Flagship course

Sealed Transfer Ledger Studio

Learn to stand up and operate an Air-Gapped Asset Ledger that survives failed media, messy vendors, and calm auditors.

Person reviewing security-related work on a laptop

Learning outcomes

  • Design intake fields that remain usable without network lookups.
  • Run a sealed transfer window with spoken hash verification and dual control.
  • Document exceptions when media fails verify — without rewriting history.
  • Close a weekly reconciliation that produces a defensible binder packet.

Informational tuition: included in Vault Circle (₩1,150,000) or Continuity Lab team pricing. See Pricing.

Available on Microsoft Store

Modules

  1. Ledger anatomy — pages, stamps, and what never belongs in pencil.
  2. Media window choreography — roles, timers, and witness language.
  3. Hash receipts & failure paths — including optical and USB edge cases.
  4. Cage and endpoint mapping — linking physical slots to ledger lines.
  5. Reconciliation theater — planted errors, timed closes, auditor Q&A.
  6. Take-home runbook rewrite — your site’s voice, our structure.
Portrait of instructor

Instructor

Yuna Choi — former plant controls engineer who spent a decade reconciling spare endpoints across air-gapped cells in Korea. Teaches with table kits, not slide monologues.

FAQ

Do I need a programming background?

No. You need patience with paperwork and willingness to practice awkward spoken verifications.

Can this replace our CMDB?

No — and that is a real limitation. This course strengthens offline truth; it does not migrate cloud inventory platforms or automate discovery.

Is content available in Korean?

Live sessions are in English with Korean examples for vendor labels and address formats. Full Korean localization is not included in the current cohort materials.

Learner notes

“Module three’s failed-verify drill was uncomfortable in the best way. We still argue less during night transfers.”

Min-jae Park · Continuity lead

Solid structure. I wanted one more template for loaner laptops that leave the cage for less than four hours.

Client in aerospace MRO
Ask about the next cohort