Pith Number

pith:PBCXBK5V

pith:2026:PBCXBK5V3IO7I3TCEP4RAKFKEW

not attested not anchored not stored refs pending

Whose Refusal Is It? The Unmeasured Contribution of Black-Box Multimodal Guardrails

Haowen Xu, Haoyu Zhang, Mohammad Zandsalimy, Shanu Sushmita, Shibo Zheng, Xiao Luo, Yi Feng

arxiv:2608.08641 v1 · 2026-08-09 · 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{PBCXBK5V3IO7I3TCEP4RAKFKEW}

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	2026-08-11T01:23:15.368770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

784570abb5da1df46e6223f91028aa2596cb6d38d793270a8dfcd6e073c7ebd5

Aliases

arxiv: 2608.08641 · arxiv_version: 2608.08641v1 · doi: 10.48550/arxiv.2608.08641 · pith_short_12: PBCXBK5V3IO7 · pith_short_16: PBCXBK5V3IO7I3TC · pith_short_8: PBCXBK5V

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/PBCXBK5V3IO7I3TCEP4RAKFKEW \
  | 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: 784570abb5da1df46e6223f91028aa2596cb6d38d793270a8dfcd6e073c7ebd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26e18c0b206e60b68349d8eb95ca124f2a5f18c21a20e7edb7f59dc7996f710a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-08-09T11:19:30Z",
    "title_canon_sha256": "f67e2b506da9e39cc82546ae8fa86ea4d5f6969ba057d5b491c997b430565b68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.08641",
    "kind": "arxiv",
    "version": 1
  }
}