Pith Number

pith:KHC7TPEN

pith:2003:KHC7TPENHWCIUO6D544HPA4GSF

not attested not anchored not stored refs pending

XMM-Newton observations expose AGN in apparently normal galaxies

A. Caccianiga, A. Wolter, F.J. Carrera, K. Sekiguchi, M. Akiyama, M. G. Watson, M. Yoshida, N. A. Webb, P. Severgnini, R. Della Ceca, T. Maccacaro, T. Sasaki, V. Braito, W.Pietsch, X. Barcons

arxiv:astro-ph/0304308 v1 · 2003-04-16 · 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{KHC7TPENHWCIUO6D544HPA4GSF}

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	2026-05-18T01:40:39.078888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51c5f9bc8d3d848a3bc3ef38778386917a6d89036fd89ef8b3c9dab5ead1a36a

Aliases

arxiv: astro-ph/0304308 · arxiv_version: astro-ph/0304308v1 · doi: 10.48550/arxiv.astro-ph/0304308 · pith_short_12: KHC7TPENHWCI · pith_short_16: KHC7TPENHWCIUO6D · pith_short_8: KHC7TPEN

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/KHC7TPENHWCIUO6D544HPA4GSF \
  | 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: 51c5f9bc8d3d848a3bc3ef38778386917a6d89036fd89ef8b3c9dab5ead1a36a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df049fd5c4b32bff68b6d98c7ff1b2901793afb154ef947bea0d1acb9e7f3fe6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-04-16T15:52:45Z",
    "title_canon_sha256": "6c50c5358ca86237720b093c97a667c865b4158fb8a8bee1528cf78fb10a2f49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0304308",
    "kind": "arxiv",
    "version": 1
  }
}