HD Wallet Architecture
BIP-32/39/44 compliant hierarchical deterministic wallets that derive unlimited addresses from a single 12 or 24-word seed phrase. Supports account-level and address-level derivation paths for all major networks.
BLOCKCHAIN & WEB3
Crypto Wallets Built for Security
We build production-grade custodial and non-custodial wallets — from HD key management and multi-chain support to hardware wallet integration and DeFi connectivity — trusted by 1M+ users across 15+ wallets.
15+
Wallets Built
1M+
Active Users
Multi-Chain
Support
Fixed scope, fixed price
A number before we write code
Your IP from day one
Full ownership on final payment
Senior engineers only
No juniors on your budget
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Our Capabilities
Multi-Chain Support
Unified wallet experience across Ethereum, Solana, Bitcoin, Polygon, Arbitrum, Optimism, Avalanche, Cosmos, and more. Automatic chain detection, network switching, and cross-chain asset aggregation.
Hardware Wallet Integration
Native support for Ledger and Trezor hardware wallets via HID and WebUSB. Users can sign transactions with maximum security without exposing private keys to software, even for complex DeFi operations.
WalletConnect Protocol
WalletConnect v2 integration for seamless dApp connections via QR code or deep link. Your wallet becomes interoperable with the entire Web3 ecosystem of thousands of dApps out of the box.
Transaction Signing & Security
Secure transaction parsing with human-readable simulation (show users exactly what a transaction will do before signing), phishing detection, malicious contract warnings, and spending limit approvals.
DeFi & NFT Integration
Built-in DeFi portfolio tracking, token swapping via DEX aggregators (1inch, Paraswap), NFT gallery and transfer, staking interfaces, and yield opportunity discovery directly inside the wallet.
How we work
Fixed milestones, working software every fortnight, and no surprises on the invoice.
- 01
Security Architecture
We design the security model first: key derivation scheme, storage encryption strategy (AES-256, Secure Enclave on iOS/Android), biometric authentication, and threat model for seed phrase protection.
- 02
Key Management Design
Implementation of BIP standards for HD key derivation, secure key storage using platform secure storage (iOS Keychain, Android Keystore), and optional MPC (Multi-Party Computation) for enhanced security.
- 03
Development
Wallet application development — transaction construction and signing for each chain, RPC node integration, token balance fetching, NFT discovery, and UI/UX for a frictionless user experience.
- 04
Penetration Testing
Comprehensive security audit including static analysis, dynamic testing, memory inspection for key material exposure, and attempted private key extraction. Third-party pen test before public release.
Work we have shipped
Accountable partners, not outsourced vendors
How we price, who we staff and what happens after launch — the parts that decide whether a project actually lands.
Fixed scope, fixed price
You know the cost and the timeline before a line of code is written. No hourly billing, no scope-creep surprises.
You own everything
Full source code, credentials and intellectual property transfer to you on final payment. We sign the IP assignment on day one.
Senior engineers only
Every project is staffed by engineers with years of production experience — no juniors learning on your budget.
Canadian data residency
Built for PIPEDA and provincial privacy law, with data kept on Canadian infrastructure where it matters.
8-week MVP programme
A focused, fixed-price path from idea to a launched product, refined across dozens of startup engagements.
Support after launch
Tiered SLAs from monitoring and bug fixes to a dedicated team with 24/7 response. Most clients stay for years.
Recognition
Independent awards and partner tiers, each one earned on delivered work.
Top Generative AI Company
Top App Development Company
Webby Honoree
Best App Award, Personal Growth
Advanced Tier Services Partner
Top 100 North America
Compliance
Regulation is a design constraint here, accounted for from the first architectural decision rather than audited in at the end.
Privacy
Personal data handled to the letter of Canadian and international law.
PIPEDAGDPRHIPAACCPA
Security
Threat modelling, least-privilege access and audited controls.
SOC 2 Type IIISO 27001Zero trust
AI governance
Model evaluation, human oversight and an audit trail.
ISO 42001AIDA-readyModel cards
Sector
The regulations your industry answers to, designed in from day one.
PCI DSSHL7 / FHIROSFI
Cloud
Regional residency, encryption in transit and at rest, tenant isolation.
Canadian data residencyAWS Well-Architected
Accessibility
Built and tested so the people who need it can actually use it.
WCAG 2.2 AAAODA
Common questions
If your question is not here, a senior engineer will answer it within one working day.
Ask our teamCustodial wallets (you hold private keys on behalf of users) offer simpler UX and easier account recovery — users log in with email/password and never see a seed phrase. This is ideal for consumer apps targeting crypto beginners. Non-custodial wallets give users full control of their keys — better for crypto-native users, DeFi power users, and applications where trust in the operator is low. We help you choose based on your user persona and risk tolerance, or design a hybrid with MPC.
Keys are never stored in plaintext. We use platform-provided secure storage: iOS Keychain with Secure Enclave for biometric-gated key access, and Android Keystore with hardware-backed key material where available. On web, keys are encrypted with a user-derived password using PBKDF2 and stored in encrypted IndexedDB. We also implement key derivation on separate threads to minimize attack surface, and never log or transmit key material.
We recommend launching with your primary target chains first, then expanding. Ethereum + EVM chains (Polygon, Arbitrum, Base) give the broadest DeFi coverage. Adding Solana captures the largest non-EVM ecosystem. Bitcoin is essential for a general-purpose wallet. We architect wallets with chain-agnostic core logic so adding new chains requires minimal effort — typically 1–3 days per additional EVM chain and 1–2 weeks for non-EVM chains.
DeFi integration typically uses a combination of: direct smart contract calls via ethers.js or viem for on-chain interactions, DEX aggregator APIs (1inch, 0x) for swap routing, DeFi data APIs (DeBank, Zapper) for portfolio and yield data, and The Graph subgraphs for protocol-specific data. We design a modular integration layer so new DeFi protocols can be added without core wallet changes.
Both have distinct use cases. Browser extensions (like MetaMask) are preferred by DeFi power users for desktop dApp interactions — they inject a Web3 provider that dApps can access directly. Mobile wallets reach a broader audience, use WalletConnect for dApp connections, and can leverage biometrics and push notifications. Many mature wallets offer both. We recommend starting with your primary user's device preference — mobile for consumer apps, extension for DeFi-focused wallets — and expanding to the other platform in a subsequent phase.
Let’s build something worth keeping.
Tell us what you are trying to build. A senior engineer will come back within one working day with a scope, a timeline and a fixed price.