Pith Number

pith:C34VPZ3P

pith:2022:C34VPZ3PWA3TYE3W54LZ3SUZTB

not attested not anchored not stored refs pending

Towards Privacy-Preserving and Verifiable Federated Matrix Factorization

Anmin Fu, Mang Su, Qun Li, Xicheng Wan, Yansong Gao, Yifeng Zheng

arxiv:2204.01601 v2 · 2022-04-04 · 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{C34VPZ3PWA3TYE3W54LZ3SUZTB}

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	2026-07-05T04:30:55.799886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16f957e76fb0373c1376ef179dca999854e38fb2e1115c81cf34b67b8d4a9fc8

Aliases

arxiv: 2204.01601 · arxiv_version: 2204.01601v2 · doi: 10.48550/arxiv.2204.01601 · pith_short_12: C34VPZ3PWA3T · pith_short_16: C34VPZ3PWA3TYE3W · pith_short_8: C34VPZ3P

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/C34VPZ3PWA3TYE3W54LZ3SUZTB \
  | 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: 16f957e76fb0373c1376ef179dca999854e38fb2e1115c81cf34b67b8d4a9fc8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35274af878891fa40db0ede4d60a56843f7f927bf0da72d935d7fa453ebce7be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2022-04-04T15:57:16Z",
    "title_canon_sha256": "ffa51e7e2c87057fc332c1a9f7dbb4b8681998beb8d139e1ffcb243793dcf2cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.01601",
    "kind": "arxiv",
    "version": 2
  }
}