arc (noun): That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon. As a hashtag, #arc carries this topic across social platforms.

In the last 7 days, #arc was used 19 times by 16 accounts on the open social web, measured via fosstodon.org (Mastodon public tags API).

What hashtags are related to #arc?

Related hashtags include #architecture, #Arctic, #Arcade, #archlinux, #archaeology, #Archive, #Arch, #Archives.

How much does it cost to own #arc?

#arc is available as a #name from $5,313.74 per year. You can claim it by card at https://hashtag.orghttps://hashtag.space/checkout/portal-name?name=arc or with tokens on hashtag.space at https://hashtag.space/#arc.

#Arc

Name: #arc — a #name on hashtag.org
Brand: hashtag.org
Price: 5313.74 USD
Availability: InStock

Live, measured metrics for the hashtag #Arc 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 #arc

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.

$5,313.74/ year · 3-character #name

Claim #arc — $5,313.74/yr→Buy on hashtag.space (web3)

card via hashtag.org · tokens via hashtag.space

Uses / 7 days

Mastodon

Accounts / 7 days

Mastodon

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-10-24 07:24 UTC

10-18

10-19

10-20

10-21

10-22

10-23

10-24

19 uses by 16 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 2026-10-24 07:24 UTC

#architecture

555 uses · 277 accounts / 7d

#Arctic

45 uses · 37 accounts / 7d

#Arcade

28 uses · 24 accounts / 7d

#archlinux

48 uses · 45 accounts / 7d

#archaeology

145 uses · 73 accounts / 7d

#Archive

144 uses · 44 accounts / 7d

#Arch

37 uses · 14 accounts / 7d

#Archives

36 uses · 34 accounts / 7d

#Architektur

26 uses · 25 accounts / 7d

#archery

12 uses · 11 accounts / 7d

#architecturephotography

53 uses · 35 accounts / 7d

#archeologie

9 uses · 9 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-24 07:24 UTC

Everything below is measured over the latest 40 public posts (spanning ~827 hours).

Posting hours (UTC) — busiest: 10:00

00:0012:0023:00

Languages: English (25) · German (3) · Portuguese (3) · Japanese (2) · Italian (2) · French (1)

Avg boosts / post: 1

Used together with

#intel ×9 #ai ×7 #tech ×4 #technology ×4 #pcgaming ×4 #windows ×4 #linux ×4 #dia ×3 #browser ×3 #software ×3 #development ×3 #hackernews ×3

What “arc” means

Wiktionary

arc/ɑːk/

nounThat part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.
verbTo move following a curved path.

Full entry on Wiktionary →

#arc across platforms

every network with a public tag surface

Follow #arc 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/arc