Pith Number

pith:2SQ56RRP

pith:1997:2SQ56RRPTUKVVWCFPQMUJGMKUP

not attested not anchored not stored refs pending

New Models for Wolf-Rayet and O Star Populations in Young Starbursts

Daniel Schaerer (STScI), William D. Vacca (IfA)

arxiv:astro-ph/9711140 v1 · 1997-11-12 · 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{2SQ56RRPTUKVVWCFPQMUJGMKUP}

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	2026-07-04T16:03:22.796928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4a1df462f9d155ad8457c1944998aa3cdb4330e9c38f531b6f394844ca4aa48

Aliases

arxiv: astro-ph/9711140 · arxiv_version: astro-ph/9711140v1 · doi: 10.48550/arxiv.astro-ph/9711140 · pith_short_12: 2SQ56RRPTUKV · pith_short_16: 2SQ56RRPTUKVVWCF · pith_short_8: 2SQ56RRP

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/2SQ56RRPTUKVVWCFPQMUJGMKUP \
  | 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: d4a1df462f9d155ad8457c1944998aa3cdb4330e9c38f531b6f394844ca4aa48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f57597ea226da4c47db057ec4a4a8b73e9a76afe054a626553ff5cb3f3a76160",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-11-12T17:55:06Z",
    "title_canon_sha256": "08d8531cfdb4cf5f487a89f31cef5acd4ce3307863eefba1b71410eff7ce990a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9711140",
    "kind": "arxiv",
    "version": 1
  }
}