Pith Number

pith:2UK3JAT4

pith:2013:2UK3JAT4U4Z6JCJOISEINVT3ZY

not attested not anchored not stored refs pending

Spot it(R) Solitaire

Donna A. Dietz

arxiv:1301.7058 v1 · 2013-01-26 · 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{2UK3JAT4U4Z6JCJOISEINVT3ZY}

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	2026-05-18T03:35:02.725724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d515b4827ca733e4892e448886d67bce35eaa77ff7de202387c257b65a2dea68

Aliases

arxiv: 1301.7058 · arxiv_version: 1301.7058v1 · doi: 10.48550/arxiv.1301.7058 · pith_short_12: 2UK3JAT4U4Z6 · pith_short_16: 2UK3JAT4U4Z6JCJO · pith_short_8: 2UK3JAT4

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/2UK3JAT4U4Z6JCJOISEINVT3ZY \
  | 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: d515b4827ca733e4892e448886d67bce35eaa77ff7de202387c257b65a2dea68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85983d423f2d601814b71b425b1872cabf9e1ce00f4899e7d8e68f7694a4f9ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-01-26T23:51:54Z",
    "title_canon_sha256": "9074721b8dd93042a4a41ae66f3d8b97f69ce84800d1da4e615a973f9f8853a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7058",
    "kind": "arxiv",
    "version": 1
  }
}