Pith Number

pith:6PRRFUKH

pith:2019:6PRRFUKHFK36DNWACGQDOQWOW4

not attested not anchored not stored refs pending

Unravelling the forces underlying urban industrial agglomeration

Francois Hulot, Mariano Beguerisse-D\'iaz, Neave O'Clery, Samuel Heroy

arxiv:1903.09279 v2 · 2019-03-22 · econ.GN · q-fin.EC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6PRRFUKHFK36DNWACGQDOQWOW4}

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	2026-05-17T23:44:07.008685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3e312d1472ab7e1b6c011a03742ceb70768a4d6e18a17ad6150fb520166b3fc

Aliases

arxiv: 1903.09279 · arxiv_version: 1903.09279v2 · doi: 10.48550/arxiv.1903.09279 · pith_short_12: 6PRRFUKHFK36 · pith_short_16: 6PRRFUKHFK36DNWA · pith_short_8: 6PRRFUKH

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/6PRRFUKHFK36DNWACGQDOQWOW4 \
  | 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: f3e312d1472ab7e1b6c011a03742ceb70768a4d6e18a17ad6150fb520166b3fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b5f6b46cf1ed58fca9db75558b080ccacefd5807d303ee93648b56d3d423fe5",
    "cross_cats_sorted": [
      "q-fin.EC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.GN",
    "submitted_at": "2019-03-22T00:16:48Z",
    "title_canon_sha256": "9ba0074a90a233e2a6b991c521660e4df2d36b2a313fc2d4f1d1133af8a53284"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09279",
    "kind": "arxiv",
    "version": 2
  }
}