Pith Number

pith:5RFBIAQV

pith:2019:5RFBIAQVLR746A363QC3VUYWAO

not attested not anchored not stored refs pending

Optimistic Proximal Policy Optimization

Takahisa Imagawa, Takuya Hiraoka, Yoshimasa Tsuruoka

arxiv:1906.11075 v1 · 2019-06-25 · 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{5RFBIAQVLR746A363QC3VUYWAO}

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	2026-05-17T23:42:09.990177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec4a1402155c7fcf037edc05bad31603a6a4bf9d90a4ce6bbf8bd171757c3d82

Aliases

arxiv: 1906.11075 · arxiv_version: 1906.11075v1 · doi: 10.48550/arxiv.1906.11075 · pith_short_12: 5RFBIAQVLR74 · pith_short_16: 5RFBIAQVLR746A36 · pith_short_8: 5RFBIAQV

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/5RFBIAQVLR746A363QC3VUYWAO \
  | 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: ec4a1402155c7fcf037edc05bad31603a6a4bf9d90a4ce6bbf8bd171757c3d82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dc49043b561aa629ef9cbe569b685327f228ae8ca88b4ba2f55b58568461fe9",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-06-25T10:21:02Z",
    "title_canon_sha256": "e081c8735a0356d37d5ee7676073f9769a35a8fd1841b84e1eb8489779238aa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.11075",
    "kind": "arxiv",
    "version": 1
  }
}