Pith Number

pith:AAAQQCZZ

pith:2013:AAAQQCZZUJQ674UAKMZ55ODS7L

not attested not anchored not stored refs pending

Geo-located Twitter as the proxy for global mobility patterns

Bartosz Hawelka, Carlo Ratti, Euro Beinat, Izabela Sitko, Pavlos Kazakopoulos, Stanislav Sobolevsky

arxiv:1311.0680 v2 · 2013-11-04 · 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{AAAQQCZZUJQ674UAKMZ55ODS7L}

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	2026-05-18T02:57:35.490102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0

Aliases

arxiv: 1311.0680 · arxiv_version: 1311.0680v2 · doi: 10.48550/arxiv.1311.0680 · pith_short_12: AAAQQCZZUJQ6 · pith_short_16: AAAQQCZZUJQ674UA · pith_short_8: AAAQQCZZ

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/AAAQQCZZUJQ674UAKMZ55ODS7L \
  | 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: 0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fddd4ee3d22f3a5c4b641c4aded55de29198547588a0f3c7873d12544703608",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2013-11-04T12:46:08Z",
    "title_canon_sha256": "cac83c7dbe41d33da33eca49d37031b67a02aed9a391e28d756a91ccd959790d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0680",
    "kind": "arxiv",
    "version": 2
  }
}