Pith Number

pith:Q5DA5IQO

pith:1995:Q5DA5IQOHWDUE3D3XQKRFBCZ2U

not attested not anchored not stored refs pending

Statistics and properties of HII regions in a sample of grand design galaxies I. Luminosity functions

J.E. Beckman (IAC Tenerife), J.H. Knapen (Univ. de Montreal), M. Rozas

arxiv:astro-ph/9509060 v1 · 1995-09-11 · 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{Q5DA5IQOHWDUE3D3XQKRFBCZ2U}

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	2026-07-04T14:14:36.719602Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87460ea20e3d87426c7bbc15128459d520b37d7d95596c685a2755ccfa9c469c

Aliases

arxiv: astro-ph/9509060 · arxiv_version: astro-ph/9509060v1 · doi: 10.48550/arxiv.astro-ph/9509060 · pith_short_12: Q5DA5IQOHWDU · pith_short_16: Q5DA5IQOHWDUE3D3 · pith_short_8: Q5DA5IQO

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/Q5DA5IQOHWDUE3D3XQKRFBCZ2U \
  | 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: 87460ea20e3d87426c7bbc15128459d520b37d7d95596c685a2755ccfa9c469c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1fbf07479e4952eded1f787f4cb1ae07cb06d1c55b380f8bcdcb8f133b72ce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-09-11T14:27:48Z",
    "title_canon_sha256": "13aa21ccdda014f8fbb62144f1f32f687103d4fc9a345a6d3dd333f14aac5462"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9509060",
    "kind": "arxiv",
    "version": 1
  }
}