Pith Number

pith:ZIFZEX5K

pith:2019:ZIFZEX5KT6FDUSI6W2IJE3M7OT

not attested not anchored not stored refs pending

Massive stars in extremely metal-poor galaxies: A window into the past

A. de Koter, A. Herrero, A. W. Fullerton, A. Wofford, C. J. Evans, D. J. Lennon, D. Sz\'ecsi, F. Martins, F. Najarro, F. Tramper, H. Sana, I. Negueruela, J.C. Bouret, J. M. Bestenlehner, J. Th. van Loon, J. Vink, M. Cervi\~no, M. Garcia, M. Gieles, N. Castro, S. E. de Mink, S. Sim\'on-D\'iaz

arxiv:1908.04687 v1 · 2019-08-12 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZIFZEX5KT6FDUSI6W2IJE3M7OT}

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.

Cited by

1 paper in Pith

A high-resolution K-band spectral atlas of massive stars

Receipt and verification

First computed	2026-07-04T23:55:15.621986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca0b925faa9f8a3a491eb690926d9f74d9e043b79fa88f872074b5535b88081e

Aliases

arxiv: 1908.04687 · arxiv_version: 1908.04687v1 · doi: 10.48550/arxiv.1908.04687 · pith_short_12: ZIFZEX5KT6FD · pith_short_16: ZIFZEX5KT6FDUSI6 · pith_short_8: ZIFZEX5K

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/ZIFZEX5KT6FDUSI6W2IJE3M7OT \
  | 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: ca0b925faa9f8a3a491eb690926d9f74d9e043b79fa88f872074b5535b88081e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c15451da52e232b22ad33513904d42e294e57eecc01aef85eac82bdde7d6072",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-12T13:58:17Z",
    "title_canon_sha256": "f4dd144e2b19a629aa27ab925879fe485c93da3e593266fea72b67b7faf3cadf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04687",
    "kind": "arxiv",
    "version": 1
  }
}