Pith Number

pith:QMDUSEDZ

pith:2015:QMDUSEDZQLWBRE6SGOKYISJJZT

not attested not anchored not stored refs pending

Explore Spatiotemporal and Demographic Characteristics of Human Mobility via Twitter: A Case Study of Chicago

Feixiong Luo, Guofeng Cao, Kevin Mulligan, Xiang Li

arxiv:1508.00188 v2 · 2015-08-02 · 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{QMDUSEDZQLWBRE6SGOKYISJJZT}

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	2026-05-18T01:17:11.626077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

830749107982ec1893d23395844929ccf30d736ce5ff17309f211b1eca287218

Aliases

arxiv: 1508.00188 · arxiv_version: 1508.00188v2 · doi: 10.48550/arxiv.1508.00188 · pith_short_12: QMDUSEDZQLWB · pith_short_16: QMDUSEDZQLWBRE6S · pith_short_8: QMDUSEDZ

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/QMDUSEDZQLWBRE6SGOKYISJJZT \
  | 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: 830749107982ec1893d23395844929ccf30d736ce5ff17309f211b1eca287218

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "284ac0342c9221aaaddccab5494f63420eb90f0758739b3ef66c7c0a2aa0f79f",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-08-02T04:16:44Z",
    "title_canon_sha256": "d7c390332fb84b7ed74002598bce2d0c4d84a36e65e7d3cf58f1720dcc95a3aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.00188",
    "kind": "arxiv",
    "version": 2
  }
}