Cheongju · Since 2019

Paper and steel backups deserve a written custody record

We visit homes and offices across Chungcheongbuk-do to photograph seals, note storage conditions, and produce tamper-evident logbooks that track every movement of your offline wallet materials.

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Handwritten ledger beside sealed envelope in a desk drawer
A completed custody page from a steel-plate backup audit in Sangdang-gu, March 2025.

Seal condition

We record serial numbers, wax impressions, and tamper-evident tape states before anything moves. Each entry is dated and initialed in your bound log.

Environmental notes

Humidity readings, drawer placement, and proximity to heat sources are written down. Paper backups fade differently from engraved steel—we note both.

Movement history

When a backup shifts from a safe to a bank box, we add a chain-of-custody line. No digital sync—just ink, witness initials, and photographs.

Home

Recurring visit

Quarterly Log Refresh

Scheduled return visits to add dated entries, replace worn tamper-evident tape, and update environmental readings for ongoing custody documentation.

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Home

Short visit

Seal Verification Session

A focused 45-minute visit to witness intact seals, update your existing custody log, and apply fresh tamper-evident tape when legitimate access has occurred.

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Companion reference

Available on the Microsoft Store

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They photographed every corner of my fireproof box before re-sealing it. The log now shows three relocation entries—I wish I had called them before moving to Jeonju last year.
— H.K., steel plate backup, Heungdeok-gu
The handwritten pages feel old-fashioned, which is exactly what I wanted. One minor note: the initial visit ran twenty minutes longer than quoted because my paper cards were in two separate envelopes.
— S.M., laminated seed cards, Osong

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