Pith Number

pith:ADNV5DJO

pith:2009:ADNV5DJOKSRPEEMUEQBBRTXF2E

not attested not anchored not stored refs pending

Galaxy Clusters in the Line of Sight to Background Quasars: II. Environmental effects on the sizes of baryonic halo sizes

H. Andrews (1), I. Lacerna (1), L. F. Barrientos (1), N. Padilla (1), N. Tejos (2) ((1) Pontificia Universidad Catolica de Chile; (2) Universidad de Chile), P. Lira (2), S. Lopez (2)

arxiv:0902.1987 v1 · 2009-02-11 · 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{ADNV5DJOKSRPEEMUEQBBRTXF2E}

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	2026-05-18T04:27:57.375066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00db5e8d2e54a2f21194240218cee5d102f91608add0775e0ab8a4d1377116c5

Aliases

arxiv: 0902.1987 · arxiv_version: 0902.1987v1 · doi: 10.48550/arxiv.0902.1987 · pith_short_12: ADNV5DJOKSRP · pith_short_16: ADNV5DJOKSRPEEMU · pith_short_8: ADNV5DJO

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/ADNV5DJOKSRPEEMUEQBBRTXF2E \
  | 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: 00db5e8d2e54a2f21194240218cee5d102f91608add0775e0ab8a4d1377116c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "293c0c749b2563a617e5028475061f6fb4a29e1675f8e573c2810d5c659ca022",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-11T21:08:04Z",
    "title_canon_sha256": "dcb16a765880d93adabbf2d5311f8dbda81ee5acbbff91e1161a053aa3ac2349"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1987",
    "kind": "arxiv",
    "version": 1
  }
}