Pith Number

pith:FQSDQZFN

pith:2025:FQSDQZFNTNJPUBHNV7MOBX2TXI

not attested not anchored not stored refs pending

Proactive Constrained Policy Optimization with Preemptive Penalty

Guoqing Liu, Haifeng Zhang, Jun Wang, Ning Yang, Pengyu Wang, Pin Lv

arxiv:2508.01883 v2 · 2025-08-03 · 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{FQSDQZFNTNJPUBHNV7MOBX2TXI}

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	2026-07-05T11:49:34.398368Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c243864ad9b52fa04edafd8e0df53ba06fb2232dead43cb0f02026001f5349d

Aliases

arxiv: 2508.01883 · arxiv_version: 2508.01883v2 · doi: 10.48550/arxiv.2508.01883 · pith_short_12: FQSDQZFNTNJP · pith_short_16: FQSDQZFNTNJPUBHN · pith_short_8: FQSDQZFN

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/FQSDQZFNTNJPUBHNV7MOBX2TXI \
  | 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: 2c243864ad9b52fa04edafd8e0df53ba06fb2232dead43cb0f02026001f5349d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f57f976a72dd40d564cc00596104878fba6af44ed70ddc75e8771cf38940f0d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-08-03T18:35:55Z",
    "title_canon_sha256": "fe8d0f635a8c4dde87446ed5ba1f1cf8d86e26cf7743842cbde37988bf25452e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.01883",
    "kind": "arxiv",
    "version": 2
  }
}