February 1, 2026
Paper Backup Notes and Assembly Evidence Standards
How handwritten records support or complicate reference logs
Paper backup notes remain common among long-term cold wallet holders. Some notes are excellent assembly evidence. Others create more ambiguity than they resolve. Understanding the difference saves revision rounds.
What analysts need from paper notes
A usable paper note photograph shows the handwritten content clearly and includes any date annotation the writer added at the time of the transfer — not a date added later during tax preparation. Context matters: “moved to new Ledger” is more useful than “transfer” without indicating source and destination wallets.
Photograph the full page, not a cropped section. Cropped images prevent analysts from verifying whether notes belong to the same wallet inventory you declared during intake.
Date precision expectations
Handwritten dates rarely match block timestamps exactly. Assembly treats paper dates as approximate anchors. Analysts match notes to on-chain confirmations within a reasonable window and document the match confidence in the ambiguity appendix.
Notes without dates can still support assembly when address fragments or amounts uniquely identify a transaction. Notes with only vague timing (“sometime in 2019”) require broader tracing and may remain partially unresolved.
Combining paper with device exports
The strongest evidence pairs paper notes with corresponding device exports from the same period. When a paper note describes a migration and the old device export confirms the outgoing transaction, assembly proceeds quickly.
When paper notes describe activity that no device export corroborates, analysts rely on on-chain tracing alone. This works for simple transfers but struggles with internal address derivation patterns across older wallet software versions.
Storage recommendations for holders
Keep paper notes in a single physical location and photograph them once per tax season before assembly intake. Digital copies stored alongside exports prevent loss if originals are misplaced during filing stress.
Do not annotate original paper notes with tax-category labels during assembly — those labels belong in the reference log, not on source evidence. Additional ink on originals creates questions about when annotations were added.
When paper is insufficient alone
Assembly cannot proceed from paper notes alone when amounts, addresses, and dates are all missing. In those cases, holders must supplement with any available device export or accept that certain transactions will appear only as traced on-chain entries without paper corroboration.
Contact us if your evidence mix includes substantial paper records — intake scope estimates account for transcription time.