaps from a single, unified interface.
Chainscore © 2026
overview
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built for scale and compliance.
- Token Standards: Custom
ERC-20,ERC-721,ERC-1155, andERC-4626vaults. - DeFi Primitives: Automated market makers (AMMs), lending pools, staking contracts, and vesting schedules.
- Governance Systems: DAO frameworks with proposal, voting, and treasury management modules.
- Enterprise Logic: Custom business rules, multi-signature controls, and compliance hooks.
We deliver battle-tested contracts with a focus on security-first development, utilizing OpenZeppelin libraries and formal verification tools to mitigate risk.
From a 2-week MVP to a complex multi-chain protocol, we provide end-to-end development with 99.9% uptime SLAs for critical functions. Our contracts are built for maintainability, upgradeability, and seamless integration with your front-end.
key-features-cards
ENGINEERED FOR SCALE
Core Capabilities of Our Integration SDK
A purpose-built SDK that abstracts the complexity of cross-chain infrastructure, enabling your team to focus on building your DeFi product, not managing wallets.
benefits
DELIVERABLES & GUARANTEES
Business Outcomes for Your Product
Our cross-chain wallet integration service delivers measurable improvements to your DeFi product's performance, security, and user acquisition. We focus on concrete outcomes, not just technical features.
01
Multi-Chain User Onboarding
Enable users from any major chain (Ethereum, Solana, Polygon, Arbitrum) to connect in under 30 seconds. We implement WalletConnect v2, dynamic RPC switching, and unified session management to eliminate chain-specific friction.
< 30 sec
Avg. Connect Time
10+
Supported Chains
02
Secure Cross-Chain Asset Management
Integrate battle-tested bridging protocols (LayerZero, Axelar, Wormhole) with secure in-app custody. We deliver audited smart contracts for wrapping/unwrapping and real-time balance aggregation across all connected wallets.
100%
Audit Coverage
0
Critical Vulnerabilities
03
Unified Transaction Experience
Provide a single, consistent interface for signing transactions across EVM, SVM, and other VMs. Our integration handles gas estimation, nonce management, and error handling, abstracting chain complexity from your end-users.
99.9%
Tx Success Rate
< 2 sec
Gas Estimation
04
Real-Time Portfolio Dashboard
Deploy a consolidated view of user assets, positions, and yields across all integrated chains. We aggregate data from multiple indexers and RPCs, providing sub-5-second updates for informed DeFi decision-making.
< 5 sec
Data Refresh
50+
Protocols Indexed
05
Reduced Development Overhead
Leverage our pre-built, modular SDK and maintained infrastructure. We handle RPC failover, chain upgrades, and protocol changes, freeing your team to focus on core product logic instead of wallet maintenance.
80%
Dev Time Saved
24/7
Infra Monitoring
Structured Roadmap for DeFi Wallet Integration
Phased Development & Integration Tiers
Compare our structured service tiers designed to match your project's stage, from initial MVP to enterprise-grade deployment. Each tier includes the core deliverables, support, and security required for secure, scalable cross-chain wallet functionality.
| Capability | MVP Launch | Growth Scale | Enterprise |
|---|---|---|---|
Supported Chains | Ethereum, Polygon | Adds Arbitrum, Base, Optimism | Custom Multi-Chain & L2 Strategy |
Wallet Connectors | MetaMask, WalletConnect | Coinbase Wallet, Rabby | Custom Branded Wallet SDK |
Smart Contract Audit | Automated Scan Report | Manual Review + Report | Full Formal Verification & Audit |
Gas Abstraction | Basic Sponsor Tx | Paymaster Integration | Custom Gas Policies & Relayers |
Transaction Monitoring | Basic Error Logging | Real-time Alerting Dashboard | 24/7 SOC2-Compliant Monitoring |
Support & SLA | Email (48h response) | Priority Slack (24h response) | Dedicated Engineer (4h response) |
Deployment Timeline | 4-6 weeks | 8-12 weeks | Custom Roadmap |
Integration Complexity | Standard DeFi Protocols | Custom Swaps & Bridges | Full dApp Suite & Cross-Chain Messaging |
Estimated Investment | $25K - $50K | $75K - $150K | Custom Quote |
how-we-deliver
PROVEN FRAMEWORK
Our Delivery Methodology
We deliver secure, scalable cross-chain wallet integrations using a structured, milestone-driven process that ensures transparency, reduces technical debt, and accelerates your time-to-market.
01
Architecture & Protocol Audit
We conduct a deep technical review of your existing stack and target chains (EVM, Solana, Cosmos, etc.) to design a secure, gas-efficient integration blueprint. This prevents costly rework and ensures compatibility with future upgrades.
48 hrs
Initial Review
10+
Protocols Supported
02
Secure Smart Contract Development
Our engineers build and test core bridging logic, wallet connectors, and state management using audited libraries (OpenZeppelin, Wormhole SDK) and Solidity 0.8+ or Rust. Every line is written for security and audit-readiness.
100%
Code Coverage
< 2 weeks
Core Dev Sprint
03
Multi-Chain Testing & Simulation
We deploy to testnets (Sepolia, Solana Devnet) and simulate mainnet conditions, including edge cases, failed transactions, and chain reorganizations. This phase identifies and resolves issues before they impact users.
200+
Test Cases
5+
Test Networks
05
Staged Mainnet Deployment
We deploy using a phased rollout: starting with a guarded launch, moving to a multi-sig controlled upgrade, and finally transitioning to full decentralization. Each stage includes 24/7 monitoring and incident response.
3 Phases
Rollout
99.9%
Uptime SLA
06
Documentation & Handover
We deliver comprehensive technical documentation, operational runbooks, and provide knowledge transfer sessions for your team. You receive full source code ownership and are equipped to maintain and extend the system.
Full
Code Ownership
2 Sessions
Handover
security
CORE SERVICE
Smart Contract Development
Secure, production-ready smart contracts built by Web3 experts to power your protocol.
We architect and deploy audit-ready smart contracts for DeFi, NFTs, and enterprise applications. Our team delivers gas-optimized Solidity code with comprehensive testing and documentation, ensuring your core logic is secure and scalable from day one.
Reduce your time-to-market by 60% with battle-tested development frameworks and security-first patterns.
- Custom Development:
ERC-20,ERC-721,ERC-1155, and bespoke tokenomics. - Security Focus: Adherence to OpenZeppelin standards and formal verification practices.
- Full Lifecycle: From architecture and development to deployment and mainnet launch support.
Cross-Chain Wallet Integration
Frequently Asked Questions
Get clear answers on timelines, security, and process for integrating multi-chain wallets into your DeFi application.
Standard integrations for EVM and non-EVM chains (e.g., Solana, Cosmos) take 3-6 weeks from kickoff to production deployment. This includes architecture, smart contract development, UI/UX integration, and security review. Complex protocols with custom bridging logic or 5+ chains may extend to 8-10 weeks.
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