Pith Number

pith:NYLWGCIX

pith:2026:NYLWGCIX6KUDIAKDBRMBW5CXYA

not attested not anchored not stored refs pending

Mechanistically Interpreting the Role of Sample Difficulty in RLVR for LLMs

Jiajun Zhang, Weiwei Xing, Xiaohui Gao, Yue Cheng, Zhanxing Zhu, Zheng Wang

arxiv:2605.28388 v1 · 2026-05-27 · 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{NYLWGCIX6KUDIAKDBRMBW5CXYA}

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	2026-05-28T01:05:16.806529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e17630917f2a83401430c581b7457c004c7ae8447f0590e270eb8e55584553d

Aliases

arxiv: 2605.28388 · arxiv_version: 2605.28388v1 · doi: 10.48550/arxiv.2605.28388 · pith_short_12: NYLWGCIX6KUD · pith_short_16: NYLWGCIX6KUDIAKD · pith_short_8: NYLWGCIX

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/NYLWGCIX6KUDIAKDBRMBW5CXYA \
  | 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: 6e17630917f2a83401430c581b7457c004c7ae8447f0590e270eb8e55584553d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "034a83825d0962298fb22be8375c79501a808ddc0cd29f602d637d7a534aa26b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-27T12:25:57Z",
    "title_canon_sha256": "a171ea4e8538f4e0c39ebfb85e107b69668b0719a288b8365497839de571b993"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28388",
    "kind": "arxiv",
    "version": 1
  }
}