Cold-Storage Documentation Review
Assessment of handwritten instruction sheets, heir letters, and recovery playbooks that accompany your seed backups.
Yeongdeungpo-gu · Since 2019
Your handwritten seed backups, reconciled against the metal
Service Aspencore helps cold-storage custodians compare paper recovery phrases with stamped steel plates, laminated cards, and bound ledgers — line by line, in a private Seoul office.
Reconciliation Sessions
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Custody Record Audit
Structured review of how your seed backups are labelled, indexed, dated, and stored across locations — without opening sealed envelopes.
Handwritten Backup Reconciliation
Line-by-line comparison of your paper recovery phrases against stamped steel, laminated cards, or bound ledgers in a private, air-gapped room.
Why custodians bring us their paper
After years of storing recovery phrases in notebooks, margin columns, and photocopied binders, small transcription errors compound. A single swapped word on page three may not surface until someone attempts a restore years later.
Our reconcilers work without network connections. You retain physical custody of every artifact throughout the appointment. We read aloud, you confirm, and discrepancies are logged in a tamper-evident session report you take home.
About our practiceThey caught a duplicated line on my second backup card — the kind of mistake I would never have noticed alone. The session ran longer than quoted, but they did not rush the final pass.— H. Min, family trust custodian, Mapo-gu
Clear desk policy, no phones allowed in the room. I appreciated the matter-of-fact tone; no one tried to sell me additional storage products.— S. Park, independent cold-storage holder
From the Field Notes
All articles
Steel plate stamping mistakes we see each winter
Reversed letters, shallow impressions, and the cold-weather habit of rushing the last four words.
Organising binders before a two-pass read-aloud
Tab order, blank interleaves, and why we ask you to number pages the night before.
Offline Wallet Tracker
Our companion reference app helps custodians prepare word lists before an in-person session. It runs locally on your device and never connects to our reconciliation rooms.
Get it from MicrosoftAvailable on the Microsoft Store