Pith Number

pith:PW4DRBP6

pith:2001:PW4DRBP6NEQ667VAO64BPTLL7A

not attested not anchored not stored refs pending

The Chemical Composition of Carbon-Rich, Very Metal-Poor Stars: A New Class of Mildly Carbon-Rich Objects Without Excess of Neutron-Capture Elements

Hiroyasu Ando, John E. Norris, Sean G. Ryan, Timothy C. Beers, Wako Aoki

arxiv:astro-ph/0111297 v1 · 2001-11-15 · 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{PW4DRBP6NEQ667VAO64BPTLL7A}

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	2026-07-04T16:24:28.961694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7db83885fe6921ef7ea077b817cd6bf80378a206bc76602a182cb918e68603b4

Aliases

arxiv: astro-ph/0111297 · arxiv_version: astro-ph/0111297v1 · doi: 10.48550/arxiv.astro-ph/0111297 · pith_short_12: PW4DRBP6NEQ6 · pith_short_16: PW4DRBP6NEQ667VA · pith_short_8: PW4DRBP6

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/PW4DRBP6NEQ667VAO64BPTLL7A \
  | 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: 7db83885fe6921ef7ea077b817cd6bf80378a206bc76602a182cb918e68603b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "572d6ed90663121d1adbb8954c3e485bbbe832b5eeeca0205708969b80514477",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-11-15T07:26:09Z",
    "title_canon_sha256": "8f8a81df15503754e337f94d6032da5a5191ac5420929734ef32770d37e3a72c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0111297",
    "kind": "arxiv",
    "version": 1
  }
}