Pith Number

pith:PPZQ3XFU

pith:2020:PPZQ3XFU4YK536VBV7JLBQX5VA

not attested not anchored not stored refs pending

Stable Policy Optimization via Off-Policy Divergence Regularization

Ahmed Touati, Amy Zhang, Joelle Pineau, Pascal Vincent

arxiv:2003.04108 v2 · 2020-03-09 · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPZQ3XFU4YK536VBV7JLBQX5VA}

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	2026-07-05T01:11:34.120666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf30ddcb4e615ddfaa1afd2b0c2fda8313ecd958c95551c3aa66c7f364c0ead

Aliases

arxiv: 2003.04108 · arxiv_version: 2003.04108v2 · doi: 10.48550/arxiv.2003.04108 · pith_short_12: PPZQ3XFU4YK5 · pith_short_16: PPZQ3XFU4YK536VB · pith_short_8: PPZQ3XFU

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/PPZQ3XFU4YK536VBV7JLBQX5VA \
  | 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: 7bf30ddcb4e615ddfaa1afd2b0c2fda8313ecd958c95551c3aa66c7f364c0ead

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd6edb21a9ae499b45672a5d624f174422555f4123aff9f5c1f8572010e13d49",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-03-09T13:05:47Z",
    "title_canon_sha256": "e4899f4f6dad38f47f139b14ca1b3aa566209cb5a4f01fdfe2e5f4ee3c9fea01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.04108",
    "kind": "arxiv",
    "version": 2
  }
}