Pith Number

pith:DV563YFD

pith:2009:DV563YFD43NY7HFPBYFRG2ACFC

not attested not anchored not stored refs pending

An optical spectroscopic survey of the 3CR sample of radio galaxies with z<0.3. II. Spectroscopic classes and accretion modes in radio-loud AGN

(2) INAF - Osservatorio Astronomico di Torino, (3) Rochester Institute of Technology, 4), (4) University of Sussex, (5) Space Telescope Science Institute, 6), Alessandro Capetti (2), Annalisa Celotti (1), Baltimore, Bologna, David J. Axon (3, F. Duccio Macchetto (5), Italy, Italy), Marco Chiaberge (5, Sara Buttiglione (1), Trieste, UK, USA, U.S.A. (6) INAF-Istituto di Radio Astronomia, William B. Sparks (5) ((1) SISSA-ISAS

arxiv:0911.0536 v1 · 2009-11-03 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DV563YFD43NY7HFPBYFRG2ACFC}

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	2026-05-18T02:11:00.274075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d7bede0a3e6db8f9caf0e0b13680228ac0fa3d356bce7f285c873625e98ae7e

Aliases

arxiv: 0911.0536 · arxiv_version: 0911.0536v1 · doi: 10.48550/arxiv.0911.0536 · pith_short_12: DV563YFD43NY · pith_short_16: DV563YFD43NY7HFP · pith_short_8: DV563YFD

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/DV563YFD43NY7HFPBYFRG2ACFC \
  | 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: 1d7bede0a3e6db8f9caf0e0b13680228ac0fa3d356bce7f285c873625e98ae7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d335055e1e48965f2e6cedf66a50892ec6efaa11daa95e56530ab7982823099",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-03T10:29:42Z",
    "title_canon_sha256": "128877648962093b7c5cf9827b786259fada322119ddfcc0c0d3e5c5aa10e013"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0536",
    "kind": "arxiv",
    "version": 1
  }
}