Pith Number

pith:65EI33F4

pith:2009:65EI33F4XDXB6EM5UM47IC33N7

not attested not anchored not stored refs pending

An empirical study of spatial and transpatial social networks using Bluetooth and Facebook

Vassilis Kostakos

arxiv:0910.4292 v1 · 2009-10-22 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{65EI33F4XDXB6EM5UM47IC33N7}

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	2026-05-18T03:21:45.966743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7488decbcb8ee1f119da339f40b7b6ff1a8e5d1f0b249099c71d607298e7a18

Aliases

arxiv: 0910.4292 · arxiv_version: 0910.4292v1 · doi: 10.48550/arxiv.0910.4292 · pith_short_12: 65EI33F4XDXB · pith_short_16: 65EI33F4XDXB6EM5 · pith_short_8: 65EI33F4

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/65EI33F4XDXB6EM5UM47IC33N7 \
  | 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: f7488decbcb8ee1f119da339f40b7b6ff1a8e5d1f0b249099c71d607298e7a18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdbc59314ad05f6ec728f2f2a85bb77b0f7c2f55dc062018ebe0baa38b1ac472",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2009-10-22T11:09:02Z",
    "title_canon_sha256": "2cb330838e8dee0ed77037a20f5f164f171d6adf9c27a14bcb201389419760ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4292",
    "kind": "arxiv",
    "version": 1
  }
}