Pith Number

pith:LZN4QRH7

pith:2020:LZN4QRH7BVHUIR72PBDMNEXPRV

not attested not anchored not stored refs pending

COVID-19 causes record decline in global CO2 emissions

Bin Chen, Biqing Zhu, Bo Zheng, Chenxi Lu, Chongqing Kang, Dabo Guan, Daniel M. Kammen, Duo Cui, Eulalie Boucher, Fengming Xi, Fran\c{c}ois Marie, Frederic Chevallier, Haiwang Zhong, Hans Joachim Schellnhuber, Hao Zhou, Jinjun Xue, Kebin He, Ning Zhang, Olivier Boucher, Pan He, Peng Gong, Philippe Ciais, Piyu Ke, Qiang Zhang, Ruixue Lei, Runtao Guo, Sha Feng, Steven J. Davis, Taochun Sun, Tingxuan Han, Xinyu Dou, Xu Yue, Yadong Lei, Yilong Wang, Yimin Wei, Yuan Wang, Yuhui Wu, Zhaonan Cai, Zhu Deng, Zhu Liu

arxiv:2004.13614 v3 · 2020-04-28 · econ.GN · physics.geo-ph · physics.soc-ph · q-fin.EC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LZN4QRH7BVHUIR72PBDMNEXPRV}

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	2026-07-05T04:41:08.796409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e5bc844ff0d4f4447fa7846c692ef8d52fae7407bf1ec41a1d7a587fe9fedae

Aliases

arxiv: 2004.13614 · arxiv_version: 2004.13614v3 · doi: 10.48550/arxiv.2004.13614 · pith_short_12: LZN4QRH7BVHU · pith_short_16: LZN4QRH7BVHUIR72 · pith_short_8: LZN4QRH7

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/LZN4QRH7BVHUIR72PBDMNEXPRV \
  | 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: 5e5bc844ff0d4f4447fa7846c692ef8d52fae7407bf1ec41a1d7a587fe9fedae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32f22694cb78e1d7bceb82b1d86022c89d34571523dbffc1737d1f4194f6eb74",
    "cross_cats_sorted": [
      "physics.geo-ph",
      "physics.soc-ph",
      "q-fin.EC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.GN",
    "submitted_at": "2020-04-28T15:48:56Z",
    "title_canon_sha256": "1976bd916fca98cf9fdc8eddb08d3701f6a4461dc810345ab7750c373a8f129b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.13614",
    "kind": "arxiv",
    "version": 3
  }
}