Pith Number

pith:QLSSSQ5H

pith:2021:QLSSSQ5HOEETLQARSEOGKRN2T2

not attested not anchored not stored refs pending

Ultra-compact dwarfs beyond the centre of the Fornax galaxy cluster: Hints of UCD formation in low-density environments

Aku Venhola, Edwin A. Valentijn, Gijs Verdoes Kleijn, Joachim Janz, Michael Hilker, Michele Cantiello, Reynier F. Peletier, Steffen Mieske, Teymoor Saifollahi

arxiv:2104.00004 v2 · 2021-03-31 · astro-ph.GA · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QLSSSQ5HOEETLQARSEOGKRN2T2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T02:35:41.452158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82e52943a7710935c011911c6545ba9ebc0a0d644d6d5ba7ad491d1d828b7aa9

Aliases

arxiv: 2104.00004 · arxiv_version: 2104.00004v2 · doi: 10.48550/arxiv.2104.00004 · pith_short_12: QLSSSQ5HOEET · pith_short_16: QLSSSQ5HOEETLQAR · pith_short_8: QLSSSQ5H

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QLSSSQ5HOEETLQARSEOGKRN2T2 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 82e52943a7710935c011911c6545ba9ebc0a0d644d6d5ba7ad491d1d828b7aa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f566baad99d9431eb2193838304852f6b678fc9f17c022e1fd66376e0bc42b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-31T18:00:00Z",
    "title_canon_sha256": "78fd19b117a319e582a7a5a77a41ce9c2407e35e91fd3cf6b51bda7987d83452"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.00004",
    "kind": "arxiv",
    "version": 2
  }
}