Pith Number

pith:TPJOXXL6

pith:2017:TPJOXXL67RIVZOG3DLID6KJQLN

not attested not anchored not stored refs pending

A worldwide model for boundaries of urban settlements

Erneson A. Oliveira, Hern\'an A. Makse, Jos\'e S. Andrade Jr., Vasco Furtado

arxiv:1711.06332 v2 · 2017-11-16 · 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{TPJOXXL67RIVZOG3DLID6KJQLN}

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	2026-05-18T00:15:10.002253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bd2ebdd7efc515cb8db1ad03f29305b6b20626278b68c6dfbb8a92433651c35

Aliases

arxiv: 1711.06332 · arxiv_version: 1711.06332v2 · doi: 10.48550/arxiv.1711.06332 · pith_short_12: TPJOXXL67RIV · pith_short_16: TPJOXXL67RIVZOG3 · pith_short_8: TPJOXXL6

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/TPJOXXL67RIVZOG3DLID6KJQLN \
  | 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: 9bd2ebdd7efc515cb8db1ad03f29305b6b20626278b68c6dfbb8a92433651c35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08cea90fbc6fe9ff2710fc603718f0149a0beae992464d6cd193d9bc91526d3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2017-11-16T22:20:30Z",
    "title_canon_sha256": "9b497c8cbd2bd97c3d856ff37c83342e4c6024964ea975fea07cad3fe30634d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.06332",
    "kind": "arxiv",
    "version": 2
  }
}