Pith Number

pith:DY2NPUGA

pith:2009:DY2NPUGAK3YMP243LYGXEJBVDM

not attested not anchored not stored refs pending

Properties of dusty tori in active galactic nuclei - II. Type 2 AGN

(2) INAF/Astronomical Observatory of Padova, (3) IPAC, Caltech, Evanthia Hatziminaoglou (1), Garching, Germany, Italy, Jacopo Fritz (2), Tom Jarrett (3) ((1) ESO, USA)

arxiv:0907.2389 v1 · 2009-07-14 · 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{DY2NPUGAK3YMP243LYGXEJBVDM}

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	2026-05-18T02:13:03.142005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e34d7d0c056f0c7eb9b5e0d7224351b209a5debd92414b60332875d3cbc90fc

Aliases

arxiv: 0907.2389 · arxiv_version: 0907.2389v1 · doi: 10.48550/arxiv.0907.2389 · pith_short_12: DY2NPUGAK3YM · pith_short_16: DY2NPUGAK3YMP243 · pith_short_8: DY2NPUGA

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/DY2NPUGAK3YMP243LYGXEJBVDM \
  | 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: 1e34d7d0c056f0c7eb9b5e0d7224351b209a5debd92414b60332875d3cbc90fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d91247fbce86d470cd0ef8074d02cb5db22e8e173ffe8a282b4169adbf3089b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-14T15:45:44Z",
    "title_canon_sha256": "1e49e17dfcffdc561cf2bbbf90a9091501258a0d28ae645b8c6520367df1458c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2389",
    "kind": "arxiv",
    "version": 1
  }
}