Pith Number

pith:S7TSH56X

pith:2009:S7TSH56XY4TNTQ5UE3P7FYRRT4

not attested not anchored not stored refs pending

Random planar graphs and the London street network

A. Crooks, A. P. Masucci, D. Smith, M. Batty

arxiv:0903.5440 v1 · 2009-03-31 · physics.data-an · 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{S7TSH56XY4TNTQ5UE3P7FYRRT4}

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	2026-07-04T15:49:00.147951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97e723f7d7c726d9c3b426dff2e2319f162e7dd3bb0c684bb0b084232089a51c

Aliases

arxiv: 0903.5440 · arxiv_version: 0903.5440v1 · doi: 10.48550/arxiv.0903.5440 · pith_short_12: S7TSH56XY4TN · pith_short_16: S7TSH56XY4TNTQ5U · pith_short_8: S7TSH56X

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/S7TSH56XY4TNTQ5UE3P7FYRRT4 \
  | 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: 97e723f7d7c726d9c3b426dff2e2319f162e7dd3bb0c684bb0b084232089a51c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65cf584be82f552610beeec82d436ea0e64720e749e90c3289dd406b247a56f1",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2009-03-31T12:20:01Z",
    "title_canon_sha256": "71834edc819d1c5007b912c8cdff249736faff42887bc064e34ff16468bb595d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5440",
    "kind": "arxiv",
    "version": 1
  }
}