Pith Number

pith:XFL5KGGI

pith:2010:XFL5KGGIT23NRAEHNAI7SASRAB

not attested not anchored not stored refs pending

The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei

1), 2), (2) Carnegie Observatories, (3) Yunnan Observatory, (4) U. of Arizona ), China, Hongyan Zhou (1) ( (1) Univ. of Sci. & Tech. of China, Huiyuan Wang (1), Jian-Guo Wang (3, Luis C. Ho (2), Ting-Gui Wang (1), Xiao-Bo Dong (1, Xiaohui Fan (4)

arxiv:1009.2209 v1 · 2010-09-12 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFL5KGGIT23NRAEHNAI7SASRAB}

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	2026-05-18T04:41:04.587851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b957d518c89eb6d880876811f902510062d498c5abaf487c78f550fb5db82722

Aliases

arxiv: 1009.2209 · arxiv_version: 1009.2209v1 · doi: 10.48550/arxiv.1009.2209 · pith_short_12: XFL5KGGIT23N · pith_short_16: XFL5KGGIT23NRAEH · pith_short_8: XFL5KGGI

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/XFL5KGGIT23NRAEHNAI7SASRAB \
  | 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: b957d518c89eb6d880876811f902510062d498c5abaf487c78f550fb5db82722

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70411a41eabf04b9db4714c0de97f7494fce02c60f065a6ead50b6992dbc7755",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-09-12T01:08:07Z",
    "title_canon_sha256": "7eeed7f7e1bcacc02d883424302a6d2a9fc7b6bccb0cadc8bed468cb53b9976a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2209",
    "kind": "arxiv",
    "version": 1
  }
}