Pith Number

pith:52TLJPML

pith:2011:52TLJPMLZWJXZP2KLOTE7H6PN7

not attested not anchored not stored refs pending

A tale of many cities: universal patterns in human urban mobility

Anastasios Noulas, Cecilia Mascolo, Massimiliano Pontil, Renaud Lambiotte, Salvatore Scellato

arxiv:1108.5355 v4 · 2011-08-24 · physics.soc-ph · cs.SI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52TLJPMLZWJXZP2KLOTE7H6PN7}

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	2026-05-18T02:00:45.791470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eea6b4bd8bcd937cbf4a5ba64f9fcf6fdd828fafbf98bb1a62c0bd3b1a542ac7

Aliases

arxiv: 1108.5355 · arxiv_version: 1108.5355v4 · doi: 10.48550/arxiv.1108.5355 · pith_short_12: 52TLJPMLZWJX · pith_short_16: 52TLJPMLZWJXZP2K · pith_short_8: 52TLJPML

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/52TLJPMLZWJXZP2KLOTE7H6PN7 \
  | 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: eea6b4bd8bcd937cbf4a5ba64f9fcf6fdd828fafbf98bb1a62c0bd3b1a542ac7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83ab90ed45f147b55a4d1269c1f727d3c171f8cbec7349eb485947c7290dd809",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-08-24T19:49:45Z",
    "title_canon_sha256": "f8ff43ac9a2884e744a5b5246af6f2c06e87f70ff06f11b183aa2a4b7fefb7ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5355",
    "kind": "arxiv",
    "version": 4
  }
}