Pith Number

pith:IBDS5LL6

pith:2001:IBDS5LL6UHPSJFUHOTX3BXF5NJ

not attested not anchored not stored refs pending

Using Cepheids to determine the galactic abundance gradient I. The solar neighbourhood

B. Barbuy, D. Bersier, J. R. D. Lepine, R. E. Luck, R. U. Karpischek, S. M. Andrievsky, V. E. Panchuk, V. G. Klochkova, V. V. Kovtyukh, W. J. Maciel

arxiv:astro-ph/0112525 v1 · 2001-12-21 · 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{IBDS5LL6UHPSJFUHOTX3BXF5NJ}

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	2026-05-18T02:40:35.711823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40472ead7ea1df24968774efb0dcbd6a454ca9f360c68258dac36a049ef97bd6

Aliases

arxiv: astro-ph/0112525 · arxiv_version: astro-ph/0112525v1 · doi: 10.48550/arxiv.astro-ph/0112525 · pith_short_12: IBDS5LL6UHPS · pith_short_16: IBDS5LL6UHPSJFUH · pith_short_8: IBDS5LL6

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/IBDS5LL6UHPSJFUHOTX3BXF5NJ \
  | 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: 40472ead7ea1df24968774efb0dcbd6a454ca9f360c68258dac36a049ef97bd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "999d9d7c500987d1e086baece75974d03fb160914776a4ab7062bfb2e1ef3ab6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-12-21T19:36:01Z",
    "title_canon_sha256": "08a995409e81f8c581a4b9d31f2dbecea15cc6ed2204710ac8429c37c5fd1b05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0112525",
    "kind": "arxiv",
    "version": 1
  }
}