Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01325
Institutional lockout — Coinbase (2025)
ConstrainedCase description
Bitcoin ETF custody infrastructure continued to concentrate around Coinbase Custody Trust in 2025. By mid-year, Coinbase held custody for the overwhelming majority of US spot Bitcoin ETF assets—approximately $50 billion. Some institutional investors raised concerns about custodial concentration risk: a single operational failure, regulatory action, or insolvency event at Coinbase Custody could affect a large portion of all regulated Bitcoin ETF holdings simultaneously. The concern was a structural custody dependency created by ETF issuers' preference for a single regulated custodian, creating a systemic single point of failure at the institutional level.
Custody context
| Stress condition | Vendor lockout |
| Custody system | Exchange custody |
| Outcome | Constrained |
| Documentation | Unknown |
| Year observed | 2025 |
| Country | United States |
Structural dependencies observed
What this illustrates
Getting access back required help from an institution — and that help wasn't available. Whether full access was ultimately possible is unclear, but significant delay or outside intervention was involved.
Outcome interpretation
Access remained possible, but only with delay, dependence, or significant difficulty.
Source
Publicly Reported
Evidence type
News article
Evidence link
Related cases involving vendor lockout
This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents.
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Framework references
Where Bitcoin Custody Intersects Legal and Fiduciary Authority
Where custody creates gaps in estate planning, fiduciary duty, and professional responsibility.
Professional Scope Boundary Matrix
What each professional or product covers, what they do not, and where gaps form between them.
The Independent Assessment Layer in Bitcoin Custody
How independent diagnostic layers emerge when multiple parties depend on shared infrastructure.
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