Pith Number

pith:74Q7XCHU

pith:2026:74Q7XCHUZQFPFG3PH7HVO4F5KU

not attested not anchored not stored refs pending

Toward Skill-Native LLMs: Skill Entropy for Benchmarking and Training Long-Horizon Reasoning

Jiarui Liu, Lechen Zhang, Ling Yang, Mengdi Wang, Sanjeev Arora, Yingcheng Wu, Yinghui He, Yongjin Yang, Zhenfei Yin

arxiv:2608.05139 v1 · 2026-08-05 · cs.CL · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{74Q7XCHUZQFPFG3PH7HVO4F5KU}

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	2026-08-06T01:49:16.580821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff21fb88f4cc0af29b6f3fcf5770bd550109058a2e6d4e2f60a5f86ed0962c79

Aliases

arxiv: 2608.05139 · arxiv_version: 2608.05139v1 · doi: 10.48550/arxiv.2608.05139 · pith_short_12: 74Q7XCHUZQFP · pith_short_16: 74Q7XCHUZQFPFG3P · pith_short_8: 74Q7XCHU

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/74Q7XCHUZQFPFG3PH7HVO4F5KU \
  | 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: ff21fb88f4cc0af29b6f3fcf5770bd550109058a2e6d4e2f60a5f86ed0962c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "945277e73d1bb4b993b4e65cdb33b78e12ac53ce26a4539d5b8f56705c8173d5",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-08-05T17:57:16Z",
    "title_canon_sha256": "a2355bfdb2d20f4f4a6256f45aab0a4b997fa5b2f48c627a04e7cf5e51fe21ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.05139",
    "kind": "arxiv",
    "version": 1
  }
}