Pith Number

pith:IFZ63O7O

pith:2016:IFZ63O7OFX3C27HDPBXRKNQT5Q

not attested not anchored not stored refs pending

Hierarchical Scaling in Systems of Natural Cities

Bin Jiang, Yanguang Chen

arxiv:1608.05770 v2 · 2016-08-20 · physics.soc-ph · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IFZ63O7OFX3C27HDPBXRKNQT5Q}

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	2026-05-17T23:58:05.739655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4173edbbee2df62d7ce3786f153613ec1e628b5d3fa1e994329eee6931712212

Aliases

arxiv: 1608.05770 · arxiv_version: 1608.05770v2 · doi: 10.48550/arxiv.1608.05770 · pith_short_12: IFZ63O7OFX3C · pith_short_16: IFZ63O7OFX3C27HD · pith_short_8: IFZ63O7O

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/IFZ63O7OFX3C27HDPBXRKNQT5Q \
  | 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: 4173edbbee2df62d7ce3786f153613ec1e628b5d3fa1e994329eee6931712212

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c00db48daf64c1a0fb840e4ddaa8bd08c5a0cd94c2736365d8d87804c806159b",
    "cross_cats_sorted": [
      "nlin.AO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2016-08-20T02:38:49Z",
    "title_canon_sha256": "87a97a173b530b6e22790e38e8f592d5052de34762cf0431a7623650c3fc7ef7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.05770",
    "kind": "arxiv",
    "version": 2
  }
}