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Wallet Development and Integration

Wallet Development and Integration

The right wallet answer is often integration rather than a build, because building one means owning key management, recovery, device compatibility and a permanent security obligation. LimeChain starts from custody, signing policy and recovery, then recommends custodial, non-custodial, MPC, smart account or embedded models. Past work includes Hedera MultiSig and the wallet and DeFi surface of the Shibhub consumer app.

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How it works

Every engagement runs the same sequence, starting from custody and recovery rather than from the interface.

  1. 1

    Map users, assets and custody

    Transaction journeys, custody model, signing policy, recovery, devices, compliance needs and who operates it.

  2. 2

    Decide build versus integrate

    Custodial, non-custodial, smart account, MPC, HSM-backed, embedded and third-party options compared on risk, differentiation and time to market.

  3. 3

    Design security and experience together

    Key generation and storage, signing and policy controls, recovery, permissions, transaction simulation and provider dependencies.

  4. 4

    Prototype the hard journeys

    Onboarding, connection, signing, approval, failure and recovery flows, plus a vertical slice through the hardest provider interaction.

  5. 5

    Build with senior ownership of key logic

    Micro-sprints and weekly demos, with senior wallet and security engineers owning all key and signing paths.

  6. 6

    Roll out under limits

    Internal testing, testnets or sandbox providers, limited user cohorts, then production with monitoring, support and incident procedures ready.

Frequently asked questions

Should we build a wallet or integrate an existing one?
Integrate unless the wallet is your differentiator. Building one means owning key management, recovery, device compatibility, chain support and a permanent security obligation. Integration is faster and shifts much of that burden to a specialist provider. LimeChain recommends building only where the custody model, compliance requirements or user experience genuinely cannot be met by an existing provider, and says so before the build is scoped.
What wallet work has LimeChain done?
LimeChain built Hedera MultiSig, a multi-signature wallet creation and transaction tool for the Hedera network, and designed and built Shibhub, a consumer app combining wallet, DeFi and app access. Wallet and signing flows are also part of most onchain app engagements, including work on Status, which combined messaging, an Ethereum wallet and app discovery in one product.
What is the difference between MPC, smart accounts and traditional key storage?
Traditional wallets hold a single private key, making the key a single point of failure. MPC splits key material across parties so no single party can sign alone, which enables policy enforcement and reduces single-point compromise. Smart accounts move the logic onchain, enabling social recovery, spending limits, session keys and gas sponsorship. LimeChain chooses between them based on your custody, recovery and compliance requirements.
How do you design account recovery?
Recovery is designed before the wallet is built, because it determines the custody model. LimeChain works through what happens when a device is lost, a seed phrase is forgotten, a guardian is unavailable or a user is compromised, then chooses a mechanism such as social recovery, guardian sets, MPC share reconstruction, custodial reset or hardware backup. Recovery flows are prototyped and tested, since they are used exactly when the user is least calm.
Can the wallet enforce transaction policies and approvals?
Yes. Policy enforcement covers spending limits, allowlists and blocklists, multi-party approval above a threshold, time delays on high-value transfers, contract interaction restrictions, and simulation of a transaction's effects before signing. Whether enforcement sits in an MPC policy engine, a smart account or a backend service depends on the custody model, and that is decided in the security architecture phase.
Which chains and platforms can you support?
EVM chains, Solana, Hedera, Bitcoin and other major networks alongside the specific chains your product requires, across browser extension, web, iOS, Android and embedded contexts. The supported matrix is agreed at scoping and tested against real devices, browsers and providers, because wallet compatibility problems appear on the long tail of devices rather than in the primary test environment.
Do you handle security testing for wallets?
Yes. Wallet quality gates cover device and browser matrices, chain and provider compatibility, transaction and policy tests, recovery cases, performance, accessibility, privacy and operational drills, with penetration testing added according to the custody model and value at risk. Where a wallet holds client assets directly, LimeChain coordinates independent security review rather than relying on internal testing alone.
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