Pith Number

pith:2WEMH72Y

pith:2026:2WEMH72YXH7KZI2XO53YENHGNH

not attested not anchored not stored refs pending

The Variance Brain Foundation Models Forgot: Third-Order Statistics Predict Cognition Where Billion-Parameter Models Fail

Demian Wassermann, Gabriel Mahuas, Giovanni Marraffini, Trinidad Borrell, Victoria Shevchenko

arxiv:2606.04010 v1 · 2026-05-29 · q-bio.NC · 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{2WEMH72YXH7KZI2XO53YENHGNH}

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	2026-06-04T00:06:44.466040Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d588c3ff58b9feaca35777778234e669e19913ebdec6b87dcfd70c5e0a020789

Aliases

arxiv: 2606.04010 · arxiv_version: 2606.04010v1 · doi: 10.48550/arxiv.2606.04010 · pith_short_12: 2WEMH72YXH7K · pith_short_16: 2WEMH72YXH7KZI2X · pith_short_8: 2WEMH72Y

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/2WEMH72YXH7KZI2XO53YENHGNH \
  | 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: d588c3ff58b9feaca35777778234e669e19913ebdec6b87dcfd70c5e0a020789

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08b5769121e585a2f5ae074bd61ba0aeb4cad07ee84c59fc0b558ee61a8c5d07",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2026-05-29T23:57:21Z",
    "title_canon_sha256": "42868730e6dcb4ad8cd5e11aa01fab7b7a910a88887c3fffcad54557cf36551d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.04010",
    "kind": "arxiv",
    "version": 1
  }
}