Pith Number

pith:OCJUCVP4

pith:2009:OCJUCVP4FFEPPQ6JV6KDZO7N7L

not attested not anchored not stored refs pending

Concept Stability for Constructing Taxonomies of Web-site Users

Dmitry I. Ignatov, Sergei O. Kuznetsov

arxiv:0905.1424 v2 · 2009-05-09 · cs.CY · cs.AI · cs.SI · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OCJUCVP4FFEPPQ6JV6KDZO7N7L}

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	2026-05-18T00:56:47.184679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70934155fc2948f7c3c9af943cbbedfaf26a989596bad63478316140b61b6363

Aliases

arxiv: 0905.1424 · arxiv_version: 0905.1424v2 · doi: 10.48550/arxiv.0905.1424 · pith_short_12: OCJUCVP4FFEP · pith_short_16: OCJUCVP4FFEPPQ6J · pith_short_8: OCJUCVP4

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/OCJUCVP4FFEPPQ6JV6KDZO7N7L \
  | 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: 70934155fc2948f7c3c9af943cbbedfaf26a989596bad63478316140b61b6363

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "588e8b5865f4f18b53016b341147cea5cf9e098dc113ed30d4ba1021b9048aa5",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.SI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2009-05-09T18:35:50Z",
    "title_canon_sha256": "a1e9aa7b96f4a8b59ae831dfda4bcf2efc7b45310975a2d433103071113e7de9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1424",
    "kind": "arxiv",
    "version": 2
  }
}