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If your company holds Bitcoin, custody is the single most important decision you'll make. Self-custody introduces operational risk; exchange custody means counterparty risk. Institutional custodians solve both — but choosing the right one requires understanding security models, insurance, and UK regulatory requirements.
Top UK-Available Custody Solutions
| Provider | Security Model | Insurance | Min. Assets | FCA Registered |
|---|---|---|---|---|
| Fireblocks | MPC (no single key) | Up to $150M | $1M+ | ✅ |
| Coinbase Custody | Cold storage + MPC | Up to $320M | $500K+ | ✅ |
| BitGo | Multi-sig (2-of-3) | Up to $250M | $100K+ | ✅ |
| Copper | MPC + ClearLoop | Custom | $1M+ | ✅ |
| Zodia Custody | Cold + warm storage | Custom | $500K+ | ✅ (SC Ventures) |
Security Models Explained
- MPC (Multi-Party Computation): Private key is never assembled in one place — split across multiple parties. Used by Fireblocks and Copper. Most modern approach.
- Multi-signature: Requires 2-of-3 (or 3-of-5) keys to sign a transaction. Used by BitGo. Well-tested but operationally heavier.
- Cold storage: Keys stored offline in air-gapped hardware. Used by Coinbase. Most secure but slower for withdrawals.
What to Ask Your Custodian
- 1What's your insurance coverage and who underwrites it?
- 2Are you FCA-registered under the Crypto Asset Registration regime?
- 3What's the SLA for withdrawals (how fast can I access my Bitcoin)?
- 4What happens if your company goes bankrupt — are my assets ring-fenced?
- 5What governance controls are available (multi-approver, whitelisting, time-locks)?
Critical: Never hold corporate Bitcoin on an exchange. FTX, Celsius, and BlockFi have shown that exchange deposits are unsecured creditor claims. Use a regulated custodian where your assets are legally segregated.
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Sento earns a referral if you click through our links — this never affects our recommendations. Prices and details correct at time of publication. Updated February 2026.