Pith Number

pith:ZIHFQU22

pith:2003:ZIHFQU22PDUS2CIPI6SB7PZOEO

not attested not anchored not stored refs pending

The Discovery of a Twelfth Wolf-Rayet Star in the Small Magellanic Cloud

J. Wm. Parker, K. A. G. Olsen, Philip Massey

arxiv:astro-ph/0308237 v1 · 2003-08-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZIHFQU22PDUS2CIPI6SB7PZOEO}

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	2026-05-18T02:40:26.950840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca0e58535a78e92d090f47a41fbf2e23aaa19e65413191260fefa7b913163dfa

Aliases

arxiv: astro-ph/0308237 · arxiv_version: astro-ph/0308237v1 · doi: 10.48550/arxiv.astro-ph/0308237 · pith_short_12: ZIHFQU22PDUS · pith_short_16: ZIHFQU22PDUS2CIP · pith_short_8: ZIHFQU22

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/ZIHFQU22PDUS2CIPI6SB7PZOEO \
  | 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: ca0e58535a78e92d090f47a41fbf2e23aaa19e65413191260fefa7b913163dfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3531779ab339edbc876938ede0db39e6efa423cf648cbb603e21e06044c931db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-13T20:38:30Z",
    "title_canon_sha256": "dec703ea245bcc513ad42d5cb769924e35cc84b9b3b80df6f4d54a183a9431de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308237",
    "kind": "arxiv",
    "version": 1
  }
}