Pith Number

pith:5QFTNQ6L

pith:2001:5QFTNQ6LSAHVKWUOTFPRV4PDHS

not attested not anchored not stored refs pending

Extremely Metal-Poor Stars. VIII. High-Resolution, High-Signal-To-Noise Analysis of Five Stars with [Fe/H] < -3.5

John E. Norris (Research School of Astronomy & Astrophysics, Michigan State University), Sean G. Ryan (Department of Physics & Astronomy, The Australian National University), The Open University, UK) Timothy C. Beers (Department of Physics & Astronomy

arxiv:astro-ph/0107304 v1 · 2001-07-17 · 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{5QFTNQ6LSAHVKWUOTFPRV4PDHS}

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	2026-07-04T16:23:43.146593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec0b36c3cb900f555a8e995f1af1e33ca221571223c3f4239b0fa12d3398b99f

Aliases

arxiv: astro-ph/0107304 · arxiv_version: astro-ph/0107304v1 · doi: 10.48550/arxiv.astro-ph/0107304 · pith_short_12: 5QFTNQ6LSAHV · pith_short_16: 5QFTNQ6LSAHVKWUO · pith_short_8: 5QFTNQ6L

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/5QFTNQ6LSAHVKWUOTFPRV4PDHS \
  | 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: ec0b36c3cb900f555a8e995f1af1e33ca221571223c3f4239b0fa12d3398b99f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a4dcfcd33853d179e00fde473e023999faca27c5e5a21e349f4ebdb0633af1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-17T13:23:33Z",
    "title_canon_sha256": "cd2e75f8de36f92c2ee17fc8dbf0b888399a2488b7a9bfeed1daa57505fd1bce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107304",
    "kind": "arxiv",
    "version": 1
  }
}