Allocation Sheet Workshop
A half-day group session teaching holders how to build and maintain their own side-by-side allocation sheets at home.
Learn moreDesktop Havenfield prepares side-by-side allocation sheets that document Bitcoin, Ethereum, and other network addresses held in offline wallets. Each sheet pairs live balances with your paper backup records so you can verify holdings without connecting devices to the internet.
Flagship service
For holders who keep assets across several blockchains in air-gapped or hardware wallets, we produce a paired allocation sheet: one column lists each address and its recorded balance, the other mirrors your offline seed phrase index and derivation path notes. The audit takes place in our Daegu office with your devices kept offline throughout.
Typical scope covers up to eight networks and twelve address groups. You receive a printed master sheet, a sealed duplicate for your safe, and a reconciliation summary noting any gaps between on-chain data and your handwritten records.
Full service detailsFurther offerings
A half-day group session teaching holders how to build and maintain their own side-by-side allocation sheets at home.
Learn moreComplete paper backup kit with labelled allocation templates, seed index forms, and derivation path guides for up to four devices.
Learn moreA paired side-by-side sheet documenting on-chain balances against your offline seed index across up to eight networks.
Learn moreFrom the journal
10 February 10106
Spreadsheets require a computer. Allocation sheets sit in your safe beside your seed phrases.
22 January 22226
A consistent notation system for BIP39 seeds across Ledger, Trezor, and Coldcard devices.
5 January 5056
Why your master sheet and sealed duplicate should never share a shelf with your seed phrases.
Available on the Microsoft Store
Client accounts
After years of adding addresses across three hardware wallets, I had no single view of where everything sat. The side-by-side sheet showed that two Ethereum addresses I thought were separate actually shared a derivation path on Seed B. That alone saved me from duplicating a backup I did not need.
— Min-jun K., audited March 2026, eight networks
The printed sheets are clear and the reconciliation notes flagged a small discrepancy on one Solana address. It turned out to be a rounding difference in my handwritten log, not a missing asset. I appreciated that the report did not oversell the findings.
— Sarah L., family trust documentation, February 2026