Pith Number

pith:R4LUUNMF

pith:2026:R4LUUNMF2JNNGJ3XTFRF5T6VRC

not attested not anchored not stored refs pending

StructLens: A Structural Lens for Language Models via Maximum Spanning Trees

Frederikus Hudi, Haruki Sakajo, Hidetaka Kamigaito, Taro Watanabe, Yusuke Sakai

arxiv:2603.03328 v2 · 2026-02-10 · 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{R4LUUNMF2JNNGJ3XTFRF5T6VRC}

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	2026-05-20T00:04:27.328057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f174a3585d25ad3277799625ecfd588866d6688e6f43e9615f39b6afc267552

Aliases

arxiv: 2603.03328 · arxiv_version: 2603.03328v2 · doi: 10.48550/arxiv.2603.03328 · pith_short_12: R4LUUNMF2JNN · pith_short_16: R4LUUNMF2JNNGJ3X · pith_short_8: R4LUUNMF

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/R4LUUNMF2JNNGJ3XTFRF5T6VRC \
  | 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: 8f174a3585d25ad3277799625ecfd588866d6688e6f43e9615f39b6afc267552

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3eb9f5eb7c29d36a6769c4178763766ac7bf36e9b9d280cdd52bfdc7b730103",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-02-10T11:30:32Z",
    "title_canon_sha256": "648ecfaa035325e6475aa8d02edc25c924cd4b0506a71bcf155eafc39e65b477"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.03328",
    "kind": "arxiv",
    "version": 2
  }
}