Pith Number

pith:UB7U75BR

pith:2009:UB7U75BRLNNXYMVD2HVOBVPTJZ

not attested not anchored not stored refs pending

On the Baryon Fractions in Clusters and Groups of Galaxies

2), (2) University of Michigan, (3) Ohio State University), Christopher S. Kochanek (3), Elena Rasia (2) ((1) University of Oklahoma, Joel N. Bregman (2), Xinyu Dai (1

arxiv:0911.2230 v2 · 2009-11-12 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UB7U75BRLNNXYMVD2HVOBVPTJZ}

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.

Cited by

1 paper in Pith

QCD-driven dark matter: AQNs formation and observational tests

Receipt and verification

First computed	2026-05-18T04:29:35.097839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a07f4ff4315b5b7c32a3d1eae0d5f34e5bd7046a001b001d9fd5538667d3d155

Aliases

arxiv: 0911.2230 · arxiv_version: 0911.2230v2 · doi: 10.48550/arxiv.0911.2230 · pith_short_12: UB7U75BRLNNX · pith_short_16: UB7U75BRLNNXYMVD · pith_short_8: UB7U75BR

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/UB7U75BRLNNXYMVD2HVOBVPTJZ \
  | 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: a07f4ff4315b5b7c32a3d1eae0d5f34e5bd7046a001b001d9fd5538667d3d155

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4747ea7d718bc96ab3b629bf47a1d421ec3f4f13dd2f402f707528b7f6c48fe5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-12T16:14:57Z",
    "title_canon_sha256": "c045ec3bfee22d520108385727f80291a2e8801a600554bfbc8f54df5717aad2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2230",
    "kind": "arxiv",
    "version": 2
  }
}