Pith Number

pith:HZO7U5BT

pith:2016:HZO7U5BTADRHUHCJ2SCUWFUMJO

not attested not anchored not stored refs pending

Structure of 311 Service Requests as a Signature of Urban Location

Cheng Qian, Constantine Kontokosta, Lingjing Wang, Stanislav Sobolevsky

arxiv:1611.06660 v1 · 2016-11-21 · physics.soc-ph · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HZO7U5BTADRHUHCJ2SCUWFUMJO}

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	2026-05-18T00:24:20.409750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e5dfa743300e27a1c49d4854b168c4ba9a81485095665b386c05b07c753a19d

Aliases

arxiv: 1611.06660 · arxiv_version: 1611.06660v1 · doi: 10.48550/arxiv.1611.06660 · pith_short_12: HZO7U5BTADRH · pith_short_16: HZO7U5BTADRHUHCJ · pith_short_8: HZO7U5BT

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/HZO7U5BTADRHUHCJ2SCUWFUMJO \
  | 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: 3e5dfa743300e27a1c49d4854b168c4ba9a81485095665b386c05b07c753a19d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e40c99fb0cd92e4133b885ccab0015067f46ffcb0eb57477b96b0775ec227faa",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2016-11-21T06:13:03Z",
    "title_canon_sha256": "e87dce1a48fd8e47efb886aff2c764f01afb5516878e56ec5eb3ab030354d5a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.06660",
    "kind": "arxiv",
    "version": 1
  }
}