Pith Number

pith:U4VNZ3RD

pith:2020:U4VNZ3RDV44ZMXGH5OQ2FSDSC5

not attested not anchored not stored refs pending

Understanding Changes in Travel Patterns during the COVID-19 Outbreak in the Three Major Metropolitan Areas of Japan

Daisuke Fukuda, Kashin Sugishita, Takao Dantsuji

arxiv:2012.13139 v1 · 2020-12-24 · 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{U4VNZ3RDV44ZMXGH5OQ2FSDSC5}

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	2026-07-05T02:01:55.775252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a72adcee23af39965cc7eba1a2c87217410417c394883dfc37d85a9401bc1fc4

Aliases

arxiv: 2012.13139 · arxiv_version: 2012.13139v1 · doi: 10.48550/arxiv.2012.13139 · pith_short_12: U4VNZ3RDV44Z · pith_short_16: U4VNZ3RDV44ZMXGH · pith_short_8: U4VNZ3RD

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/U4VNZ3RDV44ZMXGH5OQ2FSDSC5 \
  | 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: a72adcee23af39965cc7eba1a2c87217410417c394883dfc37d85a9401bc1fc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64f3cf11b447e5b2a411cadfb69774f728f1d855a6298e2f549d15621bcad7f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2020-12-24T06:43:18Z",
    "title_canon_sha256": "7c148ececc852c4419c5df003ef183e626bb72b3d2dce71e235d9085fe440ac9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.13139",
    "kind": "arxiv",
    "version": 1
  }
}