#PoisonBookProject
Live, measured metrics for the hashtag #PoisonBookProject from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #poisonbookproject
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-08-03 05:36 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-08-03 05:36 UTCNo related tags with measured usage found for #poisonbookproject.
Live pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-08-03 05:36 UTCEverything below is measured over the latest 3 public posts (spanning ~16508 hours).
Posting hours (UTC)
Languages: English (3)
Avg boosts / post: 0.3
Top of the latest posts
TIL about the Poison Book Project It doesn't surprise me though. Emerald green, also known as Schweinfurter, Paris, or Vienna green, is highly toxic due to its chemical makeup: Cu(C₂H₃O₂)₂·3Cu(AsO₂)₂ - copper (II) acetate triarsenite Invent
The Paris institution identified the offending copies after US researchers discovered publishers in the #VictorianEra had used the chemical (arsenic) to colour #BookBindings. The arsenic-containing green pigments were called Paris green, em
@dzshuniper FWIW here is the other poison book project page: http://wiki.winterthur.org/wiki/Poison_Book_Project Interesting stuff, I knew about the problems in wallpaper but I had never considered books! #PoisonBookProject #BiblioToxicolog
#poisonbookproject across platforms
every network with a public tag surfaceFollow #poisonbookproject straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/poisonbookproject