Their GitHub archive from that period was incomplete.

Blocked

Case description

A programmer's wallet passphrase was the hash of a function they had written in 2013. By 2021 they could not recall which function they had hashed or the exact version of the code at the time. Their GitHub archive from that period was incomplete.

Custody context

Stress condition	Passphrase unavailable
Custody system	Mobile or software wallet
Outcome	Blocked
Documentation	Unknown
Year observed	2021
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.