last edit: 2022-12-19, Pete document status: stub
A solution that's different than Permanent Versions.
Render an HTML copy of the page, store it alongside the original (in the same directory). Use the usual slug, but append the SHA-256 hex hash truncated to 128 bits (32 hex characters) after the slug but before ".html". Share the URL with the ".html" extension. (Note if a file is named with ".html", some web hosts (e.g., Netlify) will also serve the page without needing the ".html", but for long-term safety, share with ".html".)
Add a note like this at the top of the page (before rendering, so it's included in the hash; but do not leave this message in the live version of the page):
You are reading a permanent snapshot of this page, originally shared on 2022-12-19 22:50Z at this permalink web address. If there is a newer version, it might be at Tech Note - Permanent HTML Snapshots, or you may find other versions of this page by using search on this website or elsewhere.
Leave the rendered HTML file in your repo/vault/wiki forever.
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