Pith Number

pith:36ABWOOR

pith:2018:36ABWOOR5QHTKLHQB5IPERAYFH

not attested not anchored not stored refs pending

Evolution of urban scaling: evidence from Brazil

Camilo Rodrigues Neto, Claudia Rebeca Binder, Fabiano Lemes Ribeiro, Fernando Fagundes Ferreira, Joao Meirelles

arxiv:1807.02292 v2 · 2018-07-06 · 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{36ABWOOR5QHTKLHQB5IPERAYFH}

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	2026-05-18T00:00:18.985140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df801b39d1ec0f352cf00f50f2441829ffe24670b71f184d60b65fcae8696696

Aliases

arxiv: 1807.02292 · arxiv_version: 1807.02292v2 · doi: 10.48550/arxiv.1807.02292 · pith_short_12: 36ABWOOR5QHT · pith_short_16: 36ABWOOR5QHTKLHQ · pith_short_8: 36ABWOOR

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/36ABWOOR5QHTKLHQB5IPERAYFH \
  | 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: df801b39d1ec0f352cf00f50f2441829ffe24670b71f184d60b65fcae8696696

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0432375e596c4d4bb60cb39486f567d100be75cba515c13e77ef50b79ab695a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-07-06T07:39:20Z",
    "title_canon_sha256": "9666e6839531e1f33626c13d12489f6c3a38a4e73c21e3e69570af00c0f54601"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02292",
    "kind": "arxiv",
    "version": 2
  }
}