Pith Number

pith:XDZN6GVU

pith:2020:XDZN6GVUVZZ3WSRURX6GN7CFTX

not attested not anchored not stored refs pending

Syndromic surveillance using search query logs and user location information from smartphones against COVID-19 clusters in Japan

Eiji Aramaki, Kota Tsubouchi, Shohei Hisada, Shoko Wakamiya, Shuntaro Yada, Sumio Fujita, Taichi Murayama

arxiv:2004.10100 v1 · 2020-04-21 · cs.IR · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XDZN6GVUVZZ3WSRURX6GN7CFTX}

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	2026-07-05T04:40:22.127638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8f2df1ab4ae73bb4a348dfc66fc459dd6b527c226ca182d4c009b60613fe50a

Aliases

arxiv: 2004.10100 · arxiv_version: 2004.10100v1 · doi: 10.48550/arxiv.2004.10100 · pith_short_12: XDZN6GVUVZZ3 · pith_short_16: XDZN6GVUVZZ3WSRU · pith_short_8: XDZN6GVU

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/XDZN6GVUVZZ3WSRURX6GN7CFTX \
  | 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: b8f2df1ab4ae73bb4a348dfc66fc459dd6b527c226ca182d4c009b60613fe50a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0b5a6c95d6084770c202a3015fddf9a2cbbe5d5cc65990fcd527fe01272bf72",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-04-21T15:21:30Z",
    "title_canon_sha256": "e029bfb24c5001f276831dbcd345a9ad1a7e34f0307012258b8b0700fa821b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.10100",
    "kind": "arxiv",
    "version": 1
  }
}