Pith Number

pith:MZWED5HQ

pith:1992:MZWED5HQHQFQAA2XINSAYGAQF2

not attested not anchored not stored refs pending

Expanding Photospheres of Type II Supernovae and the Extragalactic Distance Scale

B P Schmidt, R G Eastman, R P Kirshner

arxiv:astro-ph/9204004 v1 · 1992-04-30 · 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{MZWED5HQHQFQAA2XINSAYGAQF2}

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.

Cited by

1 paper in Pith

Expanding Ejecta Method: II. Framework for Cosmological Distance Measurements via Intensity Interferometry

Receipt and verification

First computed	2026-07-04T15:54:47.613759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

666c41f4f03c0b00035743640c18102e8d0ea757f86388f55e34d7abab50ae82

Aliases

arxiv: astro-ph/9204004 · arxiv_version: astro-ph/9204004v1 · doi: 10.48550/arxiv.astro-ph/9204004 · pith_short_12: MZWED5HQHQFQ · pith_short_16: MZWED5HQHQFQAA2X · pith_short_8: MZWED5HQ

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/MZWED5HQHQFQAA2XINSAYGAQF2 \
  | 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: 666c41f4f03c0b00035743640c18102e8d0ea757f86388f55e34d7abab50ae82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1827bc04208181c04714aad7286833f3eef15677683d3c17549f761bcf89d194",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1992-04-30T19:20:04Z",
    "title_canon_sha256": "189d02ec6cc4ca5d8177d53ebfbdc955e7d55eec1f294b3d42149a4521f9eb39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9204004",
    "kind": "arxiv",
    "version": 1
  }
}