Pith Number

pith:JF3CD3SP

pith:2021:JF3CD3SP6KBBWKE3TDMV3UBBQV

not attested not anchored not stored refs pending

Privacy-Preserving Batch-based Task Assignment in Spatial Crowdsourcing with Untrusted Server

Han Wu, Jiachuan Wang, Lei Chen, Libin Zheng, Maocheng Li, Peng Cheng, Xuemin Lin

arxiv:2108.09019 v2 · 2021-08-20 · cs.CR · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JF3CD3SP6KBBWKE3TDMV3UBBQV}

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	2026-07-05T03:07:53.203411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

497621ee4ff2821b289b98d95dd021854a557e1a29a0cb47069509303bf1e6ac

Aliases

arxiv: 2108.09019 · arxiv_version: 2108.09019v2 · doi: 10.48550/arxiv.2108.09019 · pith_short_12: JF3CD3SP6KBB · pith_short_16: JF3CD3SP6KBBWKE3 · pith_short_8: JF3CD3SP

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/JF3CD3SP6KBBWKE3TDMV3UBBQV \
  | 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: 497621ee4ff2821b289b98d95dd021854a557e1a29a0cb47069509303bf1e6ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97a3d5f1a0e123480db2a8a2ddcfe54d579dc4ec7cebb93c624bdab07df2c1ec",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2021-08-20T06:15:54Z",
    "title_canon_sha256": "3f7ff370ea5a6fbc6b1ac3e8fe5eed078b31b807c8b2ac925017a6a0b47c2aae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.09019",
    "kind": "arxiv",
    "version": 2
  }
}