Pith Number

pith:T2R7R6RI

pith:2020:T2R7R6RINYUVSSHDP2ODNUBLOQ

not attested not anchored not stored refs pending

Spatiotemporal Patterns of COVID-19 Impact on Human Activities and Environment in China Using Nighttime Light and Air Quality Data

Chaowei Yang, Colin Flynn, Dexuan Sha, Hai Lan, Luyao Zhang, Mingyue Lu, Paul Houser, Qian Liu, Ruizhi Hou, Tao Hu, Wei Liu

arxiv:2005.02808 v1 · 2020-05-03 · 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{T2R7R6RINYUVSSHDP2ODNUBLOQ}

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	2026-07-05T01:25:53.680188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ea3f8fa286e295948e37e9c36d02b7421d8cb71cde53e76f7ea1033751ab38d

Aliases

arxiv: 2005.02808 · arxiv_version: 2005.02808v1 · doi: 10.48550/arxiv.2005.02808 · pith_short_12: T2R7R6RINYUV · pith_short_16: T2R7R6RINYUVSSHD · pith_short_8: T2R7R6RI

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/T2R7R6RINYUVSSHDP2ODNUBLOQ \
  | 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: 9ea3f8fa286e295948e37e9c36d02b7421d8cb71cde53e76f7ea1033751ab38d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bf310c496639157c3c959d3efba92b7f96f087f8e103128eea5a2912f90900c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2020-05-03T20:04:54Z",
    "title_canon_sha256": "7c4a6680357e9ec1bb16f4682ebfe7f17d916178c189a3c2070e1f56294d3f97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.02808",
    "kind": "arxiv",
    "version": 1
  }
}