Pith Number

pith:VBSWBCYS

pith:2015:VBSWBCYSORYQC4W5AMKVCREPOE

not attested not anchored not stored refs pending

The little-studied cluster Berkeley 90. I. LS III +46 11: a very massive O3.5 If* + O3.5 If* binary

A. Marco, A. Pellerin, A. Sota, I. Negueruela, J. ALonso-Santiago, J. Lorenzo, J. Ma\'iz Apell\'aniz, J. Sanchez Bermudez, N. R. Walborn, R. C. Gamen, R. H. Barb\'a, S. Sim\'on-D\'iaz

arxiv:1504.06977 v1 · 2015-04-27 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VBSWBCYSORYQC4W5AMKVCREPOE}

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	2026-05-18T01:36:53.730323Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a865608b1274710172dd031551448f711d427e86ca3ab2623fcc750dcf4d62d3

Aliases

arxiv: 1504.06977 · arxiv_version: 1504.06977v1 · doi: 10.48550/arxiv.1504.06977 · pith_short_12: VBSWBCYSORYQ · pith_short_16: VBSWBCYSORYQC4W5 · pith_short_8: VBSWBCYS

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/VBSWBCYSORYQC4W5AMKVCREPOE \
  | 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: a865608b1274710172dd031551448f711d427e86ca3ab2623fcc750dcf4d62d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eea8ff1ad806197304c9e3e07816463c9ae8605aaba340cdee2e80ca21dc869b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-27T09:00:31Z",
    "title_canon_sha256": "f837d7b45fd7d8d6aea43d86ad405fb96ea2e292957bca9e9689ce1127c2b6c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06977",
    "kind": "arxiv",
    "version": 1
  }
}