Pith Number

pith:VZ4GGN2I

pith:2002:VZ4GGN2IESBAIY3JQ5UBZ6RDEM

not attested not anchored not stored refs pending

Past and future evolution of Sakurai's object

BC, Canada), Falk Herwig (University of Victoria, Victoria

arxiv:astro-ph/0202142 v1 · 2002-02-06 · 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{VZ4GGN2IESBAIY3JQ5UBZ6RDEM}

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	2026-05-18T01:07:45.100751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae78633748248204636987681cfa232334923683c7313120e49b287c44e086fa

Aliases

arxiv: astro-ph/0202142 · arxiv_version: astro-ph/0202142v1 · doi: 10.48550/arxiv.astro-ph/0202142 · pith_short_12: VZ4GGN2IESBA · pith_short_16: VZ4GGN2IESBAIY3J · pith_short_8: VZ4GGN2I

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/VZ4GGN2IESBAIY3JQ5UBZ6RDEM \
  | 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: ae78633748248204636987681cfa232334923683c7313120e49b287c44e086fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b095b56fecdf48bacfc4b5dcffa2aeba92958512f642940ac2c9882190e70c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-06T23:41:22Z",
    "title_canon_sha256": "1f541b8bd4a04b7b66bbbf4e20c33352785e5ff1f04e32aaa5de5cc728585f9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202142",
    "kind": "arxiv",
    "version": 1
  }
}