Pith Number

pith:QL7HKFXV

pith:2018:QL7HKFXV6EXCDDMEU5GLZWKLM3

not attested not anchored not stored refs pending

What has been Revealed by Urban Grid Data of Shanghai

Bo Fan, Yaohui Jin, Yongkun Wang

arxiv:1805.08570 v1 · 2018-05-22 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QL7HKFXV6EXCDDMEU5GLZWKLM3}

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	2026-05-18T00:15:25.935433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82fe7516f5f12e218d84a74cbcd94b66f4fb3c4a8b2fdb69a05e76a573696cfc

Aliases

arxiv: 1805.08570 · arxiv_version: 1805.08570v1 · doi: 10.48550/arxiv.1805.08570 · pith_short_12: QL7HKFXV6EXC · pith_short_16: QL7HKFXV6EXCDDME · pith_short_8: QL7HKFXV

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/QL7HKFXV6EXCDDMEU5GLZWKLM3 \
  | 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: 82fe7516f5f12e218d84a74cbcd94b66f4fb3c4a8b2fdb69a05e76a573696cfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44559d4367cdef5f098bb0346cd4dec0b88bb3d4ebc2d95d5891c9dc563c132c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-05-22T13:30:08Z",
    "title_canon_sha256": "e00fe73f16f6e56c5c7168e0082b99a6207c957f20df7ecfbbecb01c63febf71"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.08570",
    "kind": "arxiv",
    "version": 1
  }
}