Pith Number

pith:SJL2WV63

pith:2022:SJL2WV63GIILSDI7QVMQPV73CC

not attested not anchored not stored refs pending

Recombination of hot ionized nebulae: The old planetary nebula around V4334 Sgr (Sakurai's star)

Albert A. Zijlstra, Daniela Barria, Daniel Tafoya, Griet C. Van de Steene, Marcin Hajduk, Martin Reichel, Peter A.M. van Hoof, Stefan Kimeswenger

arxiv:2209.03634 v1 · 2022-09-08 · astro-ph.SR · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SJL2WV63GIILSDI7QVMQPV73CC}

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	2026-07-05T05:16:23.151912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9257ab57db3210b90d1f855907d7fb10b2314b054b60a6875488a6dc51f94ebc

Aliases

arxiv: 2209.03634 · arxiv_version: 2209.03634v1 · doi: 10.48550/arxiv.2209.03634 · pith_short_12: SJL2WV63GIIL · pith_short_16: SJL2WV63GIILSDI7 · pith_short_8: SJL2WV63

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/SJL2WV63GIILSDI7QVMQPV73CC \
  | 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: 9257ab57db3210b90d1f855907d7fb10b2314b054b60a6875488a6dc51f94ebc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4affd69b2152c69024d7ecc2db1bbfb8dd33dc8a31c8133374176002d20b1ca5",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-09-08T08:25:37Z",
    "title_canon_sha256": "212a596513c11381d2e6e9cf957a279b246db2459f5ca8c39b125858733aaa73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.03634",
    "kind": "arxiv",
    "version": 1
  }
}