Pith Number

pith:TGJWWM7W

pith:2001:TGJWWM7WWTN6T5SHKQOO3SW7FZ

not attested not anchored not stored refs pending

The Ursa Major Cluster of Galaxies. IV ; HI synthesis observations

Marc A.W. Verheijen, Renzo Sancisi

arxiv:astro-ph/0101404 v1 · 2001-01-23 · 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{TGJWWM7WWTN6T5SHKQOO3SW7FZ}

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	2026-07-04T16:22:36.659309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99936b33f6b4dbe9f647541cedcadf2e420fb2f7db1091b10b08d1f8a7a795fc

Aliases

arxiv: astro-ph/0101404 · arxiv_version: astro-ph/0101404v1 · doi: 10.48550/arxiv.astro-ph/0101404 · pith_short_12: TGJWWM7WWTN6 · pith_short_16: TGJWWM7WWTN6T5SH · pith_short_8: TGJWWM7W

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/TGJWWM7WWTN6T5SHKQOO3SW7FZ \
  | 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: 99936b33f6b4dbe9f647541cedcadf2e420fb2f7db1091b10b08d1f8a7a795fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ada5741b0fc98be1c3ba6ce2b0163da05d8288ce11ff228cfc2d74d3823f93d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-23T11:31:30Z",
    "title_canon_sha256": "115f65da89413250b77cdca07b073a87340eaa6f82a7dd68af04b1671ed37669"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101404",
    "kind": "arxiv",
    "version": 1
  }
}