Pith Number

pith:BU2V3XZQ

pith:2015:BU2V3XZQL3ZLYLUBFZ7DZXMGOZ

not attested not anchored not stored refs pending

Measuring an Artificial Intelligence System's Performance on a Verbal IQ Test For Young Children

Aaron Urasky, Gy\"orgy Tur\'an, Robert H. Sloan, Stellan Ohlsson

arxiv:1509.03390 v1 · 2015-09-11 · 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{BU2V3XZQL3ZLYLUBFZ7DZXMGOZ}

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	2026-05-18T01:33:23.409451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d355ddf305ef2bc2e812e7e3cdd86767110730c1191db36fadda8a508a21e7f

Aliases

arxiv: 1509.03390 · arxiv_version: 1509.03390v1 · doi: 10.48550/arxiv.1509.03390 · pith_short_12: BU2V3XZQL3ZL · pith_short_16: BU2V3XZQL3ZLYLUB · pith_short_8: BU2V3XZQ

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/BU2V3XZQL3ZLYLUBFZ7DZXMGOZ \
  | 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: 0d355ddf305ef2bc2e812e7e3cdd86767110730c1191db36fadda8a508a21e7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ce337e5273815fa01473c702bd5b1819ef817ba54d0d63510211f8320b8a7f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-09-11T05:14:51Z",
    "title_canon_sha256": "e12a72eb592f0a9e66ece2827dd5a15fe4cedf3a29688101fe6df0ab970d1f95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03390",
    "kind": "arxiv",
    "version": 1
  }
}