Pith Number

pith:CSA7BJQK

pith:2008:CSA7BJQKNXCXRTKCOSG7ZRPAKY

not attested not anchored not stored refs pending

Difference in Narrow Emission Line Spectra of Seyfert 1 and 2 galaxies

Honglin Lu, Kai Zhang, Tinggui Wang, Xiaobo Dong

arxiv:0808.3026 v1 · 2008-08-22 · 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{CSA7BJQKNXCXRTKCOSG7ZRPAKY}

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	2026-05-18T04:36:50.513055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e

Aliases

arxiv: 0808.3026 · arxiv_version: 0808.3026v1 · doi: 10.48550/arxiv.0808.3026 · pith_short_12: CSA7BJQKNXCX · pith_short_16: CSA7BJQKNXCXRTKC · pith_short_8: CSA7BJQK

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/CSA7BJQKNXCXRTKCOSG7ZRPAKY \
  | 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: 1481f0a60a6dc578cd42748dfcc5e05600f2ae6d94794500e4efd5e3fbd0436e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77d8ec42614a8d45febd72977cc4d7079b0dccc417877e709709132878d2dd7d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-22T03:11:29Z",
    "title_canon_sha256": "f026071a3a372f2c79211d0042afcf2be20e72be09eb8a5f766bf8eca678ca9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3026",
    "kind": "arxiv",
    "version": 1
  }
}