Pith Number

pith:LTU57SFO

pith:2017:LTU57SFO7I3TIWOMXIVFZBGAFH

not attested not anchored not stored refs pending

Congestion Barcodes: Exploring the Topology of Urban Congestion Using Persistent Homology

Arnab Chakraborty, Daniel B. Work, Derrek Yager, Gabriel Shindnes, Richard B. Sowers, Vaibhav Karve, Yu Wu

arxiv:1707.08557 v1 · 2017-07-20 · physics.soc-ph · cs.DS · math.AT · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LTU57SFO7I3TIWOMXIVFZBGAFH}

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	2026-05-18T00:39:23.933251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ce9dfc8aefa373459ccba2a5c84c029d89051479e1adf5c53d3ae5e8f21b605

Aliases

arxiv: 1707.08557 · arxiv_version: 1707.08557v1 · doi: 10.48550/arxiv.1707.08557 · pith_short_12: LTU57SFO7I3T · pith_short_16: LTU57SFO7I3TIWOM · pith_short_8: LTU57SFO

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/LTU57SFO7I3TIWOMXIVFZBGAFH \
  | 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: 5ce9dfc8aefa373459ccba2a5c84c029d89051479e1adf5c53d3ae5e8f21b605

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09e5ebd1a002576430e1521de807247e27fa2aa3bafd3fb3c570177380cfdd33",
    "cross_cats_sorted": [
      "cs.DS",
      "math.AT",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2017-07-20T00:12:43Z",
    "title_canon_sha256": "e5131837411c8fcef7f789e472620b49094afb56876bbbf5ea604e2ffb1718bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08557",
    "kind": "arxiv",
    "version": 1
  }
}