Pith Number

pith:TYUXTRTC

pith:1997:TYUXTRTCILA2NTM7B4KGPFQ74M

not attested not anchored not stored refs pending

The Origin of the Brightest Cluster Galaxies

John Dubinski (CITA)

arxiv:astro-ph/9709102 v2 · 1997-09-11 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TYUXTRTCILA2NTM7B4KGPFQ74M}

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	2026-07-04T16:03:14.081109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e2979c66242c1a6cd9f0f1467961fe32cc2c964d1fc021d7b5f6e9430c73f0b

Aliases

arxiv: astro-ph/9709102 · arxiv_version: astro-ph/9709102v2 · doi: 10.48550/arxiv.astro-ph/9709102 · pith_short_12: TYUXTRTCILA2 · pith_short_16: TYUXTRTCILA2NTM7 · pith_short_8: TYUXTRTC

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/TYUXTRTCILA2NTM7B4KGPFQ74M \
  | 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: 9e2979c66242c1a6cd9f0f1467961fe32cc2c964d1fc021d7b5f6e9430c73f0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6000141086756c4d754b93a4599b24e05916104c4ee8a7edcf5ea72d85b1f5a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-09-11T04:03:28Z",
    "title_canon_sha256": "fd8d14ad387e7c8c4dbd3b345719ebf6f30c7f1e11a10329c502a722e5e04270"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9709102",
    "kind": "arxiv",
    "version": 2
  }
}