Pith Number

pith:ENKW6MJM

pith:2011:ENKW6MJMY4TUJ5KSSYTCYTER66

not attested not anchored not stored refs pending

Need to categorize: A comparative look at the categories of the Universal Decimal Classification system (UDC) and Wikipedia

Almila Akdag Salah, Andrea Scharnhorst, Cheng Gao, Krzysztof Suchecki

arxiv:1105.5912 v1 · 2011-05-30 · cs.DL · cs.IR · 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{ENKW6MJMY4TUJ5KSSYTCYTER66}

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	2026-05-18T04:21:01.285947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23556f312cc72744f55296262c4c91f7a663644192ed4e5af030d57203f91fa9

Aliases

arxiv: 1105.5912 · arxiv_version: 1105.5912v1 · doi: 10.48550/arxiv.1105.5912 · pith_short_12: ENKW6MJMY4TU · pith_short_16: ENKW6MJMY4TUJ5KS · pith_short_8: ENKW6MJM

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/ENKW6MJMY4TUJ5KSSYTCYTER66 \
  | 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: 23556f312cc72744f55296262c4c91f7a663644192ed4e5af030d57203f91fa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f40d8e8b9c33ac3db12f47d1cd800b06e2ae83bd60998a36293d97cf6c11be43",
    "cross_cats_sorted": [
      "cs.IR",
      "physics.soc-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2011-05-30T09:22:14Z",
    "title_canon_sha256": "1a5ad3247c6fa836d899a403bda907528d250c1105992624bd30673f7d4ccb5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5912",
    "kind": "arxiv",
    "version": 1
  }
}