#isbn

Live, measured metrics for the hashtag #isbn from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #isbn

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.

$2,449.80/ year · 4-character #name
Claim #isbn — $2,449.80/yr→
Annual, renews each year
Buy on hashtag.space (web3)
one-timepay once, yours for life
card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 40
0.1
Avg reactions / post
Mastodon · last 40

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-07-27 14:24 UTC
0
07-21
0
07-22
0
07-23
0
07-24
0
07-25
0
07-26
0
07-27

0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-07-27 14:24 UTC
#isbn9783462051087
1 uses · 1 accounts / 7d
#ISBNdb
1 uses · 1 accounts / 7d
#isbnregistration
0 uses · 0 accounts / 7d
#isbnownership
0 uses · 0 accounts / 7d
#isbn9781324002550
0 uses · 0 accounts / 7d
#ISBNPA2023
0 uses · 0 accounts / 7d
#isbn9783453601024
0 uses · 0 accounts / 7d
#isbn9780367898649
0 uses · 0 accounts / 7d
#isbn9783956143205
0 uses · 0 accounts / 7d
#isbn9783406782008
0 uses · 0 accounts / 7d
#isbn_978_3_455_00681_0
0 uses · 0 accounts / 7d
#ISBN10
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-07-27 14:24 UTC

Everything below is measured over the latest 40 public posts (spanning ~14041 hours).

Posting hours (UTC) — busiest: 17:00

00:0012:0023:00

Languages: English (25) · German (6) · French (4) · Chinese (Taiwan) (1) · Polish (1) · Russian (1)

Avg boosts / post: 0.6

Top of the latest posts

  • #ISBN is a centralized system, you even have to pay not insignificant amount of money to get a number. I can't even figure out how to self-assign a #DOI . Is there anything else that helps identify #publications that doesn't have gatekeeper

    dorotaC@dcz♥ 3↻ 32024-12-29 08:41 UTCView post →

  • If you are a self-publishing author, you need to know that, while ISBNs are important, they are not a substitute for a copyright registration. https://www.plagiarismtoday.com/2026/07/14/warning-an-isbn-is-not-a-copyright-registration/ #Copy

    Jonathan Bailey@[email protected]♥ 0↻ 12026-07-14 19:45 UTCView post →

  • CAW Term of the Week – ISBN International Standard Book Number #CAW #CartersvilleAreaWriters #CartersvilleGeorgia #CartersvilleGA #ISBN #Writers

    Cartersville Area Writers@[email protected]♥ 0↻ 12026-06-23 17:35 UTCView post →

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/isbn