We build wallet infrastructure.

Crypto wallet development is the engineering behind any software surface where users hold, move or authorize transactions of digital assets — spanning custodial, non-custodial and MPC models. Real builds also include multi-chain signing, HSM or secure-enclave key storage, hot/cold segregation, social-recovery flows, transaction simulation and operations tooling, not just a signing interface.

Cost is driven mostly by custody model, chain coverage, HSM and MPC choices, market scope and recovery model — not the client UI, which is what most teams focus on first. A single-chain non-custodial wallet is an order of magnitude lighter than a multi-chain MPC wallet with institutional controls throughout.

It depends on who holds the liability and who the product serves — custodial fits exchanges and institutional products, non-custodial fits DeFi-native audiences, and MPC is where most institutional and hybrid products have landed in 2026. MPC lets the operator carry operational control without ever holding a full key, which gives institutions the oversight they want without concentrating the risk of pure custody.

Key management, multi-chain transaction signing, hot/cold segregation for custodial products, recovery flows including social recovery, transaction simulation, phishing detection, admin and operations surfaces, and the client applications themselves. Anything legal, and the HSM hardware procurement, sit outside the engineering scope — we integrate the identity partners and specify hardware, but the filing and the purchasing are yours.

Through threat modeling before code, adversarial review during the build, and independent audit before mainnet. Custom cryptography — any custom MPC or threshold-signature code — gets at least one independent audit before touching production funds, with continuous anomaly monitoring and periodic red-team exercises after launch.

More than most teams expect, which is why you want your counsel's answer before the architecture, not after it. What they tell you drives the key management, the signing policy, the fund-segregation model and the onboarding flow — all of which are extremely expensive to change once a wallet holds real balances. Custodial products carry the heaviest requirements because you are holding someone else's money. Non-custodial wallets start lighter, though that changes the moment you add fiat on and off ramps. We do not advise on any of it. We build to what you bring us.

Both — third-party custody integration is often fastest for institutional products moving off spreadsheet custody, while custom builds make sense when you need every signing decision inspectable end-to-end, or when vendor costs at scale exceed the cost of building. We run the math with you before recommending either path.

Through social recovery mechanisms — passkeys, hardware-device attestation and trusted-contact guardians via ERC-4337 or similar account abstraction — designed so recovery feels like resetting a password, not retrieving a 24-word mnemonic. A recovery flow nobody can complete during a real panic is worse than having none at all.

Bitcoin, Ethereum, Solana, TON, Tron and the major EVM L2s at minimum, abstracted into a chain-agnostic transaction layer that still surfaces the chain-specific details that matter for security. Additional chains get added based on product need, each with its own address validation, fee model and RPC redundancy built in.

Your own wallet earns its place when the key experience is part of what makes the product good. Custom recovery, specific signing policy, deep protocol integration, an onboarding flow that hides the seed phrase entirely — those need building. Where a standard connect-and-sign flow serves your users well, an embedded provider gets you shipping far sooner. Plenty of products start embedded and build their own once the wallet becomes central. We scope against what your users actually need from key management.