Pith Number

pith:VUXM2C6W

pith:2015:VUXM2C6WSFIYXE765STGDUZATY

not attested not anchored not stored refs pending

Ghost Cities Analysis Based on Positioning Data in China

Guanghua Chi, Haishan Wu, Yu Liu, Zhengwei Wu

arxiv:1510.08505 v2 · 2015-10-28 · cs.SI · cs.CY · 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{VUXM2C6WSFIYXE765STGDUZATY}

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	2026-05-18T01:25:56.653739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad2ecd0bd691518b93feeca661d3209e35f99da948a9f27aa6ffb2c9dc32a403

Aliases

arxiv: 1510.08505 · arxiv_version: 1510.08505v2 · doi: 10.48550/arxiv.1510.08505 · pith_short_12: VUXM2C6WSFIY · pith_short_16: VUXM2C6WSFIYXE76 · pith_short_8: VUXM2C6W

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/VUXM2C6WSFIYXE765STGDUZATY \
  | 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: ad2ecd0bd691518b93feeca661d3209e35f99da948a9f27aa6ffb2c9dc32a403

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cd0ef62668f52530900ea35f23960dfdce23139cc77bde0263e2081e3115182",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-10-28T21:51:51Z",
    "title_canon_sha256": "0f76d7390e67866af6721158acdca8243f8f732a24798282a54bad72191be743"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.08505",
    "kind": "arxiv",
    "version": 2
  }
}