Pith Number

pith:Q4ZPZD2P

pith:2026:Q4ZPZD2PSGA2LWHLYBXZY3Y453

not attested not anchored not stored refs pending

Reconstructing Item Characteristic Curves using Fine-Tuned Large Language Models

Christopher Ormerod

arxiv:2601.02580 v2 · 2026-01-05 · cs.CL · 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{Q4ZPZD2PSGA2LWHLYBXZY3Y453}

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	2026-07-28T00:21:33.407776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8732fc8f4f9181a5d8ebc06f9c6f1ceefc77ae7bf47e84dfe2dc4990c4bb869e

Aliases

arxiv: 2601.02580 · arxiv_version: 2601.02580v2 · doi: 10.48550/arxiv.2601.02580 · pith_short_12: Q4ZPZD2PSGA2 · pith_short_16: Q4ZPZD2PSGA2LWHL · pith_short_8: Q4ZPZD2P

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/Q4ZPZD2PSGA2LWHLYBXZY3Y453 \
  | 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: 8732fc8f4f9181a5d8ebc06f9c6f1ceefc77ae7bf47e84dfe2dc4990c4bb869e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "664997567942a0f50547025321f951c36d96b7642cbc43f885b7c68d931f21d1",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-01-05T22:11:41Z",
    "title_canon_sha256": "8a19c1d77bcdefa453fabd16efa553789b3434c63bb30ecaca9546ecf0c7016e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.02580",
    "kind": "arxiv",
    "version": 2
  }
}