Pith Number

pith:WTOQMU7N

pith:2022:WTOQMU7NRNJIJFAXVB6C4QXVKO

not attested not anchored not stored refs pending

Efficiency Boosting of Secure Cross-platform Recommender Systems over Sparse Data

Guowen Xu, Hao Ren, Hongwei Li, Jianting Ning, Rongxing Lu, Tianwei Zhang, Xinyi Huang

arxiv:2212.01537 v1 · 2022-12-03 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTOQMU7NRNJIJFAXVB6C4QXVKO}

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	2026-07-05T05:21:56.110440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4dd0653ed8b52849417a87c2e42f553a9d78c19b020ec06444c022d0bf4a667

Aliases

arxiv: 2212.01537 · arxiv_version: 2212.01537v1 · doi: 10.48550/arxiv.2212.01537 · pith_short_12: WTOQMU7NRNJI · pith_short_16: WTOQMU7NRNJIJFAX · pith_short_8: WTOQMU7N

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/WTOQMU7NRNJIJFAXVB6C4QXVKO \
  | 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: b4dd0653ed8b52849417a87c2e42f553a9d78c19b020ec06444c022d0bf4a667

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54bc8de82364afdaf24c1fdbc99e47333c314da0cf7e0221ddadbc14a02a0ba7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2022-12-03T05:10:13Z",
    "title_canon_sha256": "42d0a60192d978022a3a560fbb6147a1ae0359456fcfeca22d52ff6a9abb1d32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.01537",
    "kind": "arxiv",
    "version": 1
  }
}