Pith Number

pith:LF7TPUCO

pith:1999:LF7TPUCOY23BITSVDTDBZ4N2OX

not attested not anchored not stored refs pending

BeppoSAX observations of Mkn 3: Piercing through the torus of a Seyfert 2 galaxy

A.C. Fabian, A. Comastri, Bologna), D. Dal Fiume, F. Frontera, G. Di Cocco, G.G.C. Palumbo, G. Malaguti, G. Matt, L. Bassani, L. Piro, M. Cappi (Istituto TeSRE-CNR, M. Dadina, M. Guainazzi, M. Trifoglio, N. Zhang, P. Blanco, R. Maiolino, T. Maccacaro

arxiv:astro-ph/9902022 v1 · 1999-02-01 · 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{LF7TPUCOY23BITSVDTDBZ4N2OX}

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	2026-07-04T14:16:32.152604Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

597f37d04ec6b6144e551cc61cf1ba75cdb3f23eabfc8e76071e5076c3c96c65

Aliases

arxiv: astro-ph/9902022 · arxiv_version: astro-ph/9902022v1 · doi: 10.48550/arxiv.astro-ph/9902022 · pith_short_12: LF7TPUCOY23B · pith_short_16: LF7TPUCOY23BITSV · pith_short_8: LF7TPUCO

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/LF7TPUCOY23BITSVDTDBZ4N2OX \
  | 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: 597f37d04ec6b6144e551cc61cf1ba75cdb3f23eabfc8e76071e5076c3c96c65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39b85aacb8d953b706a3a7cef9edfb9ca150e676e3ed9f7c832885b4df431df6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-01T17:38:13Z",
    "title_canon_sha256": "958387ffeb1df3bf82127b6dba35e2ee539b4c28f3cba7b09ea6bf428d18757e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902022",
    "kind": "arxiv",
    "version": 1
  }
}