Nunchuk
Collaborative CustodyNunchuk is a collaborative Bitcoin multisig wallet supporting multiple key holders. Features inheritance planning, Taproot support, and flexible multisig configurations. Designed for families and teams managing Bitcoin together.
Quick Verdict
With a Custody Score of 5.9/10, Nunchuk is ranked #3 of 3 among collaborative custody providers. Its strongest category is Withdrawal Flexibility and its weakest is Insurance.
Analysis
Score Breakdown
The Custody Score is a weighted average across 8 criteria, each rated 1-10.
| Criterion | Score | Weight | Weighted |
|---|---|---|---|
| Security | 8 | 20% | 1.60 |
| Insurance | 2 | 15% | 0.30 |
| Regulatory | 3 | 15% | 0.45 |
| Fee Transparency | 9 | 10% | 0.90 |
| Track Record | 6.5 | 15% | 0.98 |
| Withdrawal Flexibility | 9.5 | 10% | 0.95 |
| Reporting & Audit | 4 | 10% | 0.40 |
| Counterparty Diversification | 7 | 5% | 0.35 |
| Total | 100% | 5.9 |
Key Features
- ✓Collaborative multisig
- ✓Inheritance planning
- ✓Taproot support
- ✓Flexible key configurations
- ✓Team-based key management
- ✓Hardware wallet integration
Fee Breakdown
| Setup Fee | Free (basic) / $14.99/month (Premium) / Custom (Business) |
| Annual Custody Fee | See setup (subscription model) |
| Transaction Fee | No transaction fees |
| Withdrawal Fee | Network fees only |
| Notes | Premium includes server-assisted keys and inheritance planning. |
Security Details
Key Management
Collaborative multisig wallet
Cold Storage
100% (hardware wallets)
SOC Compliance
N/A
Penetration Testing
Yes
Incident History: No incidents
Insurance Coverage
Coverage
Limited — collaborative custody model
Carrier
N/A
Details
Users hold their own keys. Nunchuk assists but doesn't insure.
Regulatory Status
Licenses
- N/A
Canadian company. Not a custodian — provides wallet software.
Pros & Cons
Pros
- Excellent multisig UX — genuinely easy
- Flexible key configurations
- Inheritance planning built-in
- Taproot multisig support
- Team-based wallet management
Cons
- Bitcoin only
- Newer company
- Not a custodian — software only
- Premium features require subscription
- Smaller community than Unchained/Casa