Pith Number

pith:Q3Q55EBS

pith:2018:Q3Q55EBSQR34NXP5ZYK6NR3LZP

not attested not anchored not stored refs pending

Solving Bongard Problems with a Visual Language and Pragmatic Reasoning

Constantin A. Rothkopf, Frank J\"akel, Stefan Depeweg

arxiv:1804.04452 v1 · 2018-04-12 · stat.ML · cs.AI · 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{Q3Q55EBSQR34NXP5ZYK6NR3LZP}

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	2026-05-18T00:18:37.516285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86e1de90328477c6ddfdce15e6c76bcbdfb0bf55dba135e220ae3b28cd86632c

Aliases

arxiv: 1804.04452 · arxiv_version: 1804.04452v1 · doi: 10.48550/arxiv.1804.04452 · pith_short_12: Q3Q55EBSQR34 · pith_short_16: Q3Q55EBSQR34NXP5 · pith_short_8: Q3Q55EBS

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/Q3Q55EBSQR34NXP5ZYK6NR3LZP \
  | 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: 86e1de90328477c6ddfdce15e6c76bcbdfb0bf55dba135e220ae3b28cd86632c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5ebf31f3542471672acbeb0032ce461f1d5aa4feb37ce8ef6c8e8d969551843",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-04-12T12:05:28Z",
    "title_canon_sha256": "5eda041ce83f82e96362ff018d32c80360ce56b5f1c36b1cfa797d570f5ff17d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04452",
    "kind": "arxiv",
    "version": 1
  }
}