Pith Number

pith:2BYQD3OK

pith:2025:2BYQD3OKP63GJ2QGO7EYDYWCKU

not attested not anchored not stored refs pending

Can ChatGPT Learn to Count Letters?

Fabrizio Lombardi, Gonzalo Mart\'inez, Javier Conde, Pedro Reviriego, Shanshan Liu, Zhen Gao

arxiv:2502.16705 v1 · 2025-02-23 · 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{2BYQD3OKP63GJ2QGO7EYDYWCKU}

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	2026-07-05T10:18:57.997771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d07101edca7fb664ea0677c981e2c2550ec31cd910bc1f7b63320718d58b8973

Aliases

arxiv: 2502.16705 · arxiv_version: 2502.16705v1 · doi: 10.48550/arxiv.2502.16705 · pith_short_12: 2BYQD3OKP63G · pith_short_16: 2BYQD3OKP63GJ2QG · pith_short_8: 2BYQD3OK

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/2BYQD3OKP63GJ2QGO7EYDYWCKU \
  | 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: d07101edca7fb664ea0677c981e2c2550ec31cd910bc1f7b63320718d58b8973

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2be720ba41521a410e431423a405f15ef818ba03ad1410764a17b51fffd0da0b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-02-23T20:31:22Z",
    "title_canon_sha256": "fc7a119648f46d13330bab3ee40757203e7cfffd5bb62c4f8741872dafcb34af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.16705",
    "kind": "arxiv",
    "version": 1
  }
}