Pith Number

pith:4WM2ZY3V

pith:2026:4WM2ZY3VRBZSJYECZXHTDV5E44

not attested not anchored not stored refs pending

Photometry is all you need: supernova classification as a mixing problem

Ana Sof\'ia M. Uzsoy, V. Ashley Villar

arxiv:2605.28922 v1 · 2026-05-27 · astro-ph.IM · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WM2ZY3VRBZSJYECZXHTDV5E44}

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	2026-05-29T00:04:16.665632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e599ace375887324e082cdcf31d7a4e73678f02877eb5a579ebf97319847b753

Aliases

arxiv: 2605.28922 · arxiv_version: 2605.28922v1 · doi: 10.48550/arxiv.2605.28922 · pith_short_12: 4WM2ZY3VRBZS · pith_short_16: 4WM2ZY3VRBZSJYEC · pith_short_8: 4WM2ZY3V

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/4WM2ZY3VRBZSJYECZXHTDV5E44 \
  | 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: e599ace375887324e082cdcf31d7a4e73678f02877eb5a579ebf97319847b753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0569209995500bc7aa7436ec4dcc692e0404984117548338dd8ce4e5285072c2",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-05-27T18:00:00Z",
    "title_canon_sha256": "86a98cfc8d64d2cc8817485c4fc000b714616b41f1f8ad4f5c70ca2b68381a02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28922",
    "kind": "arxiv",
    "version": 1
  }
}