Pith Number

pith:4JUFNHQ3

pith:2018:4JUFNHQ32RE44AMU2I4WL6RBAY

not attested not anchored not stored refs pending

Digital Urban Sensing: A Multi-layered Approach

Enwei Zhu, Maham Khan, Philipp Kats, Shreya Santosh Bamne, Stanislav Sobolevsky

arxiv:1809.01280 v1 · 2018-09-05 · physics.soc-ph · cs.CY · 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{4JUFNHQ32RE44AMU2I4WL6RBAY}

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	2026-05-18T00:06:28.136474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e268569e1bd449ce0194d23965fa21061e6226aaf0a043ff4ccb282d8f00f089

Aliases

arxiv: 1809.01280 · arxiv_version: 1809.01280v1 · doi: 10.48550/arxiv.1809.01280 · pith_short_12: 4JUFNHQ32RE4 · pith_short_16: 4JUFNHQ32RE44AMU · pith_short_8: 4JUFNHQ3

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/4JUFNHQ32RE44AMU2I4WL6RBAY \
  | 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: e268569e1bd449ce0194d23965fa21061e6226aaf0a043ff4ccb282d8f00f089

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "231296d81bad1a82ef7006bdf203a6011f9fd90abca7de323f131184b7bd2518",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-09-05T00:50:14Z",
    "title_canon_sha256": "68e8d12ccacd0435666b1955fc6ba9489396af394c10dccbe50923a4e21e7cbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01280",
    "kind": "arxiv",
    "version": 1
  }
}