Pith Number

pith:JADZI3HU

pith:2026:JADZI3HULM4JKPYGCRHZZ5P7ED

not attested not anchored not stored refs pending

One Bias After Another: Mechanistic Reward Shaping and Persistent Biases in Language Reward Models

Daniel Fein, Max Lamparth, Mykel J. Kochenderfer, Nick Haber, Violet Xiang

arxiv:2603.03291 v2 · 2026-02-06 · cs.CL · 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{JADZI3HULM4JKPYGCRHZZ5P7ED}

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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.

Cited by

1 paper in Pith

Reward Bias Substitution: Single-Axis Bias Mitigations Redirect Optimization Pressure

Receipt and verification

First computed	2026-06-02T02:04:15.551574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4807946cf45b38953f06144f9cf5ff20eaf0381146e3429f92d55a356d40c007

Aliases

arxiv: 2603.03291 · arxiv_version: 2603.03291v2 · doi: 10.48550/arxiv.2603.03291 · pith_short_12: JADZI3HULM4J · pith_short_16: JADZI3HULM4JKPYG · pith_short_8: JADZI3HU

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/JADZI3HULM4JKPYGCRHZZ5P7ED \
  | 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: 4807946cf45b38953f06144f9cf5ff20eaf0381146e3429f92d55a356d40c007

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ab1f9c4f9d1e598adf8a23394c822da821917faf0c129c908a61a687adb7bee",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-02-06T00:11:37Z",
    "title_canon_sha256": "edf5b7c296b5c77d4b43d951b90db0ee5eb940addd666a3a0ce0f576e5d40f75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.03291",
    "kind": "arxiv",
    "version": 2
  }
}