Pith Number

pith:MXE74IX4

pith:2002:MXE74IX4R6MLKFK7EGFYWXUMUX

not attested not anchored not stored refs pending

Temperature Scale and Iron Abundances of Very Hot Central Stars of Planetary Nebulae

J.L. Deetjen, J.W. Kruk, K. Werner, S. Dreizler, T. Rauch

arxiv:astro-ph/0202012 v1 · 2002-02-01 · 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{MXE74IX4R6MLKFK7EGFYWXUMUX}

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	2026-07-04T14:11:52.255986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65c9fe22fc8f98b5155f218b8b5e8ca5feb7f6b8b6ca7520aa5d9178c816708a

Aliases

arxiv: astro-ph/0202012 · arxiv_version: astro-ph/0202012v1 · doi: 10.48550/arxiv.astro-ph/0202012 · pith_short_12: MXE74IX4R6ML · pith_short_16: MXE74IX4R6MLKFK7 · pith_short_8: MXE74IX4

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/MXE74IX4R6MLKFK7EGFYWXUMUX \
  | 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: 65c9fe22fc8f98b5155f218b8b5e8ca5feb7f6b8b6ca7520aa5d9178c816708a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57b2d37cbabf3d35ad911e9254f3a1564a7a0bf08496cac63ee245f3270bb1c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-01T06:08:19Z",
    "title_canon_sha256": "8bf6ce855a0b7caee4b2059f478f592c043efb6d5436fe6f8750cd03bf74023a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202012",
    "kind": "arxiv",
    "version": 1
  }
}