Pith Number

pith:T4LCP45Y

pith:2015:T4LCP45YRRXSIIRNO43GUBI7RH

not attested not anchored not stored refs pending

A spectroscopic investigation of the O-type star population in four Cygnus OB associations. II. Determination of the fundamental parameters

C. A. Flores, G. Rauw, L. Mahy, M. De Becker, P. Eenens

arxiv:1504.03107 v1 · 2015-04-13 · 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{T4LCP45YRRXSIIRNO43GUBI7RH}

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	2026-05-18T01:40:48.957826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f1627f3b88c6f24222d77366a051f89e5650cf08a9060798c0c3caa490043d1

Aliases

arxiv: 1504.03107 · arxiv_version: 1504.03107v1 · doi: 10.48550/arxiv.1504.03107 · pith_short_12: T4LCP45YRRXS · pith_short_16: T4LCP45YRRXSIIRN · pith_short_8: T4LCP45Y

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/T4LCP45YRRXSIIRNO43GUBI7RH \
  | 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: 9f1627f3b88c6f24222d77366a051f89e5650cf08a9060798c0c3caa490043d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01f0d75f0c5ec1122ad3de73827b4a6b40fab0072a72110e94bc620dd6cbb652",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-13T09:28:30Z",
    "title_canon_sha256": "3f7a42c0bc223d4ba9e7c814febd5c5cb6c515dd216e64271b1784481e914576"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03107",
    "kind": "arxiv",
    "version": 1
  }
}