Pith Number

pith:4QMGOBLT

pith:2026:4QMGOBLTBDJJYLVZL6YBZ2WSJE

not attested not anchored not stored refs pending

MechVQA: Benchmarking and Enhancing Multimodal LLMs on Comprehensive Mechanical Drawing Understanding

Cao Dongxing, Hua Zhou, Qian Kou, Xiaofeng Shi, Xiaosong Qiu, Xinyang Wang, Yulin Li

arxiv:2605.30794 v1 · 2026-05-29 · cs.CV · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QMGOBLTBDJJYLVZL6YBZ2WSJE}

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	2026-06-01T01:03:17.196369Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e41867057308d29c2eb95fb01cead249383d0e72c2698d30b84607613e8c1d08

Aliases

arxiv: 2605.30794 · arxiv_version: 2605.30794v1 · doi: 10.48550/arxiv.2605.30794 · pith_short_12: 4QMGOBLTBDJJ · pith_short_16: 4QMGOBLTBDJJYLVZ · pith_short_8: 4QMGOBLT

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/4QMGOBLTBDJJYLVZL6YBZ2WSJE \
  | 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: e41867057308d29c2eb95fb01cead249383d0e72c2698d30b84607613e8c1d08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "889cadce2f359486850a831b9160dfe5a4e1dd889f648d40926b3031add5aa02",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-29T03:34:37Z",
    "title_canon_sha256": "b93abafa352f7b7961b27bb2222d47df7ed3b9dd7ad17ed5893a1c93d23a7d72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.30794",
    "kind": "arxiv",
    "version": 1
  }
}