Pith Number

pith:QZ5WOFU4

pith:2026:QZ5WOFU4SMYCII5KPN6WUM3PRK

not attested not anchored not stored refs pending

CEPO: RLVR Self-Distillation using Contrastive Evidence Policy Optimization

Abdelrahman M. Shaker, Ahmed Heakl, Fahad Shahbaz Khan, Omar Fetouh, Rania Elbadry, Salman Khan, Youssef Mohamed

arxiv:2605.19436 v1 · 2026-05-19 · cs.LG · cs.CL · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZ5WOFU4SMYCII5KPN6WUM3PRK}

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	2026-05-20T01:05:45.791306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

867b67169c93302423aa7b7d6a336f8a85c29b9cbfd55ba2129c965040d86231

Aliases

arxiv: 2605.19436 · arxiv_version: 2605.19436v1 · doi: 10.48550/arxiv.2605.19436 · pith_short_12: QZ5WOFU4SMYC · pith_short_16: QZ5WOFU4SMYCII5K · pith_short_8: QZ5WOFU4

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/QZ5WOFU4SMYCII5KPN6WUM3PRK \
  | 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: 867b67169c93302423aa7b7d6a336f8a85c29b9cbfd55ba2129c965040d86231

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daa6d1692c4ea02489b34ce56a4fd82ffa071161d61c7c2a44ec8e507a20f2e7",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-19T06:46:19Z",
    "title_canon_sha256": "ab233004695d1df74b4b3fb4f5044a1e8cbd66df1a1d998abb8a9dc92db56e4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19436",
    "kind": "arxiv",
    "version": 1
  }
}