Pith Number

pith:WKCH6E7G

pith:2000:WKCH6E7GWIGNSEHXTWTJNXF5FI

not attested not anchored not stored refs pending

First VLT spectra of white dwarfs in a globular cluster

A. Renzini (ESO), D. Koester (Institut fuer Theoretische Physik und Astrophysik Kiel), R. Napiwotzki (Dr. Remeis-Sternwarte Bamberg), S. Moehler, U. Heber

arxiv:astro-ph/0002197 v1 · 2000-02-09 · 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{WKCH6E7GWIGNSEHXTWTJNXF5FI}

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	2026-07-04T14:10:10.235055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2847f13e6b20cd910f79da696dcbd2a2dbbbbd9a5c5ccd5d3b0620772a25375

Aliases

arxiv: astro-ph/0002197 · arxiv_version: astro-ph/0002197v1 · doi: 10.48550/arxiv.astro-ph/0002197 · pith_short_12: WKCH6E7GWIGN · pith_short_16: WKCH6E7GWIGNSEHX · pith_short_8: WKCH6E7G

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/WKCH6E7GWIGNSEHXTWTJNXF5FI \
  | 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: b2847f13e6b20cd910f79da696dcbd2a2dbbbbd9a5c5ccd5d3b0620772a25375

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5218c8886bf76368f8da442120d668fb2b239cb27fe99ed0fab7d9266c9f6e6f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-09T11:03:44Z",
    "title_canon_sha256": "8f52e66487beda968dd62a131a308d285c9f700962eb1a1ee524a20c2599da38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002197",
    "kind": "arxiv",
    "version": 1
  }
}