Pith Number

pith:UTXYKUZ5

pith:2026:UTXYKUZ57A36AJ4WF6RBD74QA6

not attested not anchored not stored refs pending

Engine-Equal, Human-Unequal: A Reproducible Outcome Skew in Engine-Assessed Equal Chess Positions

Jesung Park

arxiv:2607.25655 v1 · 2026-07-28 · cs.AI · physics.soc-ph · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UTXYKUZ57A36AJ4WF6RBD74QA6}

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	2026-07-29T01:25:55.051182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4ef85533df837e027962fa211ff9007936eb11e4c3f5e44a4629b34a55e7531

Aliases

arxiv: 2607.25655 · arxiv_version: 2607.25655v1 · doi: 10.48550/arxiv.2607.25655 · pith_short_12: UTXYKUZ57A36 · pith_short_16: UTXYKUZ57A36AJ4W · pith_short_8: UTXYKUZ5

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/UTXYKUZ57A36AJ4WF6RBD74QA6 \
  | 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: a4ef85533df837e027962fa211ff9007936eb11e4c3f5e44a4629b34a55e7531

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa46c0f5ba49cc6f20afd18aef1af0ec61cd5939aa4d6e8e026f42945f4d1940",
    "cross_cats_sorted": [
      "physics.soc-ph",
      "stat.AP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-28T12:42:45Z",
    "title_canon_sha256": "408374248ca092a7a6e083a0746cdb3bd76f24517d3904d798f60c55fd8494a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.25655",
    "kind": "arxiv",
    "version": 1
  }
}