Extended note: multi-wallet 2021 cleanup
A client arrived with four years of histories collapsed into one folder—two exchanges closed, one still active, and a hardware wallet used for long holds. The first full-day session only mapped transfers between self-custody addresses so disposals would not be double-counted.
The second day assigned lots for 2021 disposals using specific identification where purchase confirmations still existed. Several early airdrops remained unclassified with notes for the accountant. The packet went out with those gaps labeled rather than filled. The preparer’s follow-up focused on the airdrop treatment, not on reconstructing the transfer graph.
That pattern—transfer map first, lots second, unanswered lines left visible—is now our default for messy multi-wallet years.