Pith Number

pith:WPO5NCAY

pith:1997:WPO5NCAYEJTSTWRARXS5URTSQU

not attested not anchored not stored refs pending

Stellar populations of cluster E and S0 galaxies

Inger Jorgensen (McDonald Observatory)

arxiv:astro-ph/9702076 v1 · 1997-02-08 · 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{WPO5NCAYEJTSTWRARXS5URTSQU}

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	2026-05-18T01:40:18.171087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3ddd68818226729da208de5da4672851eae960ffec62b4e96c37a4a22690f5a

Aliases

arxiv: astro-ph/9702076 · arxiv_version: astro-ph/9702076v1 · doi: 10.48550/arxiv.astro-ph/9702076 · pith_short_12: WPO5NCAYEJTS · pith_short_16: WPO5NCAYEJTSTWRA · pith_short_8: WPO5NCAY

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/WPO5NCAYEJTSTWRARXS5URTSQU \
  | 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: b3ddd68818226729da208de5da4672851eae960ffec62b4e96c37a4a22690f5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ece1d880bffcd5040f0d46f764637dc921b1e9bf926c53c2a7d3e09687b7eb9b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-08T23:49:18Z",
    "title_canon_sha256": "c117071896b2a912f546a88b922a6f5c8bf973da715b728dec8909e17f87628d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702076",
    "kind": "arxiv",
    "version": 1
  }
}