Pith Number

pith:LQ733NGA

pith:2018:LQ733NGA3LSNTVZOYXXCKWJNJ4

not attested not anchored not stored refs pending

Towards an improvement in the spectral description of central stars of planetary nebulae

C. Fari\~na, D. Mast, E. O. Schmidt, G. Gimeno, I. Ordonez-Etxeberria, L. Peralta de Arriba, P. Sowicka, R. Gamen, R. P. Ashley, W. Weidmann

arxiv:1802.02122 v1 · 2018-02-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LQ733NGA3LSNTVZOYXXCKWJNJ4}

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	2026-05-18T00:11:38.435095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c3fbdb4c0dae4d9d72ec5ee25592d4f2ab1afedd06b8a938b737ab0e61449f2

Aliases

arxiv: 1802.02122 · arxiv_version: 1802.02122v1 · doi: 10.48550/arxiv.1802.02122 · pith_short_12: LQ733NGA3LSN · pith_short_16: LQ733NGA3LSNTVZO · pith_short_8: LQ733NGA

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/LQ733NGA3LSNTVZOYXXCKWJNJ4 \
  | 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: 5c3fbdb4c0dae4d9d72ec5ee25592d4f2ab1afedd06b8a938b737ab0e61449f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed27fe70884eea04aa22593160e1d7918c64c27f2762e9a577f68985b4eb3376",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-06T18:38:55Z",
    "title_canon_sha256": "a8be9fd654dcdb208138cb8e1fafd7c64c3ee7ff23b6748c0f489182f7bd60b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02122",
    "kind": "arxiv",
    "version": 1
  }
}