Pith Number

pith:JXZJIIVC

pith:2000:JXZJIIVCQG2QU6OOF3FGM7UHEM

not attested not anchored not stored refs pending

The Age of the Galaxy from Thorium Cosmochronometry

C. Sneden, J.J. Cowan

arxiv:astro-ph/0008185 v1 · 2000-08-11 · 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{JXZJIIVCQG2QU6OOF3FGM7UHEM}

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	2026-07-04T14:10:38.904468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4df29422a281b50a79ce2eca667e87232a44221f31c1bf5e7d0dc106e88fc734

Aliases

arxiv: astro-ph/0008185 · arxiv_version: astro-ph/0008185v1 · doi: 10.48550/arxiv.astro-ph/0008185 · pith_short_12: JXZJIIVCQG2Q · pith_short_16: JXZJIIVCQG2QU6OO · pith_short_8: JXZJIIVC

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/JXZJIIVCQG2QU6OOF3FGM7UHEM \
  | 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: 4df29422a281b50a79ce2eca667e87232a44221f31c1bf5e7d0dc106e88fc734

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f744b5b8665ead7b61c9497016ee49f087fe20d6946e4596f068b730944cc504",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-08-11T16:20:12Z",
    "title_canon_sha256": "1c0e23df2f0d8d03224921b741ceba456bd35e26399068a1032686ade4668bc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0008185",
    "kind": "arxiv",
    "version": 1
  }
}