Pith Number

pith:37NBDGH3

pith:1999:37NBDGH3P3UAQIPZOVWH3JBHXL

not attested not anchored not stored refs pending

Core-halo Structure of Chemically Homogeneous Massive Star and Bending of Zero-Age Main-Sequence

Mariko Kato (Keio Univ.), Mie Ishii, Munetaka Ueno (Univ. of Tokyo)

arxiv:astro-ph/9907154 v1 · 1999-07-13 · 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{37NBDGH3P3UAQIPZOVWH3JBHXL}

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	2026-05-18T01:40:12.927418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfda1198fb7ee80821f9756c7da427bad6d74fdb92ec5c1ed2e991a750c96617

Aliases

arxiv: astro-ph/9907154 · arxiv_version: astro-ph/9907154v1 · doi: 10.48550/arxiv.astro-ph/9907154 · pith_short_12: 37NBDGH3P3UA · pith_short_16: 37NBDGH3P3UAQIPZ · pith_short_8: 37NBDGH3

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/37NBDGH3P3UAQIPZOVWH3JBHXL \
  | 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: dfda1198fb7ee80821f9756c7da427bad6d74fdb92ec5c1ed2e991a750c96617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2fdec551e64aa0aafcd5d02a052593d48e147c0d325212b6ea800924af6d043",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-13T02:15:13Z",
    "title_canon_sha256": "381feffc2bf6271f5f0931ddb05d968a2f461adef5568b10c87467dff3780df2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907154",
    "kind": "arxiv",
    "version": 1
  }
}