Pith Number

pith:JSQ6N6WR

pith:2015:JSQ6N6WRSVSUKC6QWX3XZFOTCW

not attested not anchored not stored refs pending

The True origin of Wolf-Rayet stars

Jorick S. Vink (Armagh Observatory)

arxiv:1510.00227 v1 · 2015-10-01 · 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{JSQ6N6WRSVSUKC6QWX3XZFOTCW}

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	2026-05-18T01:31:20.408583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ca1e6fad19565450bd0b5f77c95d315a7b0cda0c822b93b085e50fc830ccc5d

Aliases

arxiv: 1510.00227 · arxiv_version: 1510.00227v1 · doi: 10.48550/arxiv.1510.00227 · pith_short_12: JSQ6N6WRSVSU · pith_short_16: JSQ6N6WRSVSUKC6Q · pith_short_8: JSQ6N6WR

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/JSQ6N6WRSVSUKC6QWX3XZFOTCW \
  | 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: 4ca1e6fad19565450bd0b5f77c95d315a7b0cda0c822b93b085e50fc830ccc5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bcbdda20fdcc15fb251d8e8a47d585b564813144225f280ae192669d17120c8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-10-01T13:38:45Z",
    "title_canon_sha256": "63d80ba235b0b9493041ab293cc59cdddff13fbe5203d7e73d4454142617a1d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00227",
    "kind": "arxiv",
    "version": 1
  }
}