bitnuk Contact Us
Zug, Switzerland · B2B software & consulting

Swiss-engineered. Digital-asset infrastructure.

Bitnuk builds, integrates and advises on wallet, custody-tooling and tokenisation software for fintechs, banks and Web3 businesses. Delivered to your stack — you operate the infrastructure and control the keys. Production-proven engineering, not slideware.

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0x4f7c…a2c9 signed 2-of-3 vault → hot · policy ok block 852,301 appended

Why Bitnuk

We ran these systems in production.

Security-first engineering

Signing policies, quorums and air-gapped ceremonies designed in from day one — not retrofitted.

Provider-agnostic

Fireblocks, BitGo or self-hosted — we integrate whatever fits your risk model, not a preferred vendor.

Compliance-aware by design

Screening hooks, travel-rule readiness and audit-ready logging woven into every delivery.

Proven in production

A decade of group fintech engineering behind live fiat and on-chain rails, in one operational stack.

Software solutions

Built for your stack.

Every solution is software you run. Your infrastructure, your keys, your funds — Bitnuk never holds client assets.

Hot wallet solutions

High-availability transactional wallets delivered to your environment. You operate the stack and control the keys.

  • Policy engines & velocity limits
  • Withdrawal queues
  • Signing workflows
  • Client-controlled keys & funds

Non-custodial wallet solutions

End-user self-custody wallets for mobile and web, with key management UX your users can actually follow.

  • Seed & key-management UX
  • Recovery flows
  • Mobile & web clients

Third-party custody integrations

Connect your platform to institutional custody and MPC providers such as Fireblocks and BitGo.

  • Vault orchestration & policy mapping
  • Webhook & event pipelines
  • Reconciliation

Vault & multisig solutions

Cold and warm storage with M-of-N signing — architectures your team runs and audits.

  • Air-gapped signing ceremonies
  • M-of-N quorum policies
  • Approval workflows & hardware signers
  • Tiered vault ↔ hot liquidity

Tokenisation

Issuance and lifecycle management for asset, loyalty and stablecoin-style tokens.

  • Smart-contract development
  • Issuance & lifecycle tooling
  • Redemption flows

Exchange integrations

Connectivity to exchanges and liquidity venues, plus white-label front-ends.

  • Order routing & balance sync
  • Trade reconciliation
  • White-label exchange UI

The custody spectrum

One partner, every layer.

From air-gapped cold storage to exchange connectivity — Bitnuk designs, builds and integrates every layer. Always as software you operate.

COLD VAULT air-gapped ceremonies
MULTISIG M-of-N quorums
MPC / THIRD-PARTY Fireblocks · BitGo
HOT WALLET policy engines · queues
EXCHANGE routing · liquidity
0x91be…77f0 → 0x4f7c…a2c9 confirmed · block 852,302 quorum 3/5 · policy pass

Custody & MPC providers

FIREBLOCKS BITGO SELF-HOSTED

Plus connectivity to major exchanges and liquidity venues.

Chains & assets supported

ADA AVAX BTC DOT ETH POL SOL TRX USDC USDT XRP + OTHERS

Named products are supported integration targets. No partnership or endorsement is implied.

Consulting

Advice from operators.

Not slideware. Architecture decisions, provider selections and signing-policy designs grounded in operating real digital-asset infrastructure.

ASSESSDESIGNBUILDOPERATE
01

Architecture & provider selection

Architecture reviews and structured selection across custody, MPC and screening providers — matched to your risk model and roadmap.

02

Key management & signing policy

Key-management design, quorum and signing-policy definition, and ceremony procedures your auditors can follow.

03

Migration & compliance-aware engineering

Migration between custody providers, transaction-screening hooks, travel-rule readiness and audit-ready logging.

Contact

Tell us what you're building.

Integration project, wallet build or a second opinion on your custody architecture — we'll come back with engineering questions, not a sales deck.

response < 2 business days · Zug, Switzerland