Pith Number

pith:YUPX4CZL

pith:2025:YUPX4CZLCR5TWG67WNHZERSJZT

not attested not anchored not stored refs pending

Evolutionary models for the Very Massive Stars in the R136 cluster of 30 Doradus in the Large Magellanic Cloud

A. de Koter, J. Puls, N. Langer, S.A. Brands, Z. Keszthelyi

arxiv:2506.15230 v2 · 2025-06-18 · astro-ph.SR · astro-ph.GA · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YUPX4CZLCR5TWG67WNHZERSJZT}

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	2026-07-05T11:56:04.468494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c51f7e0b2b147b3b1bdfb34f924649ccc60da347406fcc306a914e74b50814ac

Aliases

arxiv: 2506.15230 · arxiv_version: 2506.15230v2 · doi: 10.48550/arxiv.2506.15230 · pith_short_12: YUPX4CZLCR5T · pith_short_16: YUPX4CZLCR5TWG67 · pith_short_8: YUPX4CZL

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/YUPX4CZLCR5TWG67WNHZERSJZT \
  | 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: c51f7e0b2b147b3b1bdfb34f924649ccc60da347406fcc306a914e74b50814ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f83c669198d643290c708e568efbcc35172c99d1fdb252885748fdee0c844400",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE",
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-06-18T08:13:58Z",
    "title_canon_sha256": "99b2f5e1712ecf710c5267b486badef54d8dbcb2072b3e6b5fccc07dbfb13230"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.15230",
    "kind": "arxiv",
    "version": 2
  }
}