Pith Number

pith:NNEVZF7G

pith:2022:NNEVZF7GZEFP56EE5CEOKC5XV3

not attested not anchored not stored refs pending

Re-purposing Perceptual Hashing based Client Side Scanning for Physical Surveillance

Andrey Labunets, Ashish Hooda, Earlence Fernandes, Tadayoshi Kohno

arxiv:2212.04107 v1 · 2022-12-08 · cs.CR · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNEVZF7GZEFP56EE5CEOKC5XV3}

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.

Cited by

1 paper in Pith

Perceptual Hash Inversion Attacks on Image-Based Sexual Abuse Removal Tools

Receipt and verification

First computed	2026-07-05T05:23:36.485753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b495c97e6c90afef884e888e50bb7aedf4dd9d5b51e2c8f602c33bcfdfd2d2d

Aliases

arxiv: 2212.04107 · arxiv_version: 2212.04107v1 · doi: 10.48550/arxiv.2212.04107 · pith_short_12: NNEVZF7GZEFP · pith_short_16: NNEVZF7GZEFP56EE · pith_short_8: NNEVZF7G

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/NNEVZF7GZEFP56EE5CEOKC5XV3 \
  | 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: 6b495c97e6c90afef884e888e50bb7aedf4dd9d5b51e2c8f602c33bcfdfd2d2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad2d67cdceb6be06ef9d5ae4f471364c95b8d6ddcc10288bc67a05a17d44f419",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2022-12-08T06:52:14Z",
    "title_canon_sha256": "88959d94cb930b2711114b9150a288d419e4f4a9ca36dfd50faaba7144f32302"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.04107",
    "kind": "arxiv",
    "version": 1
  }
}