Pith Number

pith:2UG27H4V

pith:2003:2UG27H4VSSJ554ZNFAU4RPK52Y

not attested not anchored not stored refs pending

SN 1994W: evidence of explosive mass ejection a few years before explosion

Aaron J. Barth, Alexei V. Filippenko, Angela Bragaglia, Douglas C. Leonard, Jesper Sollerman, Nikolai N. Chugai, Peter Lundqvist, Robert J. Cumming, Sergei I. Blinnikov, Thomas Matheson

arxiv:astro-ph/0309226 v1 · 2003-09-08 · 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{2UG27H4VSSJ554ZNFAU4RPK52Y}

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	2026-07-04T14:12:52.643823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d50daf9f959493def32d2829c8bd5dd625cebc3bf8c8415531987d314edb7c7a

Aliases

arxiv: astro-ph/0309226 · arxiv_version: astro-ph/0309226v1 · doi: 10.48550/arxiv.astro-ph/0309226 · pith_short_12: 2UG27H4VSSJ5 · pith_short_16: 2UG27H4VSSJ554ZN · pith_short_8: 2UG27H4V

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/2UG27H4VSSJ554ZNFAU4RPK52Y \
  | 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: d50daf9f959493def32d2829c8bd5dd625cebc3bf8c8415531987d314edb7c7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdd91ec761ce541c2077ce2da2e8288751a4d4c038bea265cbd915f75d544926",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-08T09:57:50Z",
    "title_canon_sha256": "e2cacccd0bd6b7979770ae4a48b5370931bd9c264d5ae2c215027aa8b430bcda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309226",
    "kind": "arxiv",
    "version": 1
  }
}