What it is
Each wallet or account needs three things in the file: units agreed to an independent source, fair value recomputed from a price, and evidence that the entity controls the keys.
The workbook takes units per ledger and per blockchain or confirmation, a price and source, books fair value, and the control evidence obtained, then flags unit differences, missing control evidence and valuation differences.
When to use it
- Auditing crypto holdings.
- Preparing a month-end wallet reconciliation.
- Documenting coverage of control evidence.
What’s inside
- Wallets tab with units, price, fair value and evidence
- Summary tab by custody type with coverage and ledger tie-out
- Status flags
- Legend tab
Standard cited
This template follows ASC 350-60 / AU-C 505. It is written in our own words, except for phrases the standard requires the document to contain, with [bracketed placeholders] for client details, amounts in USD and dates as MM/DD/YYYY. Check it against the current standard and your firm’s methodology before use. See AU-C 505 explained.
Questions
Does agreeing the blockchain balance prove ownership?
No. Record separate evidence of control, such as a signed message, test transfer or confirmation.
Which price is used?
The one you enter from the principal market. 350-60-35-1 requires fair value measurement each reporting period.
Related templates
- Crypto Custody and Wallet Controls Audit Program
- Digital Asset Custodian Confirmation Letter
- Crypto Lot-Level Cost Basis and Realized Gain and Loss Schedule
- Digital Asset Fair Value Rollforward (ASC 350-60)
Last updated 11/06/2026. All free templates.