Busan · Established 2019

Your offline wallet deserves a second pair of eyes

Page Aspen Core conducts private treasury custody reviews for individuals who hold assets in cold storage, hardware wallets, and paper backups — without ever asking to see your keys.

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Confidential documents arranged on a desk for custody review
This Week

What we examine during a custody review

Seed phrase storage We walk through where your recovery words live, who knows they exist, and whether your storage method survives fire, flood, and ordinary household turnover.
Hardware wallet hygiene Firmware versions, passphrase use, spare device planning, and the gap between what you intended and what your current setup actually permits.
Successor readiness Whether a trusted person could locate instructions and act on your behalf without guessing at half-written notes in a drawer.

Review Sessions

All Sessions
Page Aspen Core 90 minutes

Successor Briefing

A guided session for your designated heir or trustee, conducted with your prior written authorisation.

Details
From the Journal

Field notes on cold storage

14 July 2025

Why metal backups fail the kitchen drawer test

Metal seed phrase plates survive fire — but placement and legibility matter more than material choice.

2 June 2025

The passphrase you never tested

A 25th-word passphrase adds security only if you can prove it works before you need it.

Read the Journal
Client Accounts

What holders say after a session

They caught that my metal backup was stored in the same location as my hardware wallet — something I had rationalised for years. The written summary gave my spouse actual steps to follow.
— H.J., hardware wallet holder since 2017, Busan
The session ran longer than scheduled because I had more gaps than expected. That honesty was useful, even if it was uncomfortable at points.
— M.R., multi-signature treasury, Seoul
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Companion reference

Available on the Microsoft Store

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