Estate access failure — hardware wallet (2025)

Blocked

Case description

A 2025 Australian estate case involved a holder who had migrated between several wallet applications over the years—from a desktop wallet in 2014, to a mobile wallet in 2018, to a hardware wallet in 2021. The estate contained all three devices. The on-chain history showed that the most recent hardware wallet had received all funds. The executor attempted to use PINs and seed phrases found in the holder's documents but none worked for the hardware wallet. Investigation revealed the holder had used different seed phrases for each wallet generation and had documented only the 2014 and 2018 seed phrases—not the 2021 hardware wallet's seed phrase. The hardware wallet was the only relevant device, and its seed phrase remained undiscovered.

Custody context

Stress condition	Documentation absent
Custody system	Hardware wallet (single key)
Outcome	Blocked
Documentation	Unknown
Year observed	2025
Country	Australia

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

Privately Reported

Evidence type

News article

Evidence link

https://wernerlawca.com/estate-planning-for-bitcoin-inheritances-what-you-need-to-know/

Related cases involving documentation absent

193 cases involve documentation absent 274 cases involve hardware wallet (single key) 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.