#altcha
Live, measured metrics for the hashtag #altcha from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #altcha
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.online (Mastodon public tags API) · fetched 2026-11-06 07:25 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.online (Mastodon public search API) · fetched 2026-11-06 07:25 UTCLive pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-11-06 07:25 UTCEverything below is measured over the latest 31 public posts (spanning ~22018 hours).
Posting hours (UTC) — busiest: 12:00
Languages: English (16) · French (7) · German (4) · Polish (3) · Spanish (1)
Avg boosts / post: 2.7
Top of the latest posts
I've finally replaced the old-school #CAPTCHA required to sign up on https://cvecrowd.com with an open-source, #privacy preserving, #accessible, and globally compliant alternative: #ALTCHA It relies on proof of work and I am super hyped to
CVE Crowd's search feature is now public! This means you can now search for vendors, products, package names or CVE numbers and find related posts on the Fediverse and Bluesky - all without signing up anymore. Previously, I used sign up as
Next time somebody asks me a question that requires some thinking, I’m going to ask them to perform a short unnecessary computation first to prove they are serious. Yes, I am implementing #ALTCHA in my user interface!
#altcha across platforms
every network with a public tag surfaceFollow #altcha 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/altcha