Pith Number

pith:TUZ25BEJ

pith:2012:TUZ25BEJJP5YGL6HCQLWU3AITU

not attested not anchored not stored refs pending

The Price of Privacy in Untrusted Recommendation Engines

Laurent Massouli\'e, Nidhi Hegde, Siddhartha Banerjee

arxiv:1207.3269 v2 · 2012-07-13 · cs.LG · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TUZ25BEJJP5YGL6HCQLWU3AITU}

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	2026-05-18T02:39:17.370418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d33ae84894bfb832fc714176a6c089d0873e6f252b9fcbcb373d89daa2e3359

Aliases

arxiv: 1207.3269 · arxiv_version: 1207.3269v2 · doi: 10.48550/arxiv.1207.3269 · pith_short_12: TUZ25BEJJP5Y · pith_short_16: TUZ25BEJJP5YGL6H · pith_short_8: TUZ25BEJ

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/TUZ25BEJJP5YGL6HCQLWU3AITU \
  | 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: 9d33ae84894bfb832fc714176a6c089d0873e6f252b9fcbcb373d89daa2e3359

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3d1688c0b3a29583809ab3a97a7bfb448efa30f3c1d308caacf90c3f7390ae0",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-07-13T14:56:38Z",
    "title_canon_sha256": "7eefa2f3ad194b6a46043991994de18cc45003725c7e4c204184cf8e0d0cc7b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3269",
    "kind": "arxiv",
    "version": 2
  }
}