What is Swiss Deep-Cold Storage?
Deep-cold storage is the highest standard of digital asset security, where private keys are generated and stored entirely offline — never connected to the internet, network, or any electronic device that has ever been online. Combined with Swiss banking regulations, it represents the most trusted custody model for institutional investors.
CriptoBanc's deep-cold storage infrastructure is built to Swiss banking-grade specifications: military-grade vaults, geographically dispersed sites, multi-signature governance, and full insurance coverage. Your assets remain segregated and bankruptcy-remote, accessible only through audited, multi-party protocols.
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Why CriptoBanc Deep-Cold Storage?
🏔️ Geographically Distributed
Assets stored across multiple nuclear-blast-rated bunkers in Swiss Alps and urban data centres — maximum resilience.
🔐 Air-Gapped Infrastructure
Private keys generated in Class-3 clean rooms, stored on hardware security modules (HSMs) that have never touched the internet.
🏦 FINMA-Regulated
Custody operations supervised by Swiss Financial Market Supervisory Authority, compliant with Swiss banking standards.
🛡️ Full Insurance Coverage
Up to $500M in institutional insurance from Lloyd's of London and leading Swiss insurers — covering theft, physical loss, and cyber events.
🔑 Multi-Party Computation (MPC)
Advanced threshold signing schemes ensure no single party can move assets — requiring approval from multiple authorised signers.
📊 Real-Time Audit Trail
Every custody event is timestamped, cryptographically sealed, and available for independent audit 24/7 via secure portal.
How CriptoBanc Deep-Cold Storage Works
Onboarding & Key Generation
Client completes institutional KYC/AML. CriptoBanc generates segregated public/private key pairs inside an air-gapped, certified HSM.
Asset Deposit & Segregation
Digital assets are deposited to the dedicated public wallet. Keys are stored offline in geographically separate vaults.
Withdrawal & Governance
Client initiates withdrawal via secure portal. Multi-signature approval (minimum 2 of 3 signers) is required. Assets are signed offline and broadcast.
Insurance & Regulatory Framework
CriptoBanc's custody insurance provides comprehensive coverage for digital assets held in deep-cold storage. Policies are underwritten by A+ rated global insurers, covering:
- ✅ Third-party theft (physical or digital breaches)
- ✅ Insider collusion and fraud
- ✅ Physical loss or damage to key storage media
- ✅ Transfer errors (subject to operational controls)
All custody operations are audited annually by Big-4 firms and reported to FINMA. Client assets are held in bankruptcy-remote legal structures, fully segregated from corporate assets.
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Technical Specifications
HSM Certification
FIPS 140-3 Level 3 certified hardware security modules (HSMs) from industry leaders (Ledger, Sealsq, Utimaco).
Key Storage
Shamir Secret Sharing (5-of-9) with backups held in independent Swiss vaults. No single point of failure.
Network Isolation
Air-gapped signing enclaves with one-way data diodes. Signing requests are physically transported via secure courier or military-grade fibre.
Supported Assets
BTC, ETH, SOL, ADA, DOT, XRP, LTC, major stablecoins, and 100+ ERC-20 tokens. Custom assets supported upon request.
Audit & Reporting
Programmable proof-of-reserve reports, real-time balance APIs, and integration with leading treasury management platforms.
Disaster Recovery
Geographically mirrored locations with independent power, cooling, and connectivity. Recovery time < 24 hours.
Trusted by the World's Largest Institutions
CriptoBanc's deep-cold storage solutions are used by central banks, sovereign wealth funds, and the world's largest asset managers. With over $15B in assets under custody and 0 security breaches since inception, we set the standard for institutional crypto custody.
Assets Under Custody
Security Uptime
Supported Networks
Audit & Monitoring
Frequently Asked Questions
How is deep-cold storage different from standard cold storage?
Deep-cold storage ensures that private keys never touch any internet-connected device — ever. Standard cold storage may involve temporary connections. Our process uses air-gapped HSMs and manual signing ceremonies.
Are my assets insured?
Yes. All assets in deep-cold storage are covered by institutional insurance policies from A+ rated insurers, with total capacity exceeding $500M.
Can I withdraw assets instantly?
Withdrawals require multi-party approval and are typically processed within 2-4 hours during business hours (24/7 for emergency requests).
What is the minimum custody amount?
Minimum varies by asset type but typically $1M EUR for institutional accounts. For smaller holdings, we offer shared custody tiers.