Pith Number

pith:UWZSZDCN

pith:2025:UWZSZDCNE5ZLW4MBWDPH4PRQOG

not attested not anchored not stored refs pending

Toward Evaluative Thinking: Meta Policy Optimization with Evolving Reward Models

Chanwoo Park, Dongyeop Kang, Suin Kim, Vipul Raheja, Zae Myung Kim

arxiv:2504.20157 v2 · 2025-04-28 · 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{UWZSZDCNE5ZLW4MBWDPH4PRQOG}

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.

Cited by

1 paper in Pith

Rubrics as Rewards: Reinforcement Learning Beyond Verifiable Domains

Receipt and verification

First computed	2026-07-05T11:04:21.895711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5b32c8c4d2772bb7181b0de7e3e3071932ee580b045a821d8afba7b1e7f3da2

Aliases

arxiv: 2504.20157 · arxiv_version: 2504.20157v2 · doi: 10.48550/arxiv.2504.20157 · pith_short_12: UWZSZDCNE5ZL · pith_short_16: UWZSZDCNE5ZLW4MB · pith_short_8: UWZSZDCN

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/UWZSZDCNE5ZLW4MBWDPH4PRQOG \
  | 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: a5b32c8c4d2772bb7181b0de7e3e3071932ee580b045a821d8afba7b1e7f3da2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf520f99905c65841559b4016df16e4c3a7d3c2e15254ab072c7d2322d90f2f9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-04-28T18:02:35Z",
    "title_canon_sha256": "fba430344ee564341a8eeaaf413c784196d06b469a3b61aef11df8c72ee48635"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.20157",
    "kind": "arxiv",
    "version": 2
  }
}