Pith Number

pith:F4ICRAFA

pith:2025:F4ICRAFAKETGVHMB4CBWCPKHUI

not attested not anchored not stored refs pending

Hot-Swap MarkBoard: An Efficient Black-box Watermarking Approach for Large-scale Model Distribution

Diandian Guo, Jiang Fang, Jiyan Sun, Liru Geng, Mengke Wan, Peizhuo Lv, Wei Ma, Yezeng Chen, Yinlong Liu, Zhicheng Zhang

arxiv:2507.20650 v1 · 2025-07-28 · cs.CR · cs.AI · 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{F4ICRAFAKETGVHMB4CBWCPKHUI}

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	2026-07-05T11:44:53.896684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f102880a051266a9d81e083613d47a21cb2d769c011a7f50a91d571b04aba90

Aliases

arxiv: 2507.20650 · arxiv_version: 2507.20650v1 · doi: 10.48550/arxiv.2507.20650 · pith_short_12: F4ICRAFAKETG · pith_short_16: F4ICRAFAKETGVHMB · pith_short_8: F4ICRAFA

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/F4ICRAFAKETGVHMB4CBWCPKHUI \
  | 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: 2f102880a051266a9d81e083613d47a21cb2d769c011a7f50a91d571b04aba90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "390add172b40aa2958d94f2c5b90f93a8dd392c8eaab43392c33fed4558fec40",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-07-28T09:14:21Z",
    "title_canon_sha256": "deeb9d2e573f60f99a70eefa258887320d68b94ba943ca485dfe629ca6923923"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.20650",
    "kind": "arxiv",
    "version": 1
  }
}