Pith Number

pith:P54ECIJF

pith:2010:P54ECIJF5MWDFZOQWSMMTGKRI4

not attested not anchored not stored refs pending

City Size Distributions For India and China

B. Basu, Kausik Gangopadhyay

arxiv:1001.0828 v1 · 2010-01-06 · 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{P54ECIJF5MWDFZOQWSMMTGKRI4}

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	2026-05-18T02:10:04.603923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f78412125eb2c32e5d0b498c99951471656a4012b0a5d281c582e820cf1b093

Aliases

arxiv: 1001.0828 · arxiv_version: 1001.0828v1 · doi: 10.48550/arxiv.1001.0828 · pith_short_12: P54ECIJF5MWD · pith_short_16: P54ECIJF5MWDFZOQ · pith_short_8: P54ECIJF

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/P54ECIJF5MWDFZOQWSMMTGKRI4 \
  | 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: 7f78412125eb2c32e5d0b498c99951471656a4012b0a5d281c582e820cf1b093

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df895dc1d86f6064126af9434e18b914f8a2d0baf4b1ff1c7b595229ab34ebb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2010-01-06T07:29:52Z",
    "title_canon_sha256": "49202aee4530b225482d47b156f653449f292f6c64961661dfa29df61581cf54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.0828",
    "kind": "arxiv",
    "version": 1
  }
}