Pith Number

pith:VJQ35U7Y

pith:2005:VJQ35U7YPA53NIZ4CLNPUY4ZPY

not attested not anchored not stored refs pending

The Progenitor of SN 2005cs in the Whirlpool Galaxy

I.J. Danziger (INAF, J.R. Maund (Institute of Astronomy), S.J. Smartt (Queen's University Belfast), Trieste)

arxiv:astro-ph/0507502 v2 · 2005-07-21 · 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{VJQ35U7YPA53NIZ4CLNPUY4ZPY}

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	2026-07-04T17:19:00.576468Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa61bed3f8783bb6a33c12dafa63997e0078aef07fe453464dd38ed1608810c4

Aliases

arxiv: astro-ph/0507502 · arxiv_version: astro-ph/0507502v2 · doi: 10.48550/arxiv.astro-ph/0507502 · pith_short_12: VJQ35U7YPA53 · pith_short_16: VJQ35U7YPA53NIZ4 · pith_short_8: VJQ35U7Y

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/VJQ35U7YPA53NIZ4CLNPUY4ZPY \
  | 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: aa61bed3f8783bb6a33c12dafa63997e0078aef07fe453464dd38ed1608810c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d86a5c2c6145719f75871036ec3156d05d0846728691fdd00494a117aafe679",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-21T10:08:19Z",
    "title_canon_sha256": "035803949ed2136b18d2e5f4382a096de4aa18c841a26381f93264ef3714e8f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507502",
    "kind": "arxiv",
    "version": 2
  }
}