Pith Number

pith:DFZDVWZQ

pith:2025:DFZDVWZQOYQGG6LIAU3SVPC2WO

not attested not anchored not stored refs pending

Mathematical reasoning and the computer

Kevin Buzzard

arxiv:2502.07850 v1 · 2025-02-11 · 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{DFZDVWZQOYQGG6LIAU3SVPC2WO}

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	2026-07-05T10:13:11.069419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19723adb30762063796805372abc5ab3aa14d82c48129e0f8c58b347ab56c860

Aliases

arxiv: 2502.07850 · arxiv_version: 2502.07850v1 · doi: 10.48550/arxiv.2502.07850 · pith_short_12: DFZDVWZQOYQG · pith_short_16: DFZDVWZQOYQGG6LI · pith_short_8: DFZDVWZQ

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/DFZDVWZQOYQGG6LIAU3SVPC2WO \
  | 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: 19723adb30762063796805372abc5ab3aa14d82c48129e0f8c58b347ab56c860

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6eb1357c97b5ace626590895eb2462750a226fb6298b97f34bac5ed529bd6da7",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-02-11T10:35:52Z",
    "title_canon_sha256": "af4ed5f65c8dacc30b95d455247bb55ada94d807d7b50edf1ee839fc597c8e4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.07850",
    "kind": "arxiv",
    "version": 1
  }
}