Pith Number

pith:FB2JCOWN

pith:2019:FB2JCOWNL32Q3QAYF4QDCAPEVU

not attested not anchored not stored refs pending

Using Supervised Learning to Classify Metadata of Research Data by Discipline of Research

Dieter Kranzlm\"uller, Michael Fromm, Nelson Tavares de Sousa, Tobias Weber

arxiv:1910.09313 v1 · 2019-10-16 · cs.IR · cs.DL · cs.LG · 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{FB2JCOWNL32Q3QAYF4QDCAPEVU}

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	2026-07-05T00:13:32.601890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2874913acd5ef50dc0182f203101e4ad10319b4cf2e0efdc972b01df3e0c38ad

Aliases

arxiv: 1910.09313 · arxiv_version: 1910.09313v1 · doi: 10.48550/arxiv.1910.09313 · pith_short_12: FB2JCOWNL32Q · pith_short_16: FB2JCOWNL32Q3QAY · pith_short_8: FB2JCOWN

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/FB2JCOWNL32Q3QAYF4QDCAPEVU \
  | 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: 2874913acd5ef50dc0182f203101e4ad10319b4cf2e0efdc972b01df3e0c38ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5360800b19c214ecdb2331538be55d9c4a6335c634182b6aa987f239e19bace3",
    "cross_cats_sorted": [
      "cs.DL",
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-10-16T07:51:37Z",
    "title_canon_sha256": "9d6423b0e1b222d4902c52124774698230189171188125a07cae5d57ea12f8b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.09313",
    "kind": "arxiv",
    "version": 1
  }
}