Crypto Wallet Development Solutions

Custodial means you hold users' private keys. Simpler UX, more liability. Non-custodial means users control their keys. Better security, higher support burden when users lose access. Most businesses need custodial architecture because their users aren't crypto-native and don't want that responsibility. But custodial means you're a potential target for hackers and regulators. We help you understand the trade-offs for your specific use case and risk tolerance.

Every wallet we build undergoes a third-party security audit before production deployment. This includes cryptographic implementation review, key management system audit, smart contract security testing (if applicable), and penetration testing focused on wallet-specific attack vectors. We work with established security firms that specialize in cryptocurrency systems. Generic application security testing misses wallet-specific vulnerabilities like key derivation issues, signature malleability, or improper nonce handling.

Network upgrades happen regularly, and wallet infrastructure needs to adapt. We monitor upcoming changes to supported networks, test against testnet implementations before mainnet activation, and deploy compatibility updates before hard forks. This requires ongoing development relationship, not one-time project delivery. We provide maintenance contracts that include network upgrade support so your wallet doesn't stop working when Ethereum implements EIP-4844 or Bitcoin activates a new soft fork.

Yes, but carefully. Wallet key management is separate from application authentication. Users authenticate with your existing system (email/password, OAuth, whatever you use) to access the wallet interface, but private keys are protected with additional security measures. We implement architectures where application authentication unlocks access to encrypted key material, but the encryption keys are derived from user-provided credentials or biometric authentication. This means compromising your auth system doesn't automatically expose private keys.

We build wallet infrastructure you can brand and integrate into existing products. This includes wallet-as-a-service backend infrastructure, customizable mobile and web interfaces, API endpoints for wallet functionality, and comprehensive integration documentation. The difference between our white-label offering and others is that you get actual infrastructure, not just a reskinned version of someone else's wallet. Full source code access, dedicated infrastructure, and the ability to modify functionality as your business requirements evolve.

We build wallets with common compliance features: KYC/AML integration points, transaction monitoring and flagging, geographic restrictions based on licensing, withdrawal limits and velocity checks, and comprehensive audit logging. But we're not compliance attorneys. We implement the technical infrastructure your compliance team specifies, but we don't advise on what regulatory requirements apply to your specific business model and jurisdiction. That requires actual lawyers familiar with local regulations.

Keys used during development are strictly test keys on testnet networks with no real value. Production key management systems use hardware security modules or secure enclaves where keys are generated and never leave the secure environment. Our development team never has access to production private keys. The architecture ensures that even if our entire codebase were compromised, production keys remain secure because they're generated and stored in systems we never directly access.

Supporting multiple blockchain networks in a single wallet requires chain-specific implementations behind unified interfaces. We don't just list chains - we implement proper transaction construction, signing, and broadcasting for each network's unique requirements. Bridge integration connects your wallet to cross-chain protocols, but introduces additional risk because bridges are common attack vectors. We integrate with established bridge protocols while implementing safety checks that warn users about bridge risks and transaction simulation to show expected outcomes before executing cross-chain transfers.