Pith Number

pith:7UBF6TTE

pith:2007:7UBF6TTE4CMGIN44HH57QKS63V

not attested not anchored not stored refs pending

Central stars of planetary nebulae in the Galactic bulge

A. W. A. Pauldrach, J. K. McCarthy, J. Puls, P. J. N. Hultzsch, R. H. Mendez, R.-P. Kudritzki, T. L. Hoffmann

arxiv:astro-ph/0702755 v2 · 2007-02-28 · 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{7UBF6TTE4CMGIN44HH57QKS63V}

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	2026-07-04T17:07:43.612640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd025f4e64e09864379c39fbf82a5edd7345fe1d3cfcd7d4a14c87752dcb493a

Aliases

arxiv: astro-ph/0702755 · arxiv_version: astro-ph/0702755v2 · doi: 10.48550/arxiv.astro-ph/0702755 · pith_short_12: 7UBF6TTE4CMG · pith_short_16: 7UBF6TTE4CMGIN44 · pith_short_8: 7UBF6TTE

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/7UBF6TTE4CMGIN44HH57QKS63V \
  | 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: fd025f4e64e09864379c39fbf82a5edd7345fe1d3cfcd7d4a14c87752dcb493a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53bc704310992c3c2ebd36284793f1ed6c85f04c1c00610c54c7f087f379a9e2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-28T20:18:43Z",
    "title_canon_sha256": "c22d53c04e8f66d1ca2d69f948802be4463ece298af46ee4ea8e79387917e5bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702755",
    "kind": "arxiv",
    "version": 2
  }
}