Pith Number

pith:UIW2WGLQ

pith:1997:UIW2WGLQYMNUCZK77O2VCBRJUQ

not attested not anchored not stored refs pending

Post-AGB Stars as Standard Extragalactic Candles

Howard E. Bond (Space Telescope Science Institute)

arxiv:astro-ph/9702008 v1 · 1997-02-01 · 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{UIW2WGLQYMNUCZK77O2VCBRJUQ}

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	2026-07-04T14:15:02.998825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a22dab1970c31b41655ffbb5510629a42508dc31337914699e4186c9b56a1a1d

Aliases

arxiv: astro-ph/9702008 · arxiv_version: astro-ph/9702008v1 · doi: 10.48550/arxiv.astro-ph/9702008 · pith_short_12: UIW2WGLQYMNU · pith_short_16: UIW2WGLQYMNUCZK7 · pith_short_8: UIW2WGLQ

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/UIW2WGLQYMNUCZK77O2VCBRJUQ \
  | 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: a22dab1970c31b41655ffbb5510629a42508dc31337914699e4186c9b56a1a1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a6e6afc3c66bffb5b77d663206486888340253ef0d8c5a6d1edc1d9f8039f8a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-02-01T21:34:04Z",
    "title_canon_sha256": "1d3cc37475064d07a818becaafbedc46b00bcd26d5ef2eb0c1c9061be06e6ba1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9702008",
    "kind": "arxiv",
    "version": 1
  }
}