Pith Number

pith:4J5NQT4C

pith:2024:4J5NQT4CASVH63HMAB3WGXOYET

not attested not anchored not stored refs pending

Frogs, hats and common subsequences

Alex Parker, Chris Wells, Coy Schwieder, Joseph Briggs

arxiv:2404.07285 v2 · 2024-04-10 · math.CO · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4J5NQT4CASVH63HMAB3WGXOYET}

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	2026-07-05T10:35:32.270350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e27ad84f8204aa7f6cec0077635dd824e01619db2a58b6727bdecd64cf86ee44

Aliases

arxiv: 2404.07285 · arxiv_version: 2404.07285v2 · doi: 10.48550/arxiv.2404.07285 · pith_short_12: 4J5NQT4CASVH · pith_short_16: 4J5NQT4CASVH63HM · pith_short_8: 4J5NQT4C

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/4J5NQT4CASVH63HMAB3WGXOYET \
  | 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: e27ad84f8204aa7f6cec0077635dd824e01619db2a58b6727bdecd64cf86ee44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57f7faaf68be16aa6693a07ed0baeb3db15cc6061893abb83b86dcb93b6adea3",
    "cross_cats_sorted": [
      "math.PR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2024-04-10T18:28:47Z",
    "title_canon_sha256": "5f6fc151cab39dba5ffe2570f1cfccc7721a9b3dcda04ce3e0da1e3f7dff7b22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.07285",
    "kind": "arxiv",
    "version": 2
  }
}