Pith Number

pith:JOADXDIX

pith:2024:JOADXDIX4NXSF4GLNO3L7YMIKO

not attested not anchored not stored refs pending

X-Shooting ULLYSES: Massive stars at low metallicity. IV. Spectral analysis methods and exemplary results for O stars

A.A.C. Sander, A.C. Gormaz-Matamala, A. Herrero, A. Mehner, A. ud-Doula, C.J.K. Larkin, D.J. Hillier, D. Pauli, E.C. Sch\"osser, F. Backs, F. Martins, F. Najarro, H. Todt, J.-C. Bouret, J.M. Bestenlehner, J. Puls, J.S. Vink, L.M. Oskinova, M. Bernini-Peron, O. Maryeva, P.A. Crowther, R. Kuiper, R.R. Lefever, S.A. Brands, S.R. Berlanas, T. Shenar, V.M.A. G\'omez-Gonz\'alez, V. Ramachandran, W.-R. Hamann

arxiv:2407.03137 v2 · 2024-07-03 · astro-ph.SR · astro-ph.GA · 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{JOADXDIX4NXSF4GLNO3L7YMIKO}

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	2026-07-05T09:02:22.145415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b803b8d17e36f22f0cb6bb6bfe18853be49eb7bce683d4cb9da8caec899e9e6

Aliases

arxiv: 2407.03137 · arxiv_version: 2407.03137v2 · doi: 10.48550/arxiv.2407.03137 · pith_short_12: JOADXDIX4NXS · pith_short_16: JOADXDIX4NXSF4GL · pith_short_8: JOADXDIX

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/JOADXDIX4NXSF4GLNO3L7YMIKO \
  | 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: 4b803b8d17e36f22f0cb6bb6bfe18853be49eb7bce683d4cb9da8caec899e9e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af315e1ee682fea93b0ec1ed858a33978dedc82ff4e437a7aaf062b42a640e0d",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2024-07-03T14:17:09Z",
    "title_canon_sha256": "b23f4ed2163e62b240dc3020b25c8f5a4fd02f4cc3b8bd152a5377b8af119847"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2407.03137",
    "kind": "arxiv",
    "version": 2
  }
}