Pith Number

pith:VSR3SC2T

pith:2020:VSR3SC2THYNKNZY5BBTP546JDD

not attested not anchored not stored refs pending

Taking the pulse of COVID-19: A spatiotemporal perspective

Chaowei Yang, Cheng Zhong, Chunbo Liu, Colin Flynn, David Wong, Dexuan Sha, Dieter Pfoser, Douglas Richardson, Fayez Beaini, Hai Lan, Haoyuan Zhang, Huan Zhou, Jie Jiang, John Hoot Thompson, Kyla Carte, Liang Zhao, Lin Li, Luyao Zhang, Manzhu Yu, Mei Li, Mingyue Lu, Qian Liu, Ruizhi Hou, Shihong Du, Shiyang Ruan, Shuming Bao, Tao Hu, Weihe Wendy Guan, Wei Liu, Yifei Tian, You Zhou, Yun Li, Zhenlong Li, Zhiran Zhang, Zifu Wang

arxiv:2005.04224 v1 · 2020-05-08 · physics.soc-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VSR3SC2THYNKNZY5BBTP546JDD}

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	2026-07-05T01:30:41.366708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aca3b90b533e1aa6e71d0866fef3c918cb01f3207d9417cd123ad6f3420547bb

Aliases

arxiv: 2005.04224 · arxiv_version: 2005.04224v1 · doi: 10.48550/arxiv.2005.04224 · pith_short_12: VSR3SC2THYNK · pith_short_16: VSR3SC2THYNKNZY5 · pith_short_8: VSR3SC2T

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/VSR3SC2THYNKNZY5BBTP546JDD \
  | 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: aca3b90b533e1aa6e71d0866fef3c918cb01f3207d9417cd123ad6f3420547bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e2f147e40b2ddbd9c8ef6840f9d55e94765b8f85101a5027a2575be15c28501",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2020-05-08T21:40:09Z",
    "title_canon_sha256": "f202aa524f2f1c7b5ca51b2533ce55b6ce366827e5836373f9aa9d1690072a71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.04224",
    "kind": "arxiv",
    "version": 1
  }
}