Pith Number

pith:LHI5VLKQ

pith:2007:LHI5VLKQ3JMIT5BC7UKM7TJR7G

not attested not anchored not stored refs pending

Mid-Infrared Fine Structure Line Ratios in Active Galactic Nuclei Observed with Spitzer IRS: Evidence for Extinction by the Torus

B. O'Halloran, C. C. Dudley, J. C. Weingartner, J. Fischer, R. P. Dudik, S. Satyapal

arxiv:0704.0547 v2 · 2007-04-04 · 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{LHI5VLKQ3JMIT5BC7UKM7TJR7G}

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	2026-07-04T15:44:56.517682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59d1daad50da5889f422fd14cfcd31f98a64b60cb236bca763edccc8c7000c5c

Aliases

arxiv: 0704.0547 · arxiv_version: 0704.0547v2 · doi: 10.48550/arxiv.0704.0547 · pith_short_12: LHI5VLKQ3JMI · pith_short_16: LHI5VLKQ3JMIT5BC · pith_short_8: LHI5VLKQ

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/LHI5VLKQ3JMIT5BC7UKM7TJR7G \
  | 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: 59d1daad50da5889f422fd14cfcd31f98a64b60cb236bca763edccc8c7000c5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfdd4e45bfc453278f6e98f9d92c79462094cf645f5e36eb65cd5dc820355f60",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-04T19:56:35Z",
    "title_canon_sha256": "3faa59bcfe9f703f10ea2cc3b8bef351380f5e1bd382f1f8ae053f1508776f64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.0547",
    "kind": "arxiv",
    "version": 2
  }
}