Pith Number

pith:BA7SWYRO

pith:2020:BA7SWYROB2KOEVLMX56LMNBALA

not attested not anchored not stored refs pending

Natural gas shortages during the "coal-to-gas" transition in China have caused a large redistribution of air pollution

Bo Zheng, Chuchu Chen, David G. Streets, Gregory R. Carmichael, Hang Su, Jos Lelieveld, Siwen Wang, Ulrich P\"oschl, Wei Tao, Yafang Cheng, Zifeng Lu

arxiv:2004.09585 v1 · 2020-04-20 · physics.ao-ph · physics.geo-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{BA7SWYROB2KOEVLMX56LMNBALA}

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	2026-07-05T01:53:49.625105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

083f2b622e0e94e2556cbf7cb6342058084b583dc46b82027cd9692bc2f5b144

Aliases

arxiv: 2004.09585 · arxiv_version: 2004.09585v1 · doi: 10.48550/arxiv.2004.09585 · pith_short_12: BA7SWYROB2KO · pith_short_16: BA7SWYROB2KOEVLM · pith_short_8: BA7SWYRO

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/BA7SWYROB2KOEVLMX56LMNBALA \
  | 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: 083f2b622e0e94e2556cbf7cb6342058084b583dc46b82027cd9692bc2f5b144

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ac603fc6f3aa5983568d4a58ad49e6ed6a8c2bbf1914a3502efbe616e7c9d21",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2020-04-20T19:24:13Z",
    "title_canon_sha256": "724a57f78c2738126435271cfe26ff74ce41ac940cec0e736492c4746780763c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.09585",
    "kind": "arxiv",
    "version": 1
  }
}