Pith Number

pith:U2QTZNZI

pith:2010:U2QTZNZILWBOGFGF5ZA54VPXOM

not attested not anchored not stored refs pending

A model for the emergence of geopolitical division

M. N. Kuperman

arxiv:1007.0229 v1 · 2010-07-01 · 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{U2QTZNZILWBOGFGF5ZA54VPXOM}

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	2026-05-18T04:34:55.257123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a13cb7285d82e314c5ee41de55f77320db68cc7505bfea441c56629aa29c7f

Aliases

arxiv: 1007.0229 · arxiv_version: 1007.0229v1 · doi: 10.48550/arxiv.1007.0229 · pith_short_12: U2QTZNZILWBO · pith_short_16: U2QTZNZILWBOGFGF · pith_short_8: U2QTZNZI

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/U2QTZNZILWBOGFGF5ZA54VPXOM \
  | 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: a6a13cb7285d82e314c5ee41de55f77320db68cc7505bfea441c56629aa29c7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f37e03e1b9dfc752767d4ad6e987f6b8da7cc02c9a398805986f4bc64777628",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.AO",
    "submitted_at": "2010-07-01T18:40:45Z",
    "title_canon_sha256": "e8c9193bc058a9aaf61a1befc824251e82a17432fed03d2c9c7686d9bea1d12c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.0229",
    "kind": "arxiv",
    "version": 1
  }
}