Pith Number

pith:FEPDSXSQ

pith:2014:FEPDSXSQYJTOTZGN2TYDCNAJJY

not attested not anchored not stored refs pending

UV spectral analysis of very hot H-deficient [WCE]-type central stars of planetary nebulae: NGC 2867, NGC 5189, NGC 6905, Pb 6, and Sand 3

Graziela R. Keller, Luciana Bianchi, Walter J. Maciel

arxiv:1405.6763 v1 · 2014-05-27 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FEPDSXSQYJTOTZGN2TYDCNAJJY}

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	2026-05-18T01:43:06.056126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

291e395e50c266e9e4cdd4f03134094e16385e4ab12d42cc4f80af700606d384

Aliases

arxiv: 1405.6763 · arxiv_version: 1405.6763v1 · doi: 10.48550/arxiv.1405.6763 · pith_short_12: FEPDSXSQYJTO · pith_short_16: FEPDSXSQYJTOTZGN · pith_short_8: FEPDSXSQ

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/FEPDSXSQYJTOTZGN2TYDCNAJJY \
  | 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: 291e395e50c266e9e4cdd4f03134094e16385e4ab12d42cc4f80af700606d384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "105df8e753bb233762c6b75b734f20da7cb54dd7440dfdf37def05125376e828",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-05-27T00:46:42Z",
    "title_canon_sha256": "197cd1d5f65d62d5c00662a5ff47f2e3896f07ba70ccb2be228cb7daae1f1d75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6763",
    "kind": "arxiv",
    "version": 1
  }
}