Pith Number

pith:UHESOJBQ

pith:2015:UHESOJBQES5ANQRU5MBNGXI4XN

not attested not anchored not stored refs pending

Urban Magnetism Through The Lens of Geo-tagged Photography

Carlo Ratti, Iva Bojic, Marta C. Gonzalez, Silvia Paldino, Stanislav Sobolevsky

arxiv:1503.05502 v3 · 2015-03-18 · 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{UHESOJBQES5ANQRU5MBNGXI4XN}

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	2026-05-18T01:59:57.608248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1c927243024ba06c234eb02d35d1cbb64d4c49cef92caa8085ffc0416a8064e

Aliases

arxiv: 1503.05502 · arxiv_version: 1503.05502v3 · doi: 10.48550/arxiv.1503.05502 · pith_short_12: UHESOJBQES5A · pith_short_16: UHESOJBQES5ANQRU · pith_short_8: UHESOJBQ

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/UHESOJBQES5ANQRU5MBNGXI4XN \
  | 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: a1c927243024ba06c234eb02d35d1cbb64d4c49cef92caa8085ffc0416a8064e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9f71c166974f699a4fcb1973123ed8546e3ed26f69b34144e109d5c6c9c62b1",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-03-18T17:30:21Z",
    "title_canon_sha256": "1dd8340ebd2a236f639bac4b7557e0cebf1038bb5d05a12e324757497d5ebe9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.05502",
    "kind": "arxiv",
    "version": 3
  }
}