Pith Number

pith:MVKFNPNE

pith:2026:MVKFNPNECPZ6JR5XBUWTJG63VQ

not attested not anchored not stored refs pending

Med-R2: An Adversarial Benchmark for Evidence-Grounded Reasoning in Medical VLMs

Fucheng Niu, Jiaxiang Liu, Wen Ma, Zhiting Fan, Zikai Xiao, Zuozhu Liu

arxiv:2605.24492 v1 · 2026-05-23 · 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{MVKFNPNECPZ6JR5XBUWTJG63VQ}

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	2026-05-26T01:03:42.737917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

655456bda413f3e4c7b70d2d349bdbac1223ec67e9fc590d92897730be35d339

Aliases

arxiv: 2605.24492 · arxiv_version: 2605.24492v1 · doi: 10.48550/arxiv.2605.24492 · pith_short_12: MVKFNPNECPZ6 · pith_short_16: MVKFNPNECPZ6JR5X · pith_short_8: MVKFNPNE

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/MVKFNPNECPZ6JR5XBUWTJG63VQ \
  | 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: 655456bda413f3e4c7b70d2d349bdbac1223ec67e9fc590d92897730be35d339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2b0f2e003a52f7c2409c4068c3728b8b11c172cc67629ed6c64fd48c88ca946",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-23T09:50:19Z",
    "title_canon_sha256": "9d0b42e6abea74530dcb5ed41d6fd980f45f94ff6d34e854f2d87a6dd3b0e1fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24492",
    "kind": "arxiv",
    "version": 1
  }
}