Custom Crypto Wallet Development

Ethereum and EVM-compatible chains (Polygon, BNB Chain, Avalanche, Arbitrum, Base, Optimism, Linea), Solana, NEAR Protocol, Polkadot/Substrate, Tron, Cardano, and Cosmos SDK chains. For newer or less mature chains we assess feasibility during discovery if the tooling supports production use, we'll work with it.

Yes. 4IRE operates on a full IP transfer model as a standard contractual position, not an optional add-on. Upon final payment, the client receives complete ownership of all deliverables source code, architecture documentation, smart contracts, API specifications, design assets, and any custom tooling developed during the engagement. There is no ongoing licensing fee, no revenue share tied to wallet usage, and no vendor lock-in through proprietary frameworks the client cannot independently operate or modify. ​ This is a deliberate architectural decision in how 4IRE structures client relationships. Most software vendors sell access to what they build. 4IRE transfers ownership of it. The distinction matters operationally: your legal, compliance, and technology teams retain full control over the codebase for future audits, regulatory inspections, internal modifications, or third-party developer handoffs without requiring 4IRE's involvement or approval.

4IRE is not a wallet template shop. It is an enterprise blockchain engineering and consulting firm with a track record that spans regulated green finance, institutional DeFi, consensus-layer R&D, and high-throughput exchange infrastructure. The Green Assets Wallet built on Chromia blockchain for Stockholm Green Digital Finance, backed by SEB bank, GIZ, and Swedish and German government authorities went from MVP to production standard and earned a verified Clutch review from the client's CEO: "4IRE is a transparent vendor that's great at tackling highly-technical subjects and creating practical solutions". That kind of engagement multi-stakeholder, compliance-constrained, public-institution-backed sits in a different category from standard crypto wallet development work.

Yes. We use a modular chain adapter architecture where each blockchain is a separate module you can launch on Ethereum first and extend to Solana, BNB Chain, Polygon, or other chains without a full rewrite. We currently support Ethereum, Solana, BNB Chain, Polygon, NEAR, Polkadot/Substrate, Avalanche, Tron, and all EVM-compatible chains. New L2s (Arbitrum, Base, Optimism) typically take 2–4 weeks per chain to add.

Yes. Our white-label wallet is a pre-built core with configurable branding, multi-chain support, admin panel, and API-first architecture. Deployment in 6–8 weeks vs 16–20 weeks for a fully custom build. It's the right choice if you need to get to market quickly and your requirements fit the standard feature set. During discovery we'll tell you honestly whether white-label works for your use case or whether you need a custom build.