Pith Number

pith:4KYAYFVY

pith:2026:4KYAYFVYOMTIG5M6DRB4D6UP6G

not attested not anchored not stored refs pending

Position Bias is Hidden Behind Ceiling Effects: A Permutation Diagnostic for LLM Benchmarks

Hiroki Tamba

arxiv:2607.20864 v1 · 2026-07-23 · cs.LG · 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{4KYAYFVYOMTIG5M6DRB4D6UP6G}

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	2026-07-24T00:23:38.747533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2b00c16b8732683759e1c43c1fa8ff1a0733526d105a1a82efae4490bfed6cf

Aliases

arxiv: 2607.20864 · arxiv_version: 2607.20864v1 · doi: 10.48550/arxiv.2607.20864 · pith_short_12: 4KYAYFVYOMTI · pith_short_16: 4KYAYFVYOMTIG5M6 · pith_short_8: 4KYAYFVY

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/4KYAYFVYOMTIG5M6DRB4D6UP6G \
  | 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: e2b00c16b8732683759e1c43c1fa8ff1a0733526d105a1a82efae4490bfed6cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "259ea584454f01d279db90fa56bee75afe9a928160d1eb6e59bf54f34fa2efbf",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-23T02:45:02Z",
    "title_canon_sha256": "af079509c7fe9a429ccd96ba0244e941d672c32ff5a0842fce14687ec21fa045"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.20864",
    "kind": "arxiv",
    "version": 1
  }
}