Pith Number

pith:O7T4DCPN

pith:2018:O7T4DCPNLEKGRN6AQBSXAYL7AL

not attested not anchored not stored refs pending

City of the People, for the People: Sensing Urban Dynamics via Social Media Interactions

Noora Al-Emadi, Rachida Zegour, Sofiane Abbar, Tahar Zanouda

arxiv:1807.05734 v1 · 2018-07-16 · cs.SI · 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{O7T4DCPNLEKGRN6AQBSXAYL7AL}

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	2026-05-18T00:10:36.467854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77e7c189ed591468b7c0806570617f02e7a949b226c035aa0eb5a40e26acfdf0

Aliases

arxiv: 1807.05734 · arxiv_version: 1807.05734v1 · doi: 10.48550/arxiv.1807.05734 · pith_short_12: O7T4DCPNLEKG · pith_short_16: O7T4DCPNLEKGRN6A · pith_short_8: O7T4DCPN

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/O7T4DCPNLEKGRN6AQBSXAYL7AL \
  | 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: 77e7c189ed591468b7c0806570617f02e7a949b226c035aa0eb5a40e26acfdf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c8fd65aefcfee06ba9424d4ff94e19a81c320b40cb4babc7b737825299ec490",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2018-07-16T08:55:36Z",
    "title_canon_sha256": "8731a24cc0b3a75ae199d8201b8f18860df71244761ce5af19a01d114d4e2d72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05734",
    "kind": "arxiv",
    "version": 1
  }
}