Pith Number

pith:IMIACCI7

pith:2020:IMIACCI7HGXL6BJ3HUINDTVMU3

not attested not anchored not stored refs pending

Metadata-Based Detection of Child Sexual Abuse Material

Hyrum Anderson, Mayana Pereira, Rahul Dodhia, Richard Brown

arxiv:2010.02387 v2 · 2020-10-05 · cs.LG · cs.CR · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IMIACCI7HGXL6BJ3HUINDTVMU3}

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	2026-07-05T03:26:37.419109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

431001091f39aebf053b3d10d1ceaca6f2aa47bea8709f48aef13934e2ed3064

Aliases

arxiv: 2010.02387 · arxiv_version: 2010.02387v2 · doi: 10.48550/arxiv.2010.02387 · pith_short_12: IMIACCI7HGXL · pith_short_16: IMIACCI7HGXL6BJ3 · pith_short_8: IMIACCI7

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/IMIACCI7HGXL6BJ3HUINDTVMU3 \
  | 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: 431001091f39aebf053b3d10d1ceaca6f2aa47bea8709f48aef13934e2ed3064

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "390480cc210b0d31130c02e12666b7bd4bb0e71d73918b1753fcf9eac9e26f0f",
    "cross_cats_sorted": [
      "cs.CR",
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-10-05T23:10:21Z",
    "title_canon_sha256": "845b0a926e00048741f1e09b94e4e9eb93230fb42e4a44647bf1342eddfb14bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.02387",
    "kind": "arxiv",
    "version": 2
  }
}