Pith Number

pith:SFVLXHQJ

pith:2002:SFVLXHQJDK75PFVKGW4TP3UW2H

not attested not anchored not stored refs pending

The nature of the "Composite" Seyfert/Star-forming Galaxies

A. Wolter, F. Panessa, G.G.C. Palumbo, G. Trincheri, L. Bassani, M. Cappi, M. Dadina, R. Della Ceca, S. Pellegrini

arxiv:astro-ph/0212322 v2 · 2002-12-13 · 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{SFVLXHQJDK75PFVKGW4TP3UW2H}

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	2026-07-04T14:12:30.540804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

916abb9e091abfd796aa35b937ee96d1ed51ca7d519d34c65de313d37ba766e2

Aliases

arxiv: astro-ph/0212322 · arxiv_version: astro-ph/0212322v2 · doi: 10.48550/arxiv.astro-ph/0212322 · pith_short_12: SFVLXHQJDK75 · pith_short_16: SFVLXHQJDK75PFVK · pith_short_8: SFVLXHQJ

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/SFVLXHQJDK75PFVKGW4TP3UW2H \
  | 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: 916abb9e091abfd796aa35b937ee96d1ed51ca7d519d34c65de313d37ba766e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "754b30f8324a68adbd45b2509f95c18003c350ad9257c8c1fa8a6b56be224189",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-13T15:03:27Z",
    "title_canon_sha256": "f7cfe608d5c87ed28d1f2c9872ff424db395ffb8cc55a82e95b6b74a5db8d296"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212322",
    "kind": "arxiv",
    "version": 2
  }
}