Pith Number

pith:FFHGT2J7

pith:2026:FFHGT2J7SND6CGD4XPPIK4PGBL

not attested not anchored not stored refs pending

BPPO: Binary Prefix Policy Optimization for Efficient GRPO-Style Reasoning RL with Concise Responses

Huan Song, Jiawei Shao, Qingfei Zhao, Shuyu Tian, Xuelong Li

arxiv:2605.28028 v1 · 2026-05-27 · 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{FFHGT2J7SND6CGD4XPPIK4PGBL}

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	2026-05-28T01:04:56.425298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

294e69e93f9347e1187cbbde8571e60ac7951cd3d3ceb9d6120336f05c3a2378

Aliases

arxiv: 2605.28028 · arxiv_version: 2605.28028v1 · doi: 10.48550/arxiv.2605.28028 · pith_short_12: FFHGT2J7SND6 · pith_short_16: FFHGT2J7SND6CGD4 · pith_short_8: FFHGT2J7

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/FFHGT2J7SND6CGD4XPPIK4PGBL \
  | 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: 294e69e93f9347e1187cbbde8571e60ac7951cd3d3ceb9d6120336f05c3a2378

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "353cb427cf6d72134290f1ef38b92e289c43a2964e525df6ddb9e34bf18a28f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-05-27T06:34:17Z",
    "title_canon_sha256": "9ef007e266e57d7c377d4a76ee0b22ff1161ea4cd50c5a699c63b2726b2eb669"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28028",
    "kind": "arxiv",
    "version": 1
  }
}