Pith Number

pith:BUUZA44Y

pith:2023:BUUZA44YHXYD3X3QQLGDX7PGVX

not attested not anchored not stored refs pending

Accurate and Efficient Trajectory-based Contact Tracing with Secure Computation and Geo-Indistinguishability

Lei Chen, Libin Zheng, Maocheng Li, Qing Li, Yuxiang Zeng

arxiv:2303.02838 v1 · 2023-03-06 · cs.DB · 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{BUUZA44YHXYD3X3QQLGDX7PGVX}

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	2026-07-05T05:48:15.951078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d299073983df03ddf7082cc3bfde6adea8618f9b59eb96812d03ee62d364684

Aliases

arxiv: 2303.02838 · arxiv_version: 2303.02838v1 · doi: 10.48550/arxiv.2303.02838 · pith_short_12: BUUZA44YHXYD · pith_short_16: BUUZA44YHXYD3X3Q · pith_short_8: BUUZA44Y

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/BUUZA44YHXYD3X3QQLGDX7PGVX \
  | 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: 0d299073983df03ddf7082cc3bfde6adea8618f9b59eb96812d03ee62d364684

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5143ef21b0a80aa8fdbd2fe55900e8722df114f40a43a1f6c401f59698d0fd73",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2023-03-06T02:17:38Z",
    "title_canon_sha256": "45ecb6234829754d7992b7d296ff728837aefceebf9ef60d8570ff5f99dd5090"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.02838",
    "kind": "arxiv",
    "version": 1
  }
}