Pith Number

pith:BBG6X4LC

pith:1998:BBG6X4LCDU5WF54C5GMTLYQHG4

not attested not anchored not stored refs pending

Formation of Primordial Protostars

Kazuyuki Omukai, Ryoichi Nishi (Kyoto University)

arxiv:astro-ph/9811308 v1 · 1998-11-19 · 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{BBG6X4LCDU5WF54C5GMTLYQHG4}

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	2026-05-18T01:07:36.853006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

084debf1621d3b62f782e99935e207371981672b5506a5e9d4e6e31cfff73797

Aliases

arxiv: astro-ph/9811308 · arxiv_version: astro-ph/9811308v1 · doi: 10.48550/arxiv.astro-ph/9811308 · pith_short_12: BBG6X4LCDU5W · pith_short_16: BBG6X4LCDU5WF54C · pith_short_8: BBG6X4LC

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/BBG6X4LCDU5WF54C5GMTLYQHG4 \
  | 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: 084debf1621d3b62f782e99935e207371981672b5506a5e9d4e6e31cfff73797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f1ac9fda49fb84dcf0862f2878fdb01d2eb78b72f252e04eee57998331b6102",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-11-19T15:36:49Z",
    "title_canon_sha256": "cc60d8260b6064ed0856e950552f8d379472a047da5f796d7c770ee49f28758f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9811308",
    "kind": "arxiv",
    "version": 1
  }
}