Pith Number

pith:L4WOMXYB

pith:2025:L4WOMXYBKPMSSIFHS4UOLLKWBD

not attested not anchored not stored refs pending

Efficient Privacy-Preserving Recommendation on Sparse Data using Fully Homomorphic Encryption

Andr\'e Bauer, Minxuan Zhou, Moontaha Nishat Chowdhury

arxiv:2509.03024 v1 · 2025-09-03 · cs.CR · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4WOMXYBKPMSSIFHS4UOLLKWBD}

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	2026-07-05T12:04:02.096510Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f2ce65f0153d92920a79728e5ad5608ead79cc1eff87cfc68671bf7e601a50d

Aliases

arxiv: 2509.03024 · arxiv_version: 2509.03024v1 · doi: 10.48550/arxiv.2509.03024 · pith_short_12: L4WOMXYBKPMS · pith_short_16: L4WOMXYBKPMSSIFH · pith_short_8: L4WOMXYB

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/L4WOMXYBKPMSSIFHS4UOLLKWBD \
  | 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: 5f2ce65f0153d92920a79728e5ad5608ead79cc1eff87cfc68671bf7e601a50d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "955bb80053107f3ac1c357c77d9a6fff967918f3ba5732c656c6c159b3e0c13b",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-09-03T05:15:45Z",
    "title_canon_sha256": "aee337a2b5b2a42d9c8614e103b6af2df988ba65c397f928678c8e5dabab073d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.03024",
    "kind": "arxiv",
    "version": 1
  }
}