Nunchuk
Bitcoin Only
Established Est. 2020
Vietnam
21Rates Quality Score: 6.2/10
Nunchuk is a privacy-focused, open-source Bitcoin multisig wallet and custody solution offering collaborative 2-of-3 vaults, inheritance planning, and hardware compatibility without KYC.
Custody Model
ModelSelf Custody
LicensesNot applicable (non-custodial, open-source)
RegulatorySelf-custody — user responsible for compliance
JurisdictionGlobal (non-custodial, no jurisdiction requirement)
Fees & Minimums
Fee StructureFree tier available. Individual: $10/mo. Premium: $20.83/mo. Honey Badger (collaborative): $40.83/mo.
WithdrawalsNone (user-controlled)
Security
Cold Storage100% cold storage (user-controlled)
InsuranceNo custodial insurance (self-custody)
Proof of Reserves No
Asset SegregationYes (user holds own keys)
Multi-Sig Supported
AuditsOpen-source code, community-reviewed
Features
API Access Not available
Mobile App Yes
Hardware Wallet Not supported
Institutional Available
Integrated Trading Yes
AssetsBTC only
Frequently Asked Questions About Nunchuk
Nunchuk's qualified custodian status is listed as "false". Confirm directly with Nunchuk about their regulatory status before entrusting assets.
Nunchuk carries the following insurance coverage: No custodial insurance (self-custody). Always confirm specific coverage terms, limits, and exclusions directly with Nunchuk before depositing assets.
Nunchuk stores 100% cold storage (user-controlled) of assets in cold storage (offline). Cold storage protects against remote hacking by keeping private keys disconnected from the internet.
Nunchuk's fee structure: Free tier available. Individual: $10/mo. Premium: $20.83/mo. Honey Badger (collaborative): $40.83/mo.. Custody fees are typically charged as an annual basis-point fee on assets under custody or a flat monthly fee.
Nunchuk does not publicly list a minimum balance. Contact them directly for requirements based on your institution type and asset size.
About this analysis
21Rates Editorial TeamBitcoin Financial Research Analysts
Our research team analyses Bitcoin custody providers using proprietary quality scoring, regulatory research, and user reviews. We independently verify custody terms and maintain up-to-date information to help you make informed decisions.
Last verified: August 2026