Pith Number

pith:SFMDDG63

pith:2013:SFMDDG63MIJFSX3GJIUENIRXAX

not attested not anchored not stored refs pending

Not all paths lead to Rome: Analysing the network of sister cities

Andreas Kaltenbrunner, David Laniado, Pablo Arag\'on, Yana Volkovich

arxiv:1301.6900 v1 · 2013-01-29 · 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{SFMDDG63MIJFSX3GJIUENIRXAX}

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	2026-05-18T03:32:31.123210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9158319bdb6212595f664a2846a23705df65f504aa78602c7c1bdc6cd09d1351

Aliases

arxiv: 1301.6900 · arxiv_version: 1301.6900v1 · doi: 10.48550/arxiv.1301.6900 · pith_short_12: SFMDDG63MIJF · pith_short_16: SFMDDG63MIJFSX3G · pith_short_8: SFMDDG63

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/SFMDDG63MIJFSX3GJIUENIRXAX \
  | 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: 9158319bdb6212595f664a2846a23705df65f504aa78602c7c1bdc6cd09d1351

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efb97cbf87968cfe22c90d4e929e36783b7c3fe8220f899df0a0d7b511306ab2",
    "cross_cats_sorted": [
      "cs.CY",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2013-01-29T12:01:21Z",
    "title_canon_sha256": "d7f86d1260feb1776f3a7089790f5c607197d95aab32bc2e9c95f3a77666b8d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6900",
    "kind": "arxiv",
    "version": 1
  }
}