#HistoricalPostcard

Live, measured metrics for the hashtag #HistoricalPostcard 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 #historicalpostcard

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.

$5.00/ year · 18-character #name
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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
0.8
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · mastodon.social (Mastodon public tags API) · fetched 2026-11-09 20:36 UTC
0
11-03
0
11-04
0
11-05
0
11-06
0
11-07
0
11-08
0
11-09

0 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 2026-11-09 20:36 UTC

No related tags with measured usage found for #historicalpostcard.

Live pulse

measured · mastodon.social (Mastodon tag timeline) · fetched 2026-11-09 20:36 UTC

Everything below is measured over the latest 40 public posts (spanning ~11952 hours).

Posting hours (UTC) — busiest: 18:00

00:0012:0023:00

Languages: English (31)

Avg boosts / post: 0.2

Top of the latest posts

  • NEW WORK Zukunftsbild. Der Nordpol als Sommerfrische (A vision of the future. The North Pole as a Summer Retreat) Postcard (found object), postmarked October 25, 1909, humorously depicting the North Pole as a summer holiday destination. Fro

    Swaantje Güntzel@Swaantje_Guentzel@pixelfed.social♥ 4↻ 02026-09-23 08:43 UTCView post →

  • 航空の基礎 飛行場を作れ Build airfields—the foundation of aviation Postcard . #WW2 #JapanesePropaganda #ImperialJapan #AviationHistory #MilitaryPostcard #HomefrontMobilization #AirfieldConstruction #WartimeJapan #HistoricalPostcard #PacificWar #Postca

    Aviation Librarian@Aviation_Librarian@mastodon.online♥ 3↻ 12026-04-25 11:00 UTCView post →

  • VINTAGE POSTCARD Fantaisie Dances Bouissavin Opera Dance https://www.cpaphil.com/en/products/vintage-postcard-fantaisie-dances-bouissavin-opera-dance https://www.paypal.com/ncp/payment/KQJ4EZFDP4YEL #VintagePostcard #AntiquePostcard #Postca

    Cpaphil@cpaphil♥ 3↻ 02025-10-01 18:04 UTCView post →

#historicalpostcard across platforms

every network with a public tag surface

Follow #historicalpostcard 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.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/historicalpostcard