Pith Number

pith:Y4WCG5AL

pith:2026:Y4WCG5ALFCVICFGM66JNQZKV7R

not attested not anchored not stored refs pending

Seeing Isn't Knowing: Do VLMs Know When Not to Answer Spatial Questions (and Why)?

Han Lin, Idan Szpektor, Mohit Bansal, Yonatan Bitton, Yue Zhang, Zun Wang

arxiv:2605.30557 v1 · 2026-05-28 · cs.CV · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y4WCG5ALFCVICFGM66JNQZKV7R}

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	2026-06-01T01:03:00.997304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c72c23740b28aa8114ccf792d86555fc5e232002690cc23c31c5f9fd7842e07a

Aliases

arxiv: 2605.30557 · arxiv_version: 2605.30557v1 · doi: 10.48550/arxiv.2605.30557 · pith_short_12: Y4WCG5ALFCVI · pith_short_16: Y4WCG5ALFCVICFGM · pith_short_8: Y4WCG5AL

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/Y4WCG5ALFCVICFGM66JNQZKV7R \
  | 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: c72c23740b28aa8114ccf792d86555fc5e232002690cc23c31c5f9fd7842e07a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53ad61e218a013e8d2188873155f9f7ee1001ca2b2ac1d3343feeec6385dc131",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-28T20:44:47Z",
    "title_canon_sha256": "8847a8b4d4c0d2dd31b1889daab31cb5db592506e6dda9e53287ea5eee06ebb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.30557",
    "kind": "arxiv",
    "version": 1
  }
}