Pith Number

pith:L6NCUHYE

pith:2012:L6NCUHYE4TU4VLK7AQTBO65CCY

not attested not anchored not stored refs pending

Professional diversity and the productivity of cities

Horacio Samaniego, Hyejin Youn, Lu\'is M. A. Bettencourt

arxiv:1210.7335 v3 · 2012-10-27 · physics.soc-ph · cs.SI · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L6NCUHYE4TU4VLK7AQTBO65CCY}

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	2026-05-18T02:49:18.535443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f9a2a1f04e4e9caad5f0426177ba21626f59479cd3f845cad1221e82fcd9094

Aliases

arxiv: 1210.7335 · arxiv_version: 1210.7335v3 · doi: 10.48550/arxiv.1210.7335 · pith_short_12: L6NCUHYE4TU4 · pith_short_16: L6NCUHYE4TU4VLK7 · pith_short_8: L6NCUHYE

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/L6NCUHYE4TU4VLK7AQTBO65CCY \
  | 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: 5f9a2a1f04e4e9caad5f0426177ba21626f59479cd3f845cad1221e82fcd9094

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71ecd184e84a67a0fcc77a0dd8d0ff5c556f4168ea832864ab111431932754b8",
    "cross_cats_sorted": [
      "cs.SI",
      "physics.data-an"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-10-27T15:24:59Z",
    "title_canon_sha256": "e54faa6efc6cecdaabfd6b9b6cc3d91b07e5d782cbb260bed3fc27016d5fbcd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7335",
    "kind": "arxiv",
    "version": 3
  }
}