Pith Number

pith:CXNSU374

pith:2026:CXNSU3745B2NGTOIOI74WJSHG4

not attested not anchored not stored refs pending

HiSkill: Empowering LLM Agents with Hierarchical Skill Graphs

Cheng Yang, Chuan Shi, Jinxuan Cai, Qi Zhang, Yawen Li, Yu Hao, Zhiqiang Zhang

arxiv:2607.25853 v1 · 2026-07-28 · 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{CXNSU3745B2NGTOIOI74WJSHG4}

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	2026-07-29T01:26:06.801025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15db2a6ffce874d34dc8723fcb2647371d84bfcd355cacff35ecde9646ce2e11

Aliases

arxiv: 2607.25853 · arxiv_version: 2607.25853v1 · doi: 10.48550/arxiv.2607.25853 · pith_short_12: CXNSU3745B2N · pith_short_16: CXNSU3745B2NGTOI · pith_short_8: CXNSU374

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/CXNSU3745B2NGTOIOI74WJSHG4 \
  | 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: 15db2a6ffce874d34dc8723fcb2647371d84bfcd355cacff35ecde9646ce2e11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86f82f18da52a5d89a1b774640e02a1576a83aeb68029edbe27ca830d25be1e5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-28T15:25:47Z",
    "title_canon_sha256": "be6acfb8146b79cfd3baa60e8061fcf933a7c5998584a9cf59351f0cdd115658"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.25853",
    "kind": "arxiv",
    "version": 1
  }
}