Pith Number

pith:34CICPA6

pith:2013:34CICPA6LL6VJMW2MHLPJDOZSH

not attested not anchored not stored refs pending

Constructing cities, deconstructing scaling laws

1), (2) Center for Advanced Modeling, (3) Santa Fe Institute, (4) Department of Civil Engineering, Anders Johansson (4, Elsa Arcaute (1), Erez Hatna (2, Hyejin Youn (3), Michael Batty (1) ((1) Centre for Advanced Spatial Analysis (CASA), Peter Ferguson (1), The Johns Hopkins University, UK, UK), University College London, University of Bristol, USA

arxiv:1301.1674 v2 · 2013-01-08 · 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{34CICPA6LL6VJMW2MHLPJDOZSH}

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	2026-05-18T01:24:04.579611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

df04813c1e5afd54b2da61d6f48dd991c385fbc9ebe584ed1b6ddd6fa9d0e489

Aliases

arxiv: 1301.1674 · arxiv_version: 1301.1674v2 · doi: 10.48550/arxiv.1301.1674 · pith_short_12: 34CICPA6LL6V · pith_short_16: 34CICPA6LL6VJMW2 · pith_short_8: 34CICPA6

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/34CICPA6LL6VJMW2MHLPJDOZSH \
  | 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: df04813c1e5afd54b2da61d6f48dd991c385fbc9ebe584ed1b6ddd6fa9d0e489

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b90a5e75cf3705dce0c48f414a4340de437522fbe3944d4d2353a2de5fa4caf9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2013-01-08T20:59:10Z",
    "title_canon_sha256": "de0a47e05cbcdcdaef71aefee80d38121d669cd38070450aff6a1ad0ca87a38d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1674",
    "kind": "arxiv",
    "version": 2
  }
}