Blockchain & Web3
Blockchain Solutions Built for Security and Scale
We build production-grade blockchain applications — from smart contracts and DeFi protocols to digital wallets and tokenization platforms. Security-first engineering with deep audit expertise.
Capabilities
What We Build
Smart Contract Development
Solidity and Rust smart contracts for Ethereum, Polygon, RSK, and other EVM-compatible chains. Gas-optimized, audited, and production-ready. We implement upgradeable proxy patterns (UUPS, Transparent Proxy) for long-lived contracts and use comprehensive test suites with 100% branch coverage. Our contracts have processed millions in transaction volume without a single exploit.
Digital Wallets & DApps
Non-custodial wallets, DeFi interfaces, and decentralized applications with intuitive UX that reach millions of users worldwide. We built the Xcapit wallet used by 4M+ people across 167+ countries through the UNICEF Innovation Fund. Our DApp frontends integrate seamlessly with MetaMask, WalletConnect, and hardware wallets, with real-time transaction monitoring and gas estimation.
Tokenization Platforms
Asset tokenization for real estate, carbon credits, and financial instruments. Compliant token design with proper legal frameworks. We work with Stellar/Soroban for high-throughput tokenization scenarios and ERC-20/ERC-721/ERC-1155 standards on EVM chains. Our tokenization platforms include KYC/AML integration, investor dashboards, and secondary market trading capabilities.
DeFi Protocol Development
Lending protocols, DEX integrations, yield strategies, and liquidity management built with security best practices and formal verification. We develop custom AMM curves, flash loan protections, and oracle integrations with Chainlink and Pyth. Our DeFi protocols include time-locked governance, emergency pause mechanisms, and comprehensive economic modeling before mainnet deployment.
Security Audits & Formal Verification
Rigorous smart contract auditing using Slither, Mythril, and manual code review to identify vulnerabilities before deployment. We perform gas optimization analysis, verify upgrade patterns for proxy contracts, and implement multi-sig governance for critical operations. Every contract undergoes a multi-phase audit process: automated static analysis, manual expert review, and economic attack simulation.
FAQ
Frequently Asked Questions
More Case Studies
UNICEF Innovation Fund
UNICEF Digital Wallet: Financial Inclusion for 4M+ People
How Xcapit built a blockchain-based digital wallet that reached 4M+ people across 167+ countries as part of the UNICEF Innovation Fund — recognized as a Digital Public Good by the DPGA.
4M+
People reached
167+
Countries
EPEC & Gobierno de Córdoba
Renewable Energy Tokenization for EPEC & the Government of Córdoba
How we designed and implemented a three-token system for distributed and community energy tokenization, integrating Renewable Energy Certificates (RECs) on blockchain with the Government of the Province of Córdoba, Argentina.
3
Custom tokens
450+
Homes powered
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