Institution-held keys
Exchange-grade and fintech custody with policy engines, withdrawal controls, and audit trails — built for regulated operators who hold assets on behalf of users.
- Policy withdrawals
- Cold / warm tiers
- Operator audit logs
Keys you can trust · UX users finish
Vault-grade wallets.
Product-ready UX.
Zupitrix designs and ships custodial, non-custodial, embedded, and MPC wallets — seed recovery, biometric unlock, Account Abstraction, and multi-chain asset views that feel as clear as any fintech app. We own threat models, key boundaries, and the product surfaces users actually finish.
- MPC & recovery
- Embedded wallets
- Account Abstraction
VaultUnlocked
Total balance$48,291.40
ETH12.4
USDC8,420
BTC0.18
SendReceiveSwap
MPC · Biometric gate
Security pillars
Three pillars of a vault-grade wallet
Custody design, MPC recovery, and biometric UX — tall columns, not shadowed cards.
Custody models
Custodial, non-custodial, or hybrid — with clear threat models, key boundaries, and ops runbooks so product and security stay aligned.
- Key ownership maps
- Hot / cold paths
- Policy gates
MPC & recovery
Threshold signing and social or institutional recovery without a single exportable seed — resilient when devices are lost or compromised.
- Key sharding
- Social recovery
- No single HSM SPOF
Biometric UX
Passkeys and device biometrics for unlock and approval — security that feels like opening a banking app, not a crypto ritual.
- WebAuthn / passkeys
- Secure enclave
- Friction-aware prompts
Vault surfaces
Hardware-backed paths. Biometric gates. Product UX that finishes.
Zupitrix designs the security plane and the screens users actually complete — secure elements, WebAuthn unlock, MPC recovery, and simulation before every send — so vault-grade controls don’t feel like a friction tax.
- Hardware-backed keysPrivate material stays in device secure enclaves, HSMs, or institutional key ceremonies — never in plain app memory or logs.
- Secure enclave / keystore binding
- HSM paths for custodial ops
- No exportable seed on device where model forbids it
- Biometric & passkey gatesUnlock and high-risk approvals run through platform biometrics and passkeys before sign or send — familiar fintech patterns, crypto-grade guarantees.
- Face ID / fingerprint unlock
- Passkeys for web & mobile
- Step-up auth on large transfers
- Vault-grade product surfacesRecovery, policy, Account Abstraction, and fee simulation are first-class UI — not buried settings — so users finish onboarding and trust every send.
- MPC / social recovery flows
- Smart accounts & sponsored gas
- Clear fees before broadcast
- Policy & audit trailsCustodial and hybrid wallets need separation of duties, spending limits, and privileged-action logs your security team can defend.
- Spending limits & allowlists
- Multi-approver send policies
- SOC 2–ready audit events
- 0
- Single points of key failure with MPC
- 4337
- AA smart accounts when gas friction kills conversion
- Step-up
- Auth on high-value or new-device sends
- Multi
- Chain context on every asset & fee line
Wallet types
Pick the custody model that fits your product
Custodial, non-custodial, embedded, or MPC — same craft, different key boundaries.
User-held seeds
Self-custody apps with verified seed backup, hardware wallet bridges, and clear signing UX — so users own keys without sacrificing clarity.
- Seed verification UX
- Hardware bridges
- Clear fee previews
Invisible keys in-product
Wallet infrastructure inside your app — email or social login, no seed screens for most users, with upgrade paths to export or self-custody when needed.
- Social / email login
- Invisible key UX
- Export when ready
Threshold key shares
Multi-party computation wallets where no single device holds a full private key — ideal for teams, institutions, and consumer apps that refuse seed risk.
- Distributed shares
- Recovery without seed
- Institutional co-sign
Capabilities
What ships inside the vault
Dense coverage across apps, MPC, recovery, AA, biometrics, and multi-chain views.
Mobile & web wallet apps with multi-chain balances
MPC threshold signing and share management
Seed phrase backup, quiz, and recovery flows
Embedded wallets with social / email onboarding
Account Abstraction smart accounts (ERC-4337)
Gas sponsorship via paymasters
Biometric unlock and passkey approvals
Session keys and spending limits
NFT and token portfolio views
Transaction simulation before send
Hardware wallet pairing (Ledger / Trezor)
Fiat on-ramp deep links and KYC handoff
Push alerts for inbound transfers
Dark / light product themes with vault UI system
Admin consoles for custodial operations
Audit logging for privileged key actions
Compliance posture
Sealed for ops, not just marketing
Amber security seals mark the controls we design into custodial and MPC programs — from key sharding to signing audit trails.
SOC 2–readyControl design for custody ops
Key shardingThreshold & split material
Secure enclaveDevice-bound secrets
Signing auditsPrivileged action trails
AA-ready4337 smart accounts
Stack & tooling
Wallet stack we put to work
Chains, connect protocols, client runtimes, and crypto tooling Zupitrix uses to ship custodial, embedded, and MPC vaults.
Chain
Ethereum
EVM smart accounts, AA paymasters, and multi-chain portfolio indexing.
Chain
Bitcoin
UTXO views, fee estimation, and secure send flows for BTC holdings.
Wallet
MetaMask
Browser and mobile connect paths for non-custodial signing UX.
Connect
WalletConnect
Session-based pairing so mobile vaults sign for web and dApps.
Client
React
Native-feeling wallet UIs for web and React Native surfaces.
Language
TypeScript
Typed signing SDKs, AA clients, and shared wallet domain models.
Crypto
RustHigh-assurance MPC share logic and cryptographic primitives.
Backend
Go
Custodial policy engines, indexer workers, and signing gateways.
Runtime
Docker
Isolated signing services and reproducible custody deployments.
Identity
Auth0
Social and email login for embedded wallets without seed screens.
Storage
IPFS
NFT metadata and off-chain asset references in portfolio views.
Chain
Solana
SPL balances, transaction simulation, and Solana signing paths.
Zupitrix role
How Zupitrix ships vault-grade wallets
Zupitrix designs and ships custodial, non-custodial, embedded, and MPC wallets end-to-end — recovery flows, Account Abstraction, biometric UX, and multi-chain asset views. We align custody threat models with product onboarding so users finish setup without sacrificing key safety.
- Map custody model, key boundaries, and regulatory posture before UI
- Build recovery, AA smart accounts, and biometric unlock into the core path
- Ship multi-chain portfolio views with clear fees and simulation before send
- Harden ops with audit trails, policy gates, and SOC 2–ready custody controls
FAQ
Questions about crypto wallets
Keep exploring
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