Pith Number

pith:5CRLE33S

pith:2025:5CRLE33SN4PZVRIBUOK552MPAV

not attested not anchored not stored refs pending

Towards User-level Private Reinforcement Learning with Human Feedback

Difei Xu, Di Wang, Jiaming Zhang, Jinhui Xu, Mengdi Li, Meng Ding, Mingxi Lei, Zihang Xiang

arxiv:2502.17515 v1 · 2025-02-22 · cs.LG · 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{5CRLE33SN4PZVRIBUOK552MPAV}

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

Private Direct Preference Optimization for LLM Alignment

Receipt and verification

First computed	2026-07-05T10:19:11.822253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8a2b26f726f1f9ac501a395dee98f057239475e4359324bd2bb1ad577413aea

Aliases

arxiv: 2502.17515 · arxiv_version: 2502.17515v1 · doi: 10.48550/arxiv.2502.17515 · pith_short_12: 5CRLE33SN4PZ · pith_short_16: 5CRLE33SN4PZVRIB · pith_short_8: 5CRLE33S

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/5CRLE33SN4PZVRIBUOK552MPAV \
  | 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: e8a2b26f726f1f9ac501a395dee98f057239475e4359324bd2bb1ad577413aea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7e62449e2ab55615d85c47c7239d2f12c8b66012681a95a1e3bccafa0939a98",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-02-22T14:57:28Z",
    "title_canon_sha256": "10f1ce58c805e76ba7e0bb79d0518a97b0aee634cab944c21037aaa9079977c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.17515",
    "kind": "arxiv",
    "version": 1
  }
}