Pith Number

pith:SAA32E5W

pith:2019:SAA32E5WM3BALTPENIXHPN32S6

not attested not anchored not stored refs pending

Uncovering the Semantics of Wikipedia Categories

Heiko Paulheim, Nicolas Heist

arxiv:1906.12089 v1 · 2019-06-28 · cs.IR · cs.AI · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SAA32E5WM3BALTPENIXHPN32S6}

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	2026-05-17T23:41:59.294625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9001bd13b666c205cde46a2e77b77a9788be5c82674ad29010004563d3635c69

Aliases

arxiv: 1906.12089 · arxiv_version: 1906.12089v1 · doi: 10.48550/arxiv.1906.12089 · pith_short_12: SAA32E5WM3BA · pith_short_16: SAA32E5WM3BALTPE · pith_short_8: SAA32E5W

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/SAA32E5WM3BALTPENIXHPN32S6 \
  | 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: 9001bd13b666c205cde46a2e77b77a9788be5c82674ad29010004563d3635c69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1c78c934eda98db03f92aafabdc749e22c1271308a23bc8d05a321a346cd763",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-06-28T08:32:46Z",
    "title_canon_sha256": "e6153db645755ad0c63243e40b75287849b83129da6df4bd92f537abd6fef578"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12089",
    "kind": "arxiv",
    "version": 1
  }
}