Pith Number

pith:F2IM7JQH

pith:2025:F2IM7JQH2CMVRZMOUM7CVC2V4T

not attested not anchored not stored refs pending

Understanding Space Is Rocket Science -- Only Top Reasoning Models Can Solve Spatial Understanding Tasks

Anthony Ventresque, Ellen Rushe, Mayug Maniparambil, Nils Hoehing, Noel E. O'Connor

arxiv:2509.02175 v2 · 2025-09-02 · cs.CV · cs.AI · cs.CL · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2IM7JQH2CMVRZMOUM7CVC2V4T}

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	2026-07-05T12:04:41.049849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e90cfa607d09958e58ea33e2a8b55e4d6a61d4ffe7ffe08826a11bafe8e15b4

Aliases

arxiv: 2509.02175 · arxiv_version: 2509.02175v2 · doi: 10.48550/arxiv.2509.02175 · pith_short_12: F2IM7JQH2CMV · pith_short_16: F2IM7JQH2CMVRZMO · pith_short_8: F2IM7JQH

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/F2IM7JQH2CMVRZMOUM7CVC2V4T \
  | 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: 2e90cfa607d09958e58ea33e2a8b55e4d6a61d4ffe7ffe08826a11bafe8e15b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0115a9ad642bdc7d993a03bb3eb8e744823011f70d0c277df4e055cb52b4d0a1",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2025-09-02T10:32:58Z",
    "title_canon_sha256": "02938559bc9c06033fa37e3412ce63597cabd0e58f4eec1af551098713c4b42f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.02175",
    "kind": "arxiv",
    "version": 2
  }
}