Pith Number

pith:T4PGJBBS

pith:2026:T4PGJBBSV4IM7KI2Y4RSTUQQXW

not attested not anchored not stored refs pending

Proofs of Ownership for Machine Learning Models

Or Zamir, Ran Canetti, Shafi Goldwasser

arxiv:2606.30423 v1 · 2026-06-29 · cs.LG · 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{T4PGJBBSV4IM7KI2Y4RSTUQQXW}

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	2026-06-30T02:18:14.723682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f1e648432af10cfa91ac72329d210bd9964494d1e81e040101fd286206ba6ad

Aliases

arxiv: 2606.30423 · arxiv_version: 2606.30423v1 · doi: 10.48550/arxiv.2606.30423 · pith_short_12: T4PGJBBSV4IM · pith_short_16: T4PGJBBSV4IM7KI2 · pith_short_8: T4PGJBBS

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/T4PGJBBSV4IM7KI2Y4RSTUQQXW \
  | 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: 9f1e648432af10cfa91ac72329d210bd9964494d1e81e040101fd286206ba6ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c5fa079be6e621e383f49b4823d052efc47740b4fd6cf82d5054775b1d2a27e",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-29T15:07:00Z",
    "title_canon_sha256": "f30690758d5beba2062dda1259a71e7277a38be09e9617bbcfaa0e9165286bc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.30423",
    "kind": "arxiv",
    "version": 1
  }
}