Pith Number

pith:37XF6EG5

pith:2020:37XF6EG5X6HWLD3EF2TC7HVW47

not attested not anchored not stored refs pending

Maintaining a Library of Formal Mathematics

Floris van Doorn, Gabriel Ebner, Robert Y. Lewis

arxiv:2004.03673 v2 · 2020-04-07 · cs.PL · cs.MS · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37XF6EG5X6HWLD3EF2TC7HVW47}

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	2026-07-05T01:22:01.228006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfee5f10ddbf8f658f642ea62f9eb6e7f9b9cad1b674b0dd9960089a5e9d9e33

Aliases

arxiv: 2004.03673 · arxiv_version: 2004.03673v2 · doi: 10.48550/arxiv.2004.03673 · pith_short_12: 37XF6EG5X6HW · pith_short_16: 37XF6EG5X6HWLD3E · pith_short_8: 37XF6EG5

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/37XF6EG5X6HWLD3EF2TC7HVW47 \
  | 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: dfee5f10ddbf8f658f642ea62f9eb6e7f9b9cad1b674b0dd9960089a5e9d9e33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3c4d9108852a45a68c5abce4ed9932a050eccebaf13b50f9275dda41d7add79",
    "cross_cats_sorted": [
      "cs.MS",
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2020-04-07T19:52:20Z",
    "title_canon_sha256": "0405bb999aab02af5f8548d94a0362c1b03970e3ff366df0b6245f8b8a10dcc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03673",
    "kind": "arxiv",
    "version": 2
  }
}