Pith Number

pith:XPPJEYAQ

pith:2016:XPPJEYAQFY4OBHNGCDKUUXKPXV

not attested not anchored not stored refs pending

MetaZipf. (Re)producing knowledge about city size distributions

Clementine Cottineau

arxiv:1606.06162 v1 · 2016-06-20 · 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{XPPJEYAQFY4OBHNGCDKUUXKPXV}

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	2026-05-18T00:33:27.835182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbde9260102e38e09da610d54a5d4fbd549a6ea1ec6bf9a2f2d0781dec1b3e66

Aliases

arxiv: 1606.06162 · arxiv_version: 1606.06162v1 · doi: 10.48550/arxiv.1606.06162 · pith_short_12: XPPJEYAQFY4O · pith_short_16: XPPJEYAQFY4OBHNG · pith_short_8: XPPJEYAQ

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/XPPJEYAQFY4OBHNGCDKUUXKPXV \
  | 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: bbde9260102e38e09da610d54a5d4fbd549a6ea1ec6bf9a2f2d0781dec1b3e66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d666dc9046eb78c96b7272e0214d799d7e5961dd8c686d60a26ed970ff7edca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2016-06-20T15:03:42Z",
    "title_canon_sha256": "b826ebe2e8e5fab51debfab50b75ed85ce4998ea1125f500414cd2be5f88145d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.06162",
    "kind": "arxiv",
    "version": 1
  }
}