Pith Number

pith:NZ3PTLDJ

pith:2025:NZ3PTLDJCVK3SAAUG4DJKOS5AK

not attested not anchored not stored refs pending

Formally Solving Answer-Construction Problems in Lean

Ao Li, Chris J. Maddison, Jialiang Sun, Kuldeep S. Meel, Yuzhi Tang

arxiv:2505.18492 v5 · 2025-05-24 · 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{NZ3PTLDJCVK3SAAUG4DJKOS5AK}

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	2026-06-02T02:04:06.275584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e76f9ac691555b900143706953a5d02be544ed48b244d05c54d29f0c18ad57f

Aliases

arxiv: 2505.18492 · arxiv_version: 2505.18492v5 · doi: 10.48550/arxiv.2505.18492 · pith_short_12: NZ3PTLDJCVK3 · pith_short_16: NZ3PTLDJCVK3SAAU · pith_short_8: NZ3PTLDJ

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/NZ3PTLDJCVK3SAAUG4DJKOS5AK \
  | 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: 6e76f9ac691555b900143706953a5d02be544ed48b244d05c54d29f0c18ad57f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84f4f6d3e524805dba2172c7446e5e63b1ac3f14f1fc0ca54965381832bb0584",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-05-24T03:52:25Z",
    "title_canon_sha256": "c1fd260230ba27c9e2ea0ad8b3d9f6d3c97d5678243919913277226cff6653b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.18492",
    "kind": "arxiv",
    "version": 5
  }
}