Pith Number

pith:WYJENTCD

pith:2002:WYJENTCDDMHBSVQVARZQIMHONA

not attested not anchored not stored refs pending

The Progenitor of Supernova 1993J Revisited

A.V. Filippenko, P. Challis, P. Hoeflich, P.M. Garnavich, R.L. Kurucz, R.P. Kirshner, S.D. Van Dyk

arxiv:astro-ph/0208382 v1 · 2002-08-20 · 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{WYJENTCDDMHBSVQVARZQIMHONA}

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	2026-07-04T16:30:40.056192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b61246cc431b0e19561504730430ee682ae44db8fe58f3e152402b04ae54fd64

Aliases

arxiv: astro-ph/0208382 · arxiv_version: astro-ph/0208382v1 · doi: 10.48550/arxiv.astro-ph/0208382 · pith_short_12: WYJENTCDDMHB · pith_short_16: WYJENTCDDMHBSVQV · pith_short_8: WYJENTCD

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/WYJENTCDDMHBSVQVARZQIMHONA \
  | 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: b61246cc431b0e19561504730430ee682ae44db8fe58f3e152402b04ae54fd64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01109ea805e431535e4a20b17111595d94de441cc28e94e39d2bab7cc524a26e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-20T22:37:31Z",
    "title_canon_sha256": "4f752d9eaf6431c154916742eac9eb5e01f17e6accfc8c907c9d8940d0220fbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208382",
    "kind": "arxiv",
    "version": 1
  }
}