Cold Wallet Documentation
Establish a baseline custody record for new or reorganized offline wallets, including vault labels, access procedures, and transfer authorization notes.
Seoul · Est. 2019
Every offline transfer deserves a paper trail you can trust
Toolkit Elm Hub helps cold-wallet holders document air-gapped movements, reconcile vault ledgers, and close the gaps that spreadsheets leave behind.
Request a Ledger Review See Our Process
Recordkeeping for holders who never connect
What We DoWhen you move assets between cold storage, exchange withdrawal addresses, and multisig vaults, the chain records the transaction—but your personal ledger often does not. Missing memos, mismatched timestamps, and unsigned paper copies create reconciliation headaches months later.
We sit with you—physically in our Seocho office or through a structured remote session—to build transfer documentation that matches your actual custody setup. No dashboards. No live wallet access. Just disciplined recordkeeping aligned to how you already operate offline.
"The value is not in fancy software. It is in having someone who understands why you air-gap in the first place, and who will not ask you to plug anything in."
Consultations & Sessions
All Services
Quarterly Reconciliation Session
A recurring engagement to match new transfers against your master ledger, resolve discrepancies, and archive the quarter's records.
Transfer Ledger Review
A structured 90-minute session to audit your existing transfer records, identify gaps, and produce a reconciled ledger aligned to your custody model.
From the Journal
Read More
What a Quarterly Vault Reconciliation Actually Involves
Inside a typical 60-minute reconciliation session: what we review, what we update, and what you take home.
An Air-Gap Transfer Checklist Before You Sign
Twelve verification steps we walk clients through before any offline-to-offline or exchange-to-cold transfer.
What clients say
Full StoriesAfter three years of handwritten notes in a fireproof box, I finally had a reconciled ledger that my accountant could read. The session took longer than I expected because we had to untangle a 2022 withdrawal I had mislabeled—but that was exactly the point.— H.J. Park, multisig vault holder, Bundang
Clear instructions, no pressure to connect hardware I had deliberately kept offline. The only mild frustration was scheduling around my travel, but they accommodated a Saturday morning slot.— M. Okada, solo cold-storage practitioner, Tokyo (remote session)
Companion Ledger App
Get it from MicrosoftAvailable on the Microsoft Store
Ready to reconcile your offline records?
Describe your custody setup and we will recommend the right session format. Most engagements begin with a 90-minute ledger review.