Pith Number

pith:2ELZOTF3

pith:2004:2ELZOTF3HVEC4NYY5HQH5H3IEL

not attested not anchored not stored refs pending

Type Ia supernova SN 2003du: optical observations

D.K. Sahu, G.C. Anupama, J. Jose (Indian Institute of Astrophysics)

arxiv:astro-ph/0409494 v1 · 2004-09-21 · 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{2ELZOTF3HVEC4NYY5HQH5H3IEL}

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	2026-07-04T16:44:43.782485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d117974cbb3d482e3718e9e07e9f6822dfd87a9d1d6cbdc69315d889548c889b

Aliases

arxiv: astro-ph/0409494 · arxiv_version: astro-ph/0409494v1 · doi: 10.48550/arxiv.astro-ph/0409494 · pith_short_12: 2ELZOTF3HVEC · pith_short_16: 2ELZOTF3HVEC4NYY · pith_short_8: 2ELZOTF3

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/2ELZOTF3HVEC4NYY5HQH5H3IEL \
  | 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: d117974cbb3d482e3718e9e07e9f6822dfd87a9d1d6cbdc69315d889548c889b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51a3c7c1320dad677291bf36bdbf9f349705815fc8db9e2941a814464c773a93",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-21T08:29:13Z",
    "title_canon_sha256": "34466d18e7c0de030614d524fcfad45e484f17ed9a210dbe4e42d014d98e1e16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409494",
    "kind": "arxiv",
    "version": 1
  }
}