Pith Number

pith:UU7TUH2F

pith:2026:UU7TUH2FBN2CH6FTL75YUNHXKE

not attested not anchored not stored refs pending

Don't Peek at the Answer: Outcome-Masked Group Relative Policy Optimization for Label-Free RLVR

Biao Fu, Liang Zhang, Xiaodong Shi, Yidong Chen, Yongshi Ye

arxiv:2608.03119 v1 · 2026-08-04 · 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{UU7TUH2FBN2CH6FTL75YUNHXKE}

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	2026-08-05T00:45:43.722287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a53f3a1f450b7423f8b35ffb8a34f75111787c8c0754ed456340c8e6a36867a4

Aliases

arxiv: 2608.03119 · arxiv_version: 2608.03119v1 · doi: 10.48550/arxiv.2608.03119 · pith_short_12: UU7TUH2FBN2C · pith_short_16: UU7TUH2FBN2CH6FT · pith_short_8: UU7TUH2F

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/UU7TUH2FBN2CH6FTL75YUNHXKE \
  | 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: a53f3a1f450b7423f8b35ffb8a34f75111787c8c0754ed456340c8e6a36867a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a4f575b64c2f70243b5a7c4c9ed2fc928af64c324303a3120c8f9bb6d7101f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-08-04T04:41:20Z",
    "title_canon_sha256": "ee3f2c847652c588077e7e48f67a0459afa5f0ed7ef9d8d91185b38dc83dd71b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.03119",
    "kind": "arxiv",
    "version": 1
  }
}