Pith Number

pith:XFIHRPTH

pith:2019:XFIHRPTHNCDBFJ7RVCG6LSHBWB

not attested not anchored not stored refs pending

Chinese cities' air quality pattern and correlation

Jianyao Li, Weibing Deng, Wei Li, Wenjun Zhang, Zhanpeng Guan, Zhu Su

arxiv:1911.01845 v2 · 2019-11-04 · physics.soc-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{XFIHRPTHNCDBFJ7RVCG6LSHBWB}

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	2026-07-05T01:12:27.021915Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b95078be67688612a7f1a88de5c8e1b07f7b171fa93bf74eee0ddd790ef84173

Aliases

arxiv: 1911.01845 · arxiv_version: 1911.01845v2 · doi: 10.48550/arxiv.1911.01845 · pith_short_12: XFIHRPTHNCDB · pith_short_16: XFIHRPTHNCDBFJ7R · pith_short_8: XFIHRPTH

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/XFIHRPTHNCDBFJ7RVCG6LSHBWB \
  | 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: b95078be67688612a7f1a88de5c8e1b07f7b171fa93bf74eee0ddd790ef84173

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1951d068d8f4b6c0ab6b22e99ca87763d444e8c7a2a32af055025aceeab1848f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2019-11-04T04:04:34Z",
    "title_canon_sha256": "6877abbb2e18bd9f67d0b437cfb5abb39a04885b824a06ad38506893231e4229"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.01845",
    "kind": "arxiv",
    "version": 2
  }
}