Retrospective exercise for 21 September 2026
Why software updates belong in a custody plan
A practical research exercise assigned to the 21 September 2026 archive slot. Written and published on 15 October 2026; it does not describe a news event on the earlier date.
Published . Archive study date: .
Start with the source
Bitcoin.org explains that backups, software updates, and secure storage are separate parts of wallet safety. Read the Bitcoin.org wallet security guide before using this exercise. The source explains the general process; check its date and any product-specific instructions before acting.
Work through the decision
Record the wallet version, official download route, backup status, and a rollback question before changing software. Never install from an unsolicited message.
Write down what you know, what remains unknown, and what evidence would change the plan. Use hypothetical figures or a blank template if you are sharing the exercise with someone else.
Check the boundary
This practice note is educational. It does not establish a live market price, a guaranteed outcome, or a personal recommendation. For a real decision, verify current terms and seek qualified advice where appropriate.
Continue learning
Apply the exercise in the related section, then browse the dated archive.