Pith Number

pith:XISS3A7I

pith:1998:XISS3A7IWXA6NOIAGZEOEM5W46

not attested not anchored not stored refs pending

A Brief History of Star Formation and Chemical Enrichment in the Bulge of the Milky Way

Jay A. Frogel (Dept. of Astronomy, The Ohio State University)

arxiv:astro-ph/9812034 v1 · 1998-12-02 · 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{XISS3A7IWXA6NOIAGZEOEM5W46}

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	2026-07-04T16:07:14.500946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba252d83e8b5c1e6b9003648e233b6e7bdb890cc7ff4289b0baf24189682729c

Aliases

arxiv: astro-ph/9812034 · arxiv_version: astro-ph/9812034v1 · doi: 10.48550/arxiv.astro-ph/9812034 · pith_short_12: XISS3A7IWXA6 · pith_short_16: XISS3A7IWXA6NOIA · pith_short_8: XISS3A7I

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/XISS3A7IWXA6NOIAGZEOEM5W46 \
  | 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: ba252d83e8b5c1e6b9003648e233b6e7bdb890cc7ff4289b0baf24189682729c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1002d2352e7294a76586e0ac8412dda1aed69bfdddac0fc673219035f8056a05",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-12-02T06:23:42Z",
    "title_canon_sha256": "d01fdc6f4792a9d60ec9fd767488e6fdd59cbde347119f660553740a90e93bea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9812034",
    "kind": "arxiv",
    "version": 1
  }
}