Pith Number

pith:53KJPGJV

pith:2016:53KJPGJVJZ3MWH6UYHWHMBV44B

not attested not anchored not stored refs pending

Patent Portfolio Analysis of Cities: Statistics and Maps of Technological Inventiveness

Dieter Franz Kogler, Gaston Heimeriks, Loet Leydesdorff

arxiv:1612.05810 v1 · 2016-12-17 · cs.DL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{53KJPGJVJZ3MWH6UYHWHMBV44B}

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	2026-05-18T00:54:46.663662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed49799354e76cb1fd4c1ec7606bce0738d00d6194d555b44fcfd5b3e2778fd

Aliases

arxiv: 1612.05810 · arxiv_version: 1612.05810v1 · doi: 10.48550/arxiv.1612.05810 · pith_short_12: 53KJPGJVJZ3M · pith_short_16: 53KJPGJVJZ3MWH6U · pith_short_8: 53KJPGJV

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/53KJPGJVJZ3MWH6UYHWHMBV44B \
  | 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: eed49799354e76cb1fd4c1ec7606bce0738d00d6194d555b44fcfd5b3e2778fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28d09e5e018f721785434fcf24e0fee2f86cf652ff6d9133d48056ad335fa88f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2016-12-17T19:15:39Z",
    "title_canon_sha256": "6ea61b9403af5ca1504293a2c9103f6201d78bf0af820a2dcc5ce79d437f4d8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05810",
    "kind": "arxiv",
    "version": 1
  }
}