Pith Number

pith:SX2HRV7I

pith:2026:SX2HRV7IS5NOZRDHPQD7CD5OFU

not attested not anchored not stored refs pending

The Riddle Riddle: Testing Flexible Reasoning in Large Language Models and Humans

Bella Fascendini, Kathryn McGregor, Max D. Gupta, Thomas L. Griffiths

arxiv:2606.27103 v1 · 2026-06-25 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SX2HRV7IS5NOZRDHPQD7CD5OFU}

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	2026-06-26T01:16:09.413933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95f478d7e8975aecc4677c07f10fae2d373bec7b86807295554c2714693bb726

Aliases

arxiv: 2606.27103 · arxiv_version: 2606.27103v1 · doi: 10.48550/arxiv.2606.27103 · pith_short_12: SX2HRV7IS5NO · pith_short_16: SX2HRV7IS5NOZRDH · pith_short_8: SX2HRV7I

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/SX2HRV7IS5NOZRDHPQD7CD5OFU \
  | 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: 95f478d7e8975aecc4677c07f10fae2d373bec7b86807295554c2714693bb726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6eb7ca4b4d13abcbcf7784ead08ffebcf28dcd0185ca21c72d229e914bd54d9c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-06-25T14:41:12Z",
    "title_canon_sha256": "f509cd3e0d3f84f4e77d77397b4a00be9e98a72912fc08b087ad49cf345f2421"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.27103",
    "kind": "arxiv",
    "version": 1
  }
}