Gox—coins they had retrieved just before withdrawals were suspended.

Blocked

Case description

A user who had rushed to move BTC from Mt. Gox to a new local wallet in early 2014 set a new passphrase during the stressful emergency transfer process. They later could not recall the passphrase. The wallet contained funds recently moved from Mt. Gox—coins they had retrieved just before withdrawals were suspended.

Custody context

Stress condition	Passphrase unavailable
Custody system	Mobile or software wallet
Outcome	Blocked
Documentation	Unknown
Year observed	2014
Country	Unknown

Structural dependencies observed

Single point of failure

What this illustrates

The seed phrase was there, but the passphrase that unlocked it was gone. Both are required. Access was not recoverable.

Outcome interpretation

Access was not possible under the reported conditions.

Source

Publicly Reported

Evidence type

Forum post

Evidence link

https://bitcointalk.org/index.php?topic=255793.0

Related cases involving passphrase unavailable

217 cases involve passphrase unavailable 572 cases involve mobile or software wallet View archive statistics →

This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents. Submit a case

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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.