Pith Number

pith:GWH6RJ4X

pith:2012:GWH6RJ4XDXJQDD6UM73LYWESTZ

not attested not anchored not stored refs pending

IC4663: the first unambiguous [WN] Wolf-Rayet central star of a planetary nebula

Agn\`es Acker (Strasbourg), Anthony F. J. Moffat (Montr\'eal/CRAQ), Brent Miszalski (SAAO/SALT), Joachim K\"oppen (Strasbourg), Orsola De Marco (Macquarie), Paul A. Crowther (Sheffield), Todd C. Hillwig (Valparaiso)

arxiv:1210.0562 v1 · 2012-10-01 · 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{GWH6RJ4XDXJQDD6UM73LYWESTZ}

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	2026-05-18T03:44:14.916726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

358fe8a7971dd3018fd467f6bc58929e6ad1407f99605f853788557c39a84e9a

Aliases

arxiv: 1210.0562 · arxiv_version: 1210.0562v1 · doi: 10.48550/arxiv.1210.0562 · pith_short_12: GWH6RJ4XDXJQ · pith_short_16: GWH6RJ4XDXJQDD6U · pith_short_8: GWH6RJ4X

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/GWH6RJ4XDXJQDD6UM73LYWESTZ \
  | 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: 358fe8a7971dd3018fd467f6bc58929e6ad1407f99605f853788557c39a84e9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b66b8c22047787f5d209c200f5c37b0ee1ac839f28a5cd3c75791b91a621a23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-10-01T20:22:48Z",
    "title_canon_sha256": "fdef6bef88f560bf1d3be749b6c67c55b32769921e01b0f670462b9f88b86516"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0562",
    "kind": "arxiv",
    "version": 1
  }
}