Pith Number

pith:RXVALM3K

pith:2022:RXVALM3KDMDQZ3K25OC4DZ4CYH

not attested not anchored not stored refs pending

Place-level urban-rural indices for the United States from 1930 to 2018

Catherine B. Talbot, Cyrus Hester, Dylan S. Connor, Jeremiah J. Nieves, Johannes H. Uhl, Lori M. Hunter, Myron Gutmann, Stefan Leyk

arxiv:2202.13767 v1 · 2022-02-18 · physics.soc-ph · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXVALM3KDMDQZ3K25OC4DZ4CYH}

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	2026-07-05T06:05:11.263064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dea05b36a1b070ced5aeb85c1e782c1dc25e136a77821737e494ec6ccf87cb9

Aliases

arxiv: 2202.13767 · arxiv_version: 2202.13767v1 · doi: 10.48550/arxiv.2202.13767 · pith_short_12: RXVALM3KDMDQ · pith_short_16: RXVALM3KDMDQZ3K2 · pith_short_8: RXVALM3K

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/RXVALM3KDMDQZ3K25OC4DZ4CYH \
  | 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: 8dea05b36a1b070ced5aeb85c1e782c1dc25e136a77821737e494ec6ccf87cb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfea8b8598590c1d31b92a6a0dd98bfe9e53c3208816f7164be43195a7d64d20",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2022-02-18T23:38:16Z",
    "title_canon_sha256": "4104d90e6ac9efc40034216c66d1ebc445e5f839195fac34f1c8dcbc3f5b978c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13767",
    "kind": "arxiv",
    "version": 1
  }
}