Pith Number

pith:OMJVU42N

pith:2026:OMJVU42NE7PDITWEQZCKYHUDVX

not attested not anchored not stored refs pending

Do Medical Vision Language Models Actually See? A Counterfactual Grounding Framework and Hard-Negative Contrastive Training for Visually-Reliant Medical VLMs

Anas Zafar, Ashish Vashist, Jia Wu, Leema Krishna Murali, Siddhant Bharadwaj

arxiv:2607.03647 v1 · 2026-07-04 · 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{OMJVU42NE7PDITWEQZCKYHUDVX}

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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	2026-07-07T02:17:59.377967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73135a734d27de344ec48644ac1e83aded1c947ae2529d06e0756267a831346d

Aliases

arxiv: 2607.03647 · arxiv_version: 2607.03647v1 · doi: 10.48550/arxiv.2607.03647 · pith_short_12: OMJVU42NE7PD · pith_short_16: OMJVU42NE7PDITWE · pith_short_8: OMJVU42N

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/OMJVU42NE7PDITWEQZCKYHUDVX \
  | 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: 73135a734d27de344ec48644ac1e83aded1c947ae2529d06e0756267a831346d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7504d277d32ae4bbbfd71e0ee62ca8de19cd6aa9759a5c359ea9bbe8ddcff881",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-07-04T00:06:35Z",
    "title_canon_sha256": "33bc7cbf746e63f0f7d156ab8d4364effd09bf66d6692c4f92bf3a4b14f8c9d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.03647",
    "kind": "arxiv",
    "version": 1
  }
}