Pith Number

pith:N45AA46Z

pith:2005:N45AA46ZEGIWOM6DWKUFUSRCUG

not attested not anchored not stored refs pending

The Variation of Integrated Star IMFs among Galaxies

C. Weidner, P. Kroupa (Observatory of the University of Bonn)

arxiv:astro-ph/0502525 v1 · 2005-02-24 · 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{N45AA46ZEGIWOM6DWKUFUSRCUG}

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	2026-07-04T16:50:53.573257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f3a0073d921916733c3b2a85a4a22a19d95e46f71c14728c817482881938e71

Aliases

arxiv: astro-ph/0502525 · arxiv_version: astro-ph/0502525v1 · doi: 10.48550/arxiv.astro-ph/0502525 · pith_short_12: N45AA46ZEGIW · pith_short_16: N45AA46ZEGIWOM6D · pith_short_8: N45AA46Z

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/N45AA46ZEGIWOM6DWKUFUSRCUG \
  | 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: 6f3a0073d921916733c3b2a85a4a22a19d95e46f71c14728c817482881938e71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "328cac3ccfb6fa51ace500684e3bf626c85ddec63429dd8c95d70613bff0d2b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-24T21:05:14Z",
    "title_canon_sha256": "d3e2fd67e771414666d916cc10832cd2840b27d90637eae0432ed6d62bb0f2f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502525",
    "kind": "arxiv",
    "version": 1
  }
}