Pith Number

pith:IQCB7A2Q

pith:2003:IQCB7A2Q4H7KSW6XM7YZRQ4A4I

not attested not anchored not stored refs pending

SN 2002ap, the hypernova of class Ic

D. Bhattacharya, D. K. Sahu, G.C. Anupama, Ram Sagar, S. B. Pandey

arxiv:astro-ph/0304482 v1 · 2003-04-27 · 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{IQCB7A2Q4H7KSW6XM7YZRQ4A4I}

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	2026-07-04T14:12:42.213050Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44041f8350e1fea95bd767f198c380e21cfcc9f30878c0d3da25bc1ddaa372aa

Aliases

arxiv: astro-ph/0304482 · arxiv_version: astro-ph/0304482v1 · doi: 10.48550/arxiv.astro-ph/0304482 · pith_short_12: IQCB7A2Q4H7K · pith_short_16: IQCB7A2Q4H7KSW6X · pith_short_8: IQCB7A2Q

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/IQCB7A2Q4H7KSW6XM7YZRQ4A4I \
  | 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: 44041f8350e1fea95bd767f198c380e21cfcc9f30878c0d3da25bc1ddaa372aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdba9eaf13e7a88ffafefda5ebbcf8043bcbbe0cc9b189a3387a5cc192a7b13f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-27T09:33:44Z",
    "title_canon_sha256": "a339caa68c3650759797e71c9fe66ff95bb725180888029452340c9d06af94b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304482",
    "kind": "arxiv",
    "version": 1
  }
}