Unchained
Bitcoin Only
Established Est. 2016
United States
21Rates Quality Score: 59.0/10
Unchained (Austin, est. 2016) offers collaborative multisig custody and Bitcoin-backed loans without giving up key control. Has facilitated $2+ billion in BTC transactions.
Custody Model
ModelMulti-Institution Custody,Collaborative Custody
LicensesFinCEN MSB registration
RegulatoryFinCEN BSA/AML, state regulations
JurisdictionUnited States (FinCEN MSB)
Fees & Minimums
Fee StructurePersonal: $250/yr. Business: $500/yr. Concierge onboarding: $2,500 one-time. Multi-sig collaborative custody.
WithdrawalsNone (user-controlled, 2-of-3 keys)
Security
Cold Storage100% cold storage (user-controlled keys)
InsuranceCollaborative model — no single custodian risk
Proof of Reservesfalse
Asset SegregationYes (user holds 2 of 3 keys)
Multi-Sig Supported
AuditsRegular audits, proof of reserves
Features
API Access Not available
Mobile App Yes
Hardware Wallet Not supported
Institutional Available
Integrated Trading Yes
AssetsBTC only
Frequently Asked Questions About Unchained
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: July 2026