Pith Number

pith:T727AUPO

pith:2020:T727AUPORYXGONYKJU5TPJA3PX

not attested not anchored not stored refs pending

PCGRL: Procedural Content Generation via Reinforcement Learning

Ahmed Khalifa, Julian Togelius, Philip Bontrager, Sam Earle

arxiv:2001.09212 v3 · 2020-01-24 · cs.LG · cs.AI · 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{T727AUPORYXGONYKJU5TPJA3PX}

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

Promptbreeder: Self-Referential Self-Improvement Via Prompt Evolution

Receipt and verification

First computed	2026-07-05T01:26:50.661979Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ff5f051ee8e2e67370a4d3b37a41b7df819c496be1ec3648eeeb8f106461241

Aliases

arxiv: 2001.09212 · arxiv_version: 2001.09212v3 · doi: 10.48550/arxiv.2001.09212 · pith_short_12: T727AUPORYXG · pith_short_16: T727AUPORYXGONYK · pith_short_8: T727AUPO

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/T727AUPORYXGONYKJU5TPJA3PX \
  | 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: 9ff5f051ee8e2e67370a4d3b37a41b7df819c496be1ec3648eeeb8f106461241

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "868718deef84d68efb7ab2599e693380095e9af88215b943b7f07f329d1ab902",
    "cross_cats_sorted": [
      "cs.AI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-01-24T22:09:08Z",
    "title_canon_sha256": "7bd8d455b4c1801b326467b40ef20260fec3078e3a0a8bc1d7f344a33fe7f26c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.09212",
    "kind": "arxiv",
    "version": 3
  }
}