Pith Number

pith:P7S36CUM

pith:2012:P7S36CUMTO3C5XIXMFVXDJJE7K

not attested not anchored not stored refs pending

A Spatial Model of City Growth and Formation

Bowen Huang, David Aldous

arxiv:1209.5120 v1 · 2012-09-23 · physics.soc-ph · 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{P7S36CUMTO3C5XIXMFVXDJJE7K}

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	2026-05-18T03:44:59.182550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fe5bf0a8c9bb62edd17616b71a524faa758db62012c7b14a1fbacec8f512eed

Aliases

arxiv: 1209.5120 · arxiv_version: 1209.5120v1 · doi: 10.48550/arxiv.1209.5120 · pith_short_12: P7S36CUMTO3C · pith_short_16: P7S36CUMTO3C5XIX · pith_short_8: P7S36CUM

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/P7S36CUMTO3C5XIXMFVXDJJE7K \
  | 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: 7fe5bf0a8c9bb62edd17616b71a524faa758db62012c7b14a1fbacec8f512eed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc747e99ceff655facda82a986583d81f155bcc16af97a1899391f608fa8c7bb",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-09-23T22:26:27Z",
    "title_canon_sha256": "eb9aa8706cdccbbc5a7daa59426dda42f260cf9a0fb9401d6b08a5b76f921569"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5120",
    "kind": "arxiv",
    "version": 1
  }
}