Pith Number

pith:E65FIPFR

pith:2026:E65FIPFRMWCHWEZGVDFFBM66BQ

not attested not anchored not stored refs pending

Question Type, Cognitive Load, and CEFR Alignment: Evaluating LLM-Generated EFL Grammar Drill Exercises

Brendan Flanagan, Hiroaki Ogata, Steve Woollaston, Yuko Toyokawa

arxiv:2606.01592 v1 · 2026-06-01 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E65FIPFRMWCHWEZGVDFFBM66BQ}

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	2026-06-02T02:04:37.481490Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27ba543cb165847b1326a8ca50b3de0c24a9cbbdac1acc10b5b831ecc3e09d5a

Aliases

arxiv: 2606.01592 · arxiv_version: 2606.01592v1 · doi: 10.48550/arxiv.2606.01592 · pith_short_12: E65FIPFRMWCH · pith_short_16: E65FIPFRMWCHWEZG · pith_short_8: E65FIPFR

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/E65FIPFRMWCHWEZGVDFFBM66BQ \
  | 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: 27ba543cb165847b1326a8ca50b3de0c24a9cbbdac1acc10b5b831ecc3e09d5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35bbd776605cd5b411d4b1322fb0ac119ca3162186829200d1eb8e033c53cd00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2026-06-01T02:42:33Z",
    "title_canon_sha256": "b6f5ba8b25bcaa64a4243d8aefe075fb36a1775dcf95d0145a69924a3df37844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.01592",
    "kind": "arxiv",
    "version": 1
  }
}