EXTRA WALLET

Managing assets across multiple blockchain ecosystems typically requires users to switch between wallets, security models, and network-specific tooling. At the same time, extending a wallet with new Web3 functionality can increase the attack surface when private-key operations remain tightly coupled to the main application. The project required an architecture capable of supporting EVM and non-EVM networks within a single wallet while keeping sensitive signing operations isolated and allowing new functionality to be added without redesigning the core wallet.

Designed and developed the core EXTRA WALLET platform, including multichain wallet infrastructure, an isolated signing environment, network integrations, portfolio and transaction services, modular wallet extensions, recovery and security tooling, and developer-facing infrastructure. The architecture separates key management and transaction signing from the main wallet interface while providing reusable APIs and libraries for building additional wallet functionality.

Wallet architecture, isolated signer, multichain integrations, backend infrastructure, developer SDKs and APIs, security tooling

Delivered a modular multichain wallet platform supporting 21 blockchain networks and advanced wallet workflows across EVM and native chains such as Bitcoin and Solana. The resulting infrastructure extends beyond the wallet interface itself, providing reusable APIs, HD derivation tooling, command-line utilities, modular applications, and isolated signing infrastructure for building additional Web3 products and workflows.