Pith Number

pith:PZ6VLG5N

pith:2007:PZ6VLG5NJOSTRH5PGOTHID4Y4D

not attested not anchored not stored refs pending

Spectroscopic Studies of Extremely Metal-Poor Stars with the Subaru High Dispersion Spectrograph. IV. The alpha-Element-Enhanced Metal-Poor Star BS16934-002

Hideyuki Umeda, John E. Norris, Ken'ichi Nomoto, Masahide Takada-Hidai, Nobuyuki Iwamoto, Nozomu Tominaga, Satoshi Honda, Sean G. Ryan, Timothy C. Beers, Wako Aoki

arxiv:astro-ph/0701159 v1 · 2007-01-06 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PZ6VLG5NJOSTRH5PGOTHID4Y4D}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:29:14.321443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e7d559bad4ba5389faf33a6740f98e0ec52c3937beb8d67293370a67c917500

Aliases

arxiv: astro-ph/0701159 · arxiv_version: astro-ph/0701159v1 · doi: 10.48550/arxiv.astro-ph/0701159 · pith_short_12: PZ6VLG5NJOST · pith_short_16: PZ6VLG5NJOSTRH5P · pith_short_8: PZ6VLG5N

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/PZ6VLG5NJOSTRH5PGOTHID4Y4D \
  | 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: 7e7d559bad4ba5389faf33a6740f98e0ec52c3937beb8d67293370a67c917500

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9796c0ea2aab72d7bc8dfd63fb05f3f6da3346d0d0231dcc9d70c53a47ac1fa3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-06T04:31:11Z",
    "title_canon_sha256": "95196df86364e5a2b72603f7847458555d6f44ecdd7cf51355dbba7217d37823"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701159",
    "kind": "arxiv",
    "version": 1
  }
}