Pith Number

pith:WHJWLJSX

pith:2000:WHJWLJSX4H3UXDPTLKXY3XEYKY

not attested not anchored not stored refs pending

The Elusive Active Nucleus of NGC 4945

(2) Sterrewacht Leiden, (3) Space Telescope Science Institute, (4) European Southern Observatory), A.F.M. Moorwood (4) ((1) Osservatorio Astrofisico di Arcetri, A. Marconi (1), E.J. Schreier (3), E. Oliva (1), F. Macchetto (3), P.P. van der Werf (2), R. Maiolino (1)

arxiv:astro-ph/0002244 v1 · 2000-02-11 · 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{WHJWLJSX4H3UXDPTLKXY3XEYKY}

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.

Cited by

1 paper in Pith

Revisiting Disk Winds in Active Galactic Nuclei as an Origin of Cosmic Gamma-ray and Neutrino Backgrounds

Receipt and verification

First computed	2026-07-04T14:10:10.509271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1d365a657e1f74b8df35aaf8ddc985629d2eb47d65360a0112ceda9355c1b98

Aliases

arxiv: astro-ph/0002244 · arxiv_version: astro-ph/0002244v1 · doi: 10.48550/arxiv.astro-ph/0002244 · pith_short_12: WHJWLJSX4H3U · pith_short_16: WHJWLJSX4H3UXDPT · pith_short_8: WHJWLJSX

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/WHJWLJSX4H3UXDPTLKXY3XEYKY \
  | 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: b1d365a657e1f74b8df35aaf8ddc985629d2eb47d65360a0112ceda9355c1b98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f677937ad424356ea1150faba6463ca59c4e0701a176c02f80a65b21bb02ea2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-11T09:20:04Z",
    "title_canon_sha256": "17553477d5b23d64708e7af7304069277e7a763402e258f3bc47ef5e8a51481c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002244",
    "kind": "arxiv",
    "version": 1
  }
}