Pith Number

pith:7O7CFAEF

pith:2018:7O7CFAEFJB3VYRSSZEED53IL7Q

not attested not anchored not stored refs pending

Descendants of the first stars: the distinct chemical signature of second generation stars

Alexander P. Ji, Anna Frebel, Brendan Griffen, Brian W. O'Shea, Facundo A. G\'omez, Mattis Magg, Miho N. Ishigaki, Naoki Yoshida, Nozomu Tominaga, Ralf S. Klessen, Simon C. O. Glover, Tilman Hartwig

arxiv:1801.05044 v3 · 2018-01-15 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7O7CFAEFJB3VYRSSZEED53IL7Q}

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	2026-05-18T00:10:46.934006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbbe22808548775c4652c9083eed0bfc3801dcea34bc16d271d3f80ced8ef9f4

Aliases

arxiv: 1801.05044 · arxiv_version: 1801.05044v3 · doi: 10.48550/arxiv.1801.05044 · pith_short_12: 7O7CFAEFJB3V · pith_short_16: 7O7CFAEFJB3VYRSS · pith_short_8: 7O7CFAEF

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/7O7CFAEFJB3VYRSSZEED53IL7Q \
  | 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: fbbe22808548775c4652c9083eed0bfc3801dcea34bc16d271d3f80ced8ef9f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6efa80cbca5fe6f2db0bf226bfd88486f3508e12d51c1dfee6d7b362bfefde80",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-15T22:03:48Z",
    "title_canon_sha256": "270b41e30d340e018a01edcd01b2bebfb2c8e0720b0f3180df308497c65ea895"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05044",
    "kind": "arxiv",
    "version": 3
  }
}