Pith Number

pith:QIAYVDZQ

pith:2026:QIAYVDZQMYBWLTOL4RQNEUEWRW

not attested not anchored not stored refs pending

Open-World Evaluations for Measuring Frontier AI Capabilities

Andrew B. Hall, Andrew Schwartz, Arvind Narayanan, Cozmin Ududec, Dimitris Papailiopoulos, Gillian K Hadfield, Harry Coppock, Helen Toner, J.J. Allaire, Magda Dubois, Peter Kirgis, Rishi Bommasani, Sara Hooker, Sayash Kapoor, Seth Lazar, Shoshannah Tekofsky, Stephan Rabanser, Steve Newman

arxiv:2605.20520 v1 · 2026-05-19 · 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{QIAYVDZQMYBWLTOL4RQNEUEWRW}

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	2026-05-21T01:04:40.814265Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82018a8f30660365cdcbe460d250968daf955b61714ae1bcf3207b61bb263f49

Aliases

arxiv: 2605.20520 · arxiv_version: 2605.20520v1 · doi: 10.48550/arxiv.2605.20520 · pith_short_12: QIAYVDZQMYBW · pith_short_16: QIAYVDZQMYBWLTOL · pith_short_8: QIAYVDZQ

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/QIAYVDZQMYBWLTOL4RQNEUEWRW \
  | 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: 82018a8f30660365cdcbe460d250968daf955b61714ae1bcf3207b61bb263f49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12d078cc3652f496c36b2ce6f963599fe8e583753f8a6a9c0c87492c9476387a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-19T21:42:32Z",
    "title_canon_sha256": "3e2bb5b85f5e86ddd7423f38c6ed5c7f7b46d2a62840c2bd0b150c9c6181cdb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20520",
    "kind": "arxiv",
    "version": 1
  }
}