Pith Number

pith:2WMJAQPD

pith:2014:2WMJAQPDZYGV54LEBAEBEW4SIL

not attested not anchored not stored refs pending

The systematic structure and predictability of urban business diversity

Deborah Strumsky, Geoffrey B. West, Horacio Samaniego, Hyejin Youn, Jos\'e Lobo, Lu\'is M. A. Bettencourt

arxiv:1405.3202 v1 · 2014-05-13 · physics.soc-ph · physics.data-an · q-fin.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2WMJAQPDZYGV54LEBAEBEW4SIL}

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	2026-05-18T01:21:45.280921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5989041e3ce0d5ef1640808125b9242d6aa69abc340489308d5f12901b9fce8

Aliases

arxiv: 1405.3202 · arxiv_version: 1405.3202v1 · doi: 10.48550/arxiv.1405.3202 · pith_short_12: 2WMJAQPDZYGV · pith_short_16: 2WMJAQPDZYGV54LE · pith_short_8: 2WMJAQPD

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/2WMJAQPDZYGV54LEBAEBEW4SIL \
  | 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: d5989041e3ce0d5ef1640808125b9242d6aa69abc340489308d5f12901b9fce8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e43c3d1b62b7eeb5a29481f32e97c967af7e3ce69e5aef04840ec95e007bb6df",
    "cross_cats_sorted": [
      "physics.data-an",
      "q-fin.GN"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2014-05-13T15:54:56Z",
    "title_canon_sha256": "e32329df8d18d280f0d2944fc0d2053a6ff15fe5b4873b8f22ce8c65ea43afdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3202",
    "kind": "arxiv",
    "version": 1
  }
}