Pith Number

pith:A3H4YN3I

pith:2002:A3H4YN3IJN52QAY2VJTAFFUWBI

not attested not anchored not stored refs pending

Supernova 2002ap - The First Month

Avishay Gal-Yam, Eran O. Ofek, Ohad Shemmer

arxiv:astro-ph/0204008 v1 · 2002-03-31 · 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{A3H4YN3IJN52QAY2VJTAFFUWBI}

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	2026-07-04T16:29:37.808641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2

Aliases

arxiv: astro-ph/0204008 · arxiv_version: astro-ph/0204008v1 · doi: 10.48550/arxiv.astro-ph/0204008 · pith_short_12: A3H4YN3IJN52 · pith_short_16: A3H4YN3IJN52QAY2 · pith_short_8: A3H4YN3I

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/A3H4YN3IJN52QAY2VJTAFFUWBI \
  | 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: 06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be1b9baebc0838df55fbbd601b3d072667c619906025cf4640cb293ff66d6886",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-03-31T06:48:03Z",
    "title_canon_sha256": "2f1db6ee020232fe5451a4757df7c6cdbb5966ce51bd0b6feef1cb2482d23d01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0204008",
    "kind": "arxiv",
    "version": 1
  }
}