Pith Number

pith:L3XKBF3E

pith:2009:L3XKBF3EJS5EYBOZJL4TE34VGL

not attested not anchored not stored refs pending

A massive star origin for an unusual helium-rich supernova in an elliptical galaxy

E. Pian, J. Deng, K. Itagaki, K. Maeda, K. Nomoto, K. S. Kawabata, M. Tanaka, S. Taubenberger, T. Hattori

arxiv:0906.2811 v2 · 2009-06-16 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L3XKBF3EJS5EYBOZJL4TE34VGL}

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	2026-05-18T02:13:19.873295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eeea097644cba4c05d94af9326f9532e29d13106eaeba1be26c3ca965f8f9c1

Aliases

arxiv: 0906.2811 · arxiv_version: 0906.2811v2 · doi: 10.48550/arxiv.0906.2811 · pith_short_12: L3XKBF3EJS5E · pith_short_16: L3XKBF3EJS5EYBOZ · pith_short_8: L3XKBF3E

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/L3XKBF3EJS5EYBOZJL4TE34VGL \
  | 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: 5eeea097644cba4c05d94af9326f9532e29d13106eaeba1be26c3ca965f8f9c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df497ca236357f1ec867fa55222ab09af3aaa7c2d318ee45208a94b8689c67f2",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-16T19:54:46Z",
    "title_canon_sha256": "a4152bf60a7fc15c9759dd04cd74ffe5d484e8ac316d1681d88be3e3f13171c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2811",
    "kind": "arxiv",
    "version": 2
  }
}