Pith Number

pith:FK4CIBR3

pith:2026:FK4CIBR3W33L4RGK2I32YOSVP3

not attested not anchored not stored refs pending

Evaluator Ensembles Under Reward Hacking: Covariance Geometry and Finite-Search Guarantees

Fariya Afrin, Ibne Farabi Shihab

arxiv:2608.08002 v1 · 2026-08-08 · 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{FK4CIBR3W33L4RGK2I32YOSVP3}

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	2026-08-11T01:21:21.481712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ab824063bb6f6be44cad237ac3a557eeaf0d29c689e07f9023d912d6aa277a7

Aliases

arxiv: 2608.08002 · arxiv_version: 2608.08002v1 · doi: 10.48550/arxiv.2608.08002 · pith_short_12: FK4CIBR3W33L · pith_short_16: FK4CIBR3W33L4RGK · pith_short_8: FK4CIBR3

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/FK4CIBR3W33L4RGK2I32YOSVP3 \
  | 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: 2ab824063bb6f6be44cad237ac3a557eeaf0d29c689e07f9023d912d6aa277a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edd5f91ecafbc99e52337c14e9776f37b9afe0423f0d8c8571f6d48f2f3ddff7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-08-08T08:28:55Z",
    "title_canon_sha256": "cc77861169c317c6c0330f71ad56604ea594c282958b21320466ec6550530343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.08002",
    "kind": "arxiv",
    "version": 1
  }
}