Pith Number

pith:4ZKW4GRX

pith:2016:4ZKW4GRXJ6SDVMRCWRAUQREMTL

not attested not anchored not stored refs pending

A data driven network approach to rank countries production diversity and food specialization

Chengyi Tu, Joel Carr, Samir Suweis

arxiv:1606.01270 v1 · 2016-06-03 · physics.soc-ph · q-fin.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ZKW4GRXJ6SDVMRCWRAUQREMTL}

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	2026-05-18T00:51:17.263724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6556e1a374fa43ab222b44148448c9af1ee8be3469038810509420e9869e621

Aliases

arxiv: 1606.01270 · arxiv_version: 1606.01270v1 · doi: 10.48550/arxiv.1606.01270 · pith_short_12: 4ZKW4GRXJ6SD · pith_short_16: 4ZKW4GRXJ6SDVMRC · pith_short_8: 4ZKW4GRX

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/4ZKW4GRXJ6SDVMRCWRAUQREMTL \
  | 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: e6556e1a374fa43ab222b44148448c9af1ee8be3469038810509420e9869e621

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1301abdda3e0752dda8d275fa72c4ea15e86baf2eaa4118cb6cd3d71e3a7abd5",
    "cross_cats_sorted": [
      "q-fin.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2016-06-03T20:33:03Z",
    "title_canon_sha256": "fc0312cb718ab6055f269994b73cae7750f3ca5b8e6ef21763249fb6791fefd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.01270",
    "kind": "arxiv",
    "version": 1
  }
}