Pith Number

pith:T2L3JF7A

pith:1999:T2L3JF7A4LORGUIQMCXE2S6FZ2

not attested not anchored not stored refs pending

The BeppoSAX X-ray view of reflection-dominated Seyfert Galaxies

F.Fiore (3) ((1) Astrophysics Division, G.Matt (2), I), I; (3) Osservatorio Astronomico di Roma, M.Guainazzi (1), Monteporzio Catone, NL; (2) Universita' Roma 3, Noordwijk, SSD of ESA

arxiv:astro-ph/9902322 v1 · 1999-02-23 · 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{T2L3JF7A4LORGUIQMCXE2S6FZ2}

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	2026-07-04T16:10:44.024064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e97b497e0e2dd13511060ae4d4bc5ce8b2d6997dbbf29ee9d82832bb88cdee5

Aliases

arxiv: astro-ph/9902322 · arxiv_version: astro-ph/9902322v1 · doi: 10.48550/arxiv.astro-ph/9902322 · pith_short_12: T2L3JF7A4LOR · pith_short_16: T2L3JF7A4LORGUIQ · pith_short_8: T2L3JF7A

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/T2L3JF7A4LORGUIQMCXE2S6FZ2 \
  | 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: 9e97b497e0e2dd13511060ae4d4bc5ce8b2d6997dbbf29ee9d82832bb88cdee5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fa6c9d755b89a6a7eeb0c5f51bba190eb98d4aeb374ad189cd7da270b8ff2cb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-23T10:56:14Z",
    "title_canon_sha256": "05b7c2d5ba4c0b9a5b8a3d1234764f0cad28d44170a57fbcdf34ceeedd5e687a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902322",
    "kind": "arxiv",
    "version": 1
  }
}