Pith Number

pith:XUX3YGOB

pith:2017:XUX3YGOBC2TE52DEB6C7ZN2NQF

not attested not anchored not stored refs pending

The efficient, the intensive, and the productive: insights from urban Kaya scaling

Bin Zhou, Diego Rybski, J\"urgen P. Kropp, Matthias K. B. L\"udeke, Ramana Gudipudi, Zhu Liu

arxiv:1705.01153 v2 · 2017-05-02 · physics.soc-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XUX3YGOBC2TE52DEB6C7ZN2NQF}

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	2026-05-18T00:20:52.326559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd2fbc19c116a64ee8640f85fcb74d81424924fae9fa9b48fb91aa43edbe32d2

Aliases

arxiv: 1705.01153 · arxiv_version: 1705.01153v2 · doi: 10.48550/arxiv.1705.01153 · pith_short_12: XUX3YGOBC2TE · pith_short_16: XUX3YGOBC2TE52DE · pith_short_8: XUX3YGOB

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/XUX3YGOBC2TE52DEB6C7ZN2NQF \
  | 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: bd2fbc19c116a64ee8640f85fcb74d81424924fae9fa9b48fb91aa43edbe32d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d662dbba7b5d23403728fe5f7dd2e477588528b6b74c9ac233c54ed29a26e7c4",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2017-05-02T19:43:56Z",
    "title_canon_sha256": "6bec1142cc615274036c3c6be5547548a479ba83f7e553fb07fb493ecf3de179"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01153",
    "kind": "arxiv",
    "version": 2
  }
}