Pith Number

pith:GCEKMO4H

pith:2026:GCEKMO4HZUYTQC2L5M55CLM2BF

not attested not anchored not stored refs pending

XSPA: Crafting Imperceptible X-Shaped Sparse Adversarial Perturbations for Transferable Attacks on VLMs

Chengyin Hu, Jiahuan Long, Jiaju Han, Jiujiang Guo, Lehan Sun, Luwei Yang, Qike Zhang, Xuemeng Sun, Yiwei Wei

arxiv:2603.28568 v2 · 2026-03-30 · 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{GCEKMO4HZUYTQC2L5M55CLM2BF}

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	2026-08-04T02:00:13.531364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3088a63b87cd31380b4beb3bd12d9a097c55fa4379c2f4270b7ea21a1ccc9cbb

Aliases

arxiv: 2603.28568 · arxiv_version: 2603.28568v2 · doi: 10.48550/arxiv.2603.28568 · pith_short_12: GCEKMO4HZUYT · pith_short_16: GCEKMO4HZUYTQC2L · pith_short_8: GCEKMO4H

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/GCEKMO4HZUYTQC2L5M55CLM2BF \
  | 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: 3088a63b87cd31380b4beb3bd12d9a097c55fa4379c2f4270b7ea21a1ccc9cbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ab253bb28c249ada9efb176c9b83d44b40000d36181d46d8f10d610efb450c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-03-30T15:24:34Z",
    "title_canon_sha256": "7f841d752c78fe7a79d8aeef61e55bd775b9fea3a68e2a8ed3e14c96e7939d63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.28568",
    "kind": "arxiv",
    "version": 2
  }
}