Pith Number

pith:DBPQIA4I

pith:2026:DBPQIA4IOS3CZ3ES7GHPS67BQF

not attested not anchored not stored refs pending

L2-Bench: An Evaluation Benchmark for Measuring LLM Capabilities in Second Language Education

Ben Knight, Danielle Carvalho, James Edgell, Martin Ku, Wm. Matthew Kennedy

arxiv:2607.08842 v1 · 2026-07-09 · 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{DBPQIA4IOS3CZ3ES7GHPS67BQF}

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	2026-07-13T00:17:21.466137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

185f04038874b62cec92f98ef97be1814b2f25635dfa2886d54d802446f65714

Aliases

arxiv: 2607.08842 · arxiv_version: 2607.08842v1 · doi: 10.48550/arxiv.2607.08842 · pith_short_12: DBPQIA4IOS3C · pith_short_16: DBPQIA4IOS3CZ3ES · pith_short_8: DBPQIA4I

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/DBPQIA4IOS3CZ3ES7GHPS67BQF \
  | 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: 185f04038874b62cec92f98ef97be1814b2f25635dfa2886d54d802446f65714

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24b39911c8b6c6e9b3a5f4fd298f7d5464cc6bfeafb882604d0a7e7f0ab9ca02",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2026-07-09T18:02:55Z",
    "title_canon_sha256": "95f1a3f4c1baf429005413034c34dacdd9c10d51123041917ad4b0d3468678d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.08842",
    "kind": "arxiv",
    "version": 1
  }
}