Pith Number

pith:F7PR7XMR

pith:2013:F7PR7XMRKNMT2XXWFQ4535QWXZ

not attested not anchored not stored refs pending

Geography and similarity of regional cuisines in China

Junming Huang, Qian-Ming Zhang, Tao Zhou, Yong-Yeol Ahn, Yu-Xiao Zhu, Zi-Ke Zhang

arxiv:1307.3185 v1 · 2013-07-11 · physics.soc-ph · cs.SI · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F7PR7XMRKNMT2XXWFQ4535QWXZ}

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	2026-05-18T03:06:32.472148Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fdf1fdd9153593d5ef62c39ddf616be5dc5fa4d93dbf757ebf2190e5c92bf5c

Aliases

arxiv: 1307.3185 · arxiv_version: 1307.3185v1 · doi: 10.48550/arxiv.1307.3185 · pith_short_12: F7PR7XMRKNMT · pith_short_16: F7PR7XMRKNMT2XXW · pith_short_8: F7PR7XMR

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/F7PR7XMRKNMT2XXWFQ4535QWXZ \
  | 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: 2fdf1fdd9153593d5ef62c39ddf616be5dc5fa4d93dbf757ebf2190e5c92bf5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2589c45a0a6565f3c7f95eb1667ddbf90f42f7cbe17731a9f479eeaab8c7c015",
    "cross_cats_sorted": [
      "cs.SI",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2013-07-11T16:58:58Z",
    "title_canon_sha256": "ab87072399ed302713576c9b009b2e7f26db2ccaa8b8a5b82f26a79a69c3b632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3185",
    "kind": "arxiv",
    "version": 1
  }
}