Pith Number

pith:GYHULLB5

pith:2014:GYHULLB5VWGB6RMSHMBZ2OUDU2

not attested not anchored not stored refs pending

A high-reproducibility and high-accuracy method for automated topic classification

Andrea Lancichinetti, Daniel Acuna, Jane X. Wang, Konrad K\"ording, Lu\'is A. Nunes Amaral, M. Irmak Sirer

arxiv:1402.0422 v1 · 2014-02-03 · stat.ML · cs.IR · cs.LG · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GYHULLB5VWGB6RMSHMBZ2OUDU2}

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	2026-05-18T03:00:15.346495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

360f45ac3dad8c1f45923b039d3a83a6989d139966341357e1fe321ed87f08d9

Aliases

arxiv: 1402.0422 · arxiv_version: 1402.0422v1 · doi: 10.48550/arxiv.1402.0422 · pith_short_12: GYHULLB5VWGB · pith_short_16: GYHULLB5VWGB6RMS · pith_short_8: GYHULLB5

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/GYHULLB5VWGB6RMSHMBZ2OUDU2 \
  | 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: 360f45ac3dad8c1f45923b039d3a83a6989d139966341357e1fe321ed87f08d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17963812a8a07911cfffc789ee9eeea5ba4ee191a3ac926e8a52f3bb7fc41b20",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2014-02-03T16:45:13Z",
    "title_canon_sha256": "23efd2e99553ee2b712e94fdcbf18f3e9d06b4f4887b5c577f67fc4ac02f439c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0422",
    "kind": "arxiv",
    "version": 1
  }
}