Pith Number

pith:7YSJ2YHL

pith:2001:7YSJ2YHLJ5LCNU5LHVPYL5OUY6

not attested not anchored not stored refs pending

Early type stars at high galactic latitudes II. Four evolved B-type stars of unusual chemical composition

H. Edelmann, M. Ramspeck, U. Heber

arxiv:astro-ph/0109475 v2 · 2001-09-26 · 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{7YSJ2YHLJ5LCNU5LHVPYL5OUY6}

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	2026-07-04T16:24:11.326600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe249d60eb4f5626d3ab3d5f85f5d4c7a202a9d4ba04b99ab9099e49f1474b02

Aliases

arxiv: astro-ph/0109475 · arxiv_version: astro-ph/0109475v2 · doi: 10.48550/arxiv.astro-ph/0109475 · pith_short_12: 7YSJ2YHLJ5LC · pith_short_16: 7YSJ2YHLJ5LCNU5L · pith_short_8: 7YSJ2YHL

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/7YSJ2YHLJ5LCNU5LHVPYL5OUY6 \
  | 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: fe249d60eb4f5626d3ab3d5f85f5d4c7a202a9d4ba04b99ab9099e49f1474b02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9d6379175c9e911bb8ccd7ccab0172f3280ac36009ee4e391142166e5584ed6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-26T16:03:23Z",
    "title_canon_sha256": "c10aee95024bb06e7e0a213c92bfbcdaa7a3dea813aaa72a0f82006bf6dc7be8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109475",
    "kind": "arxiv",
    "version": 2
  }
}