Documentation Setup
Establish your first audit-friendly reserve log structure, templates, and custody register from scratch.
View detailsReserve logs your auditors can read without guesswork
Service Elm Hub prepares offline wallet reserve documentation for trustees, family offices, and accounting firms who need cold-storage holdings recorded in formats that survive annual review.
What we document
Cold-storage reserves, recorded for inspection
When offline wallets hold reserves for a trust or corporate treasury, the gap between what exists on-chain and what appears in the books creates risk. We build reserve logs that tie wallet addresses, custody arrangements, verification dates, and signatory roles into a single audit trail.
Our work is delivered as bound documentation and structured spreadsheets—not software licenses. Accountants receive materials they can attach to working papers; trustees receive evidence they can present at committee meetings.
Typical clients
Family trustees, corporate treasury teams, external accountants handling digital-asset schedules
Delivery
On-site sessions in Busan, remote review for established clients, quarterly refresh cycles
Scope
Offline and air-gapped wallet inventories, seed-phrase custody notes, reconciliation memos
Turnaround
Initial documentation: 5–10 business days after intake; quarterly updates: 3 business days
Services
Documentation and review engagements
Quarterly Refresh
Update your bound reserve log after custody changes, new wallets, or quarterly committee reporting cycles.
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Reserve Log Audit
Full audit-ready reserve log review with reconciliation memos, custody chain notes, and bound documentation for your working papers.
View detailsClient evidence
What trustees say after the first review cycle
Our external accountant finally had a reserve schedule she could cross-check against the cold-wallet list without calling me three times. The bound log sits in our vault folder next to the property deeds.
— Hyeon-jin Park, trustee, Gyeongsang family estate
The quarterly refresh took longer than I hoped because we had to locate two hardware wallets that had moved offices. Once located, the update itself was straightforward.
— Min-soo Chae, corporate treasurer, shipping logistics firm
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Field notes on reserve documentation
Why Verification Dates Matter in Cold-Wallet Reserve Logs
A dated verification entry tells auditors when a balance was confirmed, not merely what it was on the day of review.
Custody Chain Notes Trustees Should Keep on Paper
Seed phrases stay off the log; custody arrangements, device serials, and signatory roles belong on paper.
Preparing Reserve Documentation Before Your Accountant's Year-End Call
Gather wallet inventories, custody notes, and book reconciliations before audit season to avoid rushed reconstructions.