Pith Number

pith:3USTTARD

pith:1997:3USTTARD6QQ7SMKSUQ6OFWN3JE

not attested not anchored not stored refs pending

The Ursa Major Cluster of Galaxies. II. Bimodality of the Distribution of Central Surface Brightnesses

Groningen, Hawaii), Honolulu, Marc A.W. Verheijen (Kapteyn Institute, R. Brent Tully (Institute for Astronomy, the Netherlands)

arxiv:astro-ph/9703029 v1 · 1997-03-05 · 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{3USTTARD6QQ7SMKSUQ6OFWN3JE}

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	2026-07-04T16:02:54.412380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd25398223f421f93152a43ce2d9bb49066f87bdbae9cc206bb045498f68762d

Aliases

arxiv: astro-ph/9703029 · arxiv_version: astro-ph/9703029v1 · doi: 10.48550/arxiv.astro-ph/9703029 · pith_short_12: 3USTTARD6QQ7 · pith_short_16: 3USTTARD6QQ7SMKS · pith_short_8: 3USTTARD

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/3USTTARD6QQ7SMKSUQ6OFWN3JE \
  | 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: dd25398223f421f93152a43ce2d9bb49066f87bdbae9cc206bb045498f68762d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9647627fa542a9779bd03dcc66824af6ab3ddfa0abba326637d91954ad06f5b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-03-05T18:40:21Z",
    "title_canon_sha256": "e8e62bbfb498a55470b8205667615ad77a12d952522a0a29b1924f351158ac09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9703029",
    "kind": "arxiv",
    "version": 1
  }
}