Pith Number

pith:UQ23H7ZC

pith:2001:UQ23H7ZCDBENWX37YZ5GCHUAVS

not attested not anchored not stored refs pending

A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks

Alister W. Graham, W. J. G. de Blok

arxiv:astro-ph/0103405 v1 · 2001-03-24 · 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{UQ23H7ZCDBENWX37YZ5GCHUAVS}

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	2026-05-18T03:57:01.469493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a435b3ff221848db5f7fc67a611e80ac8af9fdf98c85e0a3def0df07c1ba0223

Aliases

arxiv: astro-ph/0103405 · arxiv_version: astro-ph/0103405v1 · doi: 10.48550/arxiv.astro-ph/0103405 · pith_short_12: UQ23H7ZCDBEN · pith_short_16: UQ23H7ZCDBENWX37 · pith_short_8: UQ23H7ZC

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/UQ23H7ZCDBENWX37YZ5GCHUAVS \
  | 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: a435b3ff221848db5f7fc67a611e80ac8af9fdf98c85e0a3def0df07c1ba0223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "134193003e28846e97f0371c695d3a6dace97762ce1016fb0041f7d38defed33",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-03-24T15:00:08Z",
    "title_canon_sha256": "df3428472e96cca8c135557c0830219ffa3c801aa6e4ec41acb1092047f0887f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0103405",
    "kind": "arxiv",
    "version": 1
  }
}