Pith Number

pith:R7EMDRUQ

pith:2025:R7EMDRUQM74AFN3UEIEEVHTEJL

not attested not anchored not stored refs pending

Defensive Adversarial CAPTCHA: A Semantics-Driven Framework for Natural Adversarial Example Generation

Chi-Man Pun, Cong Wu, Jizhe Zhou, Jun Luo, Tao Li, Wei Ni, Xia Du, Xiaoyuan Liu, Zhe Chen, Zheng Lin

arxiv:2506.10685 v3 · 2025-06-12 · cs.CV · 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{R7EMDRUQM74AFN3UEIEEVHTEJL}

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	2026-07-05T11:30:01.669020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fc8c1c69067f802b77422084a9e644ad6c50bd5e2f34af5dd3a408101200611

Aliases

arxiv: 2506.10685 · arxiv_version: 2506.10685v3 · doi: 10.48550/arxiv.2506.10685 · pith_short_12: R7EMDRUQM74A · pith_short_16: R7EMDRUQM74AFN3U · pith_short_8: R7EMDRUQ

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/R7EMDRUQM74AFN3UEIEEVHTEJL \
  | 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: 8fc8c1c69067f802b77422084a9e644ad6c50bd5e2f34af5dd3a408101200611

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "006b855d5ae216eb5ef1ec2832f2a597443c385e03ef96d8d807f52b4536d569",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-06-12T13:30:01Z",
    "title_canon_sha256": "41b59ff6dfb36a0db15d22ba671facaf747effed56388ff4da594f485cda3fef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.10685",
    "kind": "arxiv",
    "version": 3
  }
}