Pith Number

pith:CNFDYYSH

pith:2026:CNFDYYSHEY75OB6TN5WFWLUYZY

not attested not anchored not stored refs pending

MechGeo: Autoformalizing and Proving Euclidean Geometry in Lean 4

Hao Shen, Junyu Guo, Lihong Zhi, Tian Cui, Yuxuan Xiao

arxiv:2608.02295 v1 · 2026-08-03 · cs.AI · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CNFDYYSHEY75OB6TN5WFWLUYZY}

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	2026-08-04T02:11:45.527390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

134a3c6247263fd707d36f6c5b2e98ce0f1316cc279431307b62617b7e1af96b

Aliases

arxiv: 2608.02295 · arxiv_version: 2608.02295v1 · doi: 10.48550/arxiv.2608.02295 · pith_short_12: CNFDYYSHEY75 · pith_short_16: CNFDYYSHEY75OB6T · pith_short_8: CNFDYYSH

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/CNFDYYSHEY75OB6TN5WFWLUYZY \
  | 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: 134a3c6247263fd707d36f6c5b2e98ce0f1316cc279431307b62617b7e1af96b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab11767845a97c92e072a6c04c6adebcd14281c19880c4ff671aeb65d394872b",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-08-03T14:24:12Z",
    "title_canon_sha256": "d748899cfc58388e37a2bae4cfcb4a12ca31b42b42db8dee77e14b268eed3a15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.02295",
    "kind": "arxiv",
    "version": 1
  }
}