Pith Number

pith:K3A4HH73

pith:2026:K3A4HH73JLVQBYEKLCXLAO2UP4

not attested not anchored not stored refs pending

Revealing the Physical Driver of the Baldwin Effect: Gas Density in the Broad-Line Region

Cheng-Feng Peng, Dong-Li Jiang, Rui-Jing Lu, Shao-Hua Zhang, Wen-Qiang Liang, Xi-Heng Shi, Yi-Qi Chen, Zhe-Geng Chen, Zhi-Fu Chen, Zhi-Qing Chen, Zhi-Wen Wang

arxiv:2607.27860 v1 · 2026-07-30 · 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{K3A4HH73JLVQBYEKLCXLAO2UP4}

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	2026-07-31T01:34:30.383091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

56c1c39ffb4aeb00e08a58aeb03b547f1efbb627224a075e55bd7d34c685599b

Aliases

arxiv: 2607.27860 · arxiv_version: 2607.27860v1 · doi: 10.48550/arxiv.2607.27860 · pith_short_12: K3A4HH73JLVQ · pith_short_16: K3A4HH73JLVQBYEK · pith_short_8: K3A4HH73

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/K3A4HH73JLVQBYEKLCXLAO2UP4 \
  | 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: 56c1c39ffb4aeb00e08a58aeb03b547f1efbb627224a075e55bd7d34c685599b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "895363d14626e02459f6db7baaa4663d300d17b4abeeeaf8eeea571be96e92f4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-07-30T08:36:53Z",
    "title_canon_sha256": "dffba788f069ef82fe4e41293abb4f031090121e7e656c96fd7ce8782847c726"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.27860",
    "kind": "arxiv",
    "version": 1
  }
}