Komainu
Qualified CustodianKomainu is a joint venture between Nomura (Japan's largest investment bank), Ledger, and CoinShares. Combines Nomura's institutional expertise, Ledger's hardware security, and CoinShares' crypto knowledge.
Quick Verdict
With a Custody Score of 7/10, Komainu is ranked #9 of 11 among qualified custodian providers. Its strongest category is Security and its weakest is Counterparty Diversification.
Analysis
Score Breakdown
The Custody Score is a weighted average across 8 criteria, each rated 1-10.
| Criterion | Score | Weight | Weighted |
|---|---|---|---|
| Security | 8.5 | 20% | 1.70 |
| Insurance | 7 | 15% | 1.05 |
| Regulatory | 8 | 15% | 1.20 |
| Fee Transparency | 4.5 | 10% | 0.45 |
| Track Record | 6.5 | 15% | 0.98 |
| Withdrawal Flexibility | 6.5 | 10% | 0.65 |
| Reporting & Audit | 7.5 | 10% | 0.75 |
| Counterparty Diversification | 3.5 | 5% | 0.18 |
| Total | 100% | 7 |
Key Features
- ✓Nomura-backed
- ✓Ledger Vault technology
- ✓CoinShares crypto expertise
- ✓Asia/Europe institutional focus
- ✓Bank-grade compliance
- ✓Governance frameworks
Fee Breakdown
| Setup Fee | Custom |
| Annual Custody Fee | Custom |
| Transaction Fee | Custom |
| Withdrawal Fee | Network fees |
| Notes | Nomura + Ledger + CoinShares joint venture. |
Security Details
Key Management
Ledger Vault enterprise custody
Cold Storage
Majority cold
SOC Compliance
SOC 2
Penetration Testing
Yes
Incident History: No incidents
Insurance Coverage
Coverage
Institutional coverage
Carrier
Via Nomura/partners
Details
Backed by Nomura — Japan's largest investment bank.
Regulatory Status
Licenses
- JFSC registered (Jersey)
Regulated in Jersey. Nomura provides institutional credibility.
Pros & Cons
Pros
- Nomura backing — tier-1 investment bank
- Ledger's proven hardware security
- CoinShares' crypto market expertise
- Strong Asia/Europe presence
- JV model diversifies expertise
Cons
- Limited public information
- Institutional only — very high minimums
- Completely opaque pricing
- Newer operation
- Dependent on three parent companies aligning
How Komainu Compares
Top qualified custodian providers ranked by Custody Score.
| Provider | Custody Score | Compare |
|---|---|---|
| Fidelity Digital Assets | 8.4 | Compare → |
| BitGo | 8.2 | Compare → |
| Coinbase Custody | 8.2 | Compare → |
| Anchorage Digital | 7.9 | Compare → |
| Gemini Custody | 7.7 | Compare → |