Pith Number

pith:EK4UUQWH

pith:2009:EK4UUQWH53TGPQTGECC4QLXOF4

not attested not anchored not stored refs pending

Characterizing the Properties of Clusters of Galaxies as a Function of Luminosity and Redshift

A. Goobar, G. Madejski, J.R. Peterson, K. Andersson

arxiv:0902.0003 v1 · 2009-02-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EK4UUQWH53TGPQTGECC4QLXOF4}

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	2026-05-18T04:29:16.954506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22b94a42c7eee667c2662085c82eee2f1506419fb776dccd4916a2ac404a1049

Aliases

arxiv: 0902.0003 · arxiv_version: 0902.0003v1 · doi: 10.48550/arxiv.0902.0003 · pith_short_12: EK4UUQWH53TG · pith_short_16: EK4UUQWH53TGPQTG · pith_short_8: EK4UUQWH

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/EK4UUQWH53TGPQTGECC4QLXOF4 \
  | 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: 22b94a42c7eee667c2662085c82eee2f1506419fb776dccd4916a2ac404a1049

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fe43306f59af605b290926fab9e408cda6436e676866ef33e5dd4c55c5e59f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-02T20:11:24Z",
    "title_canon_sha256": "915d56374085cba0f4052d0709614497f7b7350ed569a0ae204b19d16c5c63ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0003",
    "kind": "arxiv",
    "version": 1
  }
}