The user ran the card through a paper shredder while clearing their desk, not realising

Blocked

Case description

A user's seed phrase was written on the back of a business card. In October 2020 the user ran the card through a paper shredder while clearing their desk, not realising which card it was among a stack of identical-looking cards. None of the shredded pieces were distinguishable as the seed card.

Custody context

Stress condition	Seed phrase unavailable
Custody system	Hardware wallet (single key)
Outcome	Blocked
Documentation	Unknown
Year observed	2020
Country	Unknown

Structural dependencies observed

Single point of failure

What this illustrates

There was only one way in. When that path was gone, so was access. 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 seed phrase unavailable

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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.