Pith Number

pith:7FVYOLHD

pith:2018:7FVYOLHD7TPRGRXNIYCZAXDQ2B

not attested not anchored not stored refs pending

Generating Levels That Teach Mechanics

Ahmed Khalifa, Andy Nealen, Gabriella A.B. Barros, Julian Togelius, Michael Cerny Green

arxiv:1807.06734 v4 · 2018-07-18 · 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{7FVYOLHD7TPRGRXNIYCZAXDQ2B}

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	2026-05-18T00:04:29.549856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f96b872ce3fcdf1346ed4605905c70d062b1e2930eb050367ed9b28df3e7cccb

Aliases

arxiv: 1807.06734 · arxiv_version: 1807.06734v4 · doi: 10.48550/arxiv.1807.06734 · pith_short_12: 7FVYOLHD7TPR · pith_short_16: 7FVYOLHD7TPRGRXN · pith_short_8: 7FVYOLHD

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/7FVYOLHD7TPRGRXNIYCZAXDQ2B \
  | 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: f96b872ce3fcdf1346ed4605905c70d062b1e2930eb050367ed9b28df3e7cccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c58cf574892eef495c67e0eb03acbad3316e67cc174f63e1399fdb3b921cdd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-07-18T01:47:47Z",
    "title_canon_sha256": "a659b19990bffb7868a4e88b2042c62f7158a2f4e8fae020f85f600a858917cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06734",
    "kind": "arxiv",
    "version": 4
  }
}