Pith Number

pith:V6WV5GQD

pith:2008:V6WV5GQDZW4G6DODIMVDADO5US

not attested not anchored not stored refs pending

The Hard X-ray Spectrum as a Probe for Black-Hole Growth in Radio-Quiet Active Galactic Nuclei

(2) Tel Aviv U., (3) INAF - Roma, 4) ((1) PSU, (4) Technion), Hagai Netzer (2), Ohad Shemmer (1), Roberto Maiolino (3), Shai Kaspi (2, W.N. Brandt (1)

arxiv:0804.0803 v1 · 2008-04-04 · 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{V6WV5GQDZW4G6DODIMVDADO5US}

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

Unification models of Active Galactic Nuclei

Receipt and verification

First computed	2026-07-04T17:10:13.190424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

afad5e9a03cdb86f0dc3432a300ddda49906c3a39cf8ed2748be080f95be7c0b

Aliases

arxiv: 0804.0803 · arxiv_version: 0804.0803v1 · doi: 10.48550/arxiv.0804.0803 · pith_short_12: V6WV5GQDZW4G · pith_short_16: V6WV5GQDZW4G6DOD · pith_short_8: V6WV5GQD

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/V6WV5GQDZW4G6DODIMVDADO5US \
  | 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: afad5e9a03cdb86f0dc3432a300ddda49906c3a39cf8ed2748be080f95be7c0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "822b3eab1834b9235d0cf320e4a9ebcb46f83594f1ae3a50ab9059e8a7bd5abc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-04T20:04:07Z",
    "title_canon_sha256": "81dfc4110b2471c32770ea3cc1a018da1c86500c9525b7c311ac910ab584a143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.0803",
    "kind": "arxiv",
    "version": 1
  }
}