Pith Number

pith:E7AELYRT

pith:2002:E7AELYRT6PWCQENSOFJ63B7IQU

not attested not anchored not stored refs pending

A flattening in the Optical Light Curve of SN 2002ap

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

arxiv:astro-ph/0209507 v1 · 2002-09-24 · 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{E7AELYRT6PWCQENSOFJ63B7IQU}

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	2026-05-18T01:07:44.481612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27c045e233f3ec2811b27153ed87e8851c8d1a385f0dd97cfe5645aed804790f

Aliases

arxiv: astro-ph/0209507 · arxiv_version: astro-ph/0209507v1 · doi: 10.48550/arxiv.astro-ph/0209507 · pith_short_12: E7AELYRT6PWC · pith_short_16: E7AELYRT6PWCQENS · pith_short_8: E7AELYRT

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/E7AELYRT6PWCQENSOFJ63B7IQU \
  | 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: 27c045e233f3ec2811b27153ed87e8851c8d1a385f0dd97cfe5645aed804790f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb934867306e07aa06e4a5edcc2301085ed9a13c93fff88a9e24496fe68912ba",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-09-24T17:50:09Z",
    "title_canon_sha256": "b772cfadef179fe443d9d3061a697a6e60737224fd483d36c5a4b28d8d6c3428"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0209507",
    "kind": "arxiv",
    "version": 1
  }
}