Pith Number

pith:VH42ILWZ

pith:2016:VH42ILWZMQWBRQGUCTX73BSPGD

not attested not anchored not stored refs pending

Luminous and Variable Stars in M31 and M33. IV. Luminous Blue Variables, Candidate LBVs, and the B[e] Supergiants; How to Tell Them Apart

David Hahn, John C. Martin, Kerstin Weis, Michael S. Gordon, Roberta M. Humphreys

arxiv:1611.07986 v1 · 2016-11-23 · 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{VH42ILWZMQWBRQGUCTX73BSPGD}

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	2026-05-18T00:50:46.426489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9f9a42ed9642c18c0d414effd864f30e227bcb79e7761794d27b85f6d241eed

Aliases

arxiv: 1611.07986 · arxiv_version: 1611.07986v1 · doi: 10.48550/arxiv.1611.07986 · pith_short_12: VH42ILWZMQWB · pith_short_16: VH42ILWZMQWBRQGU · pith_short_8: VH42ILWZ

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/VH42ILWZMQWBRQGUCTX73BSPGD \
  | 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: a9f9a42ed9642c18c0d414effd864f30e227bcb79e7761794d27b85f6d241eed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12d179cdeb52e409614fab84d47126c6f8fea68107a1550ab3166dd2f7c927ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-11-23T21:00:08Z",
    "title_canon_sha256": "89c0cf40facc61c0020e0e9f3f5f036efbf68b1aadae71008167002f9fe9722e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.07986",
    "kind": "arxiv",
    "version": 1
  }
}