Pith Number

pith:F5A6FW5O

pith:2009:F5A6FW5OC5IQ3AOKYINZCHVIH6

not attested not anchored not stored refs pending

A Walk in Facebook: Uniform Sampling of Users in Online Social Networks

Athina Markopoulou, Carter T. Butts, Maciej Kurant, Minas Gjoka

arxiv:0906.0060 v5 · 2009-05-30 · cs.SI · cs.NI · physics.data-an · physics.soc-ph · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F5A6FW5OC5IQ3AOKYINZCHVIH6}

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	2026-05-18T02:24:55.593942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f41e2dbae17510d81cac21b911ea83fb12f283f327a0155b685569aad591ef4

Aliases

arxiv: 0906.0060 · arxiv_version: 0906.0060v5 · doi: 10.48550/arxiv.0906.0060 · pith_short_12: F5A6FW5OC5IQ · pith_short_16: F5A6FW5OC5IQ3AOK · pith_short_8: F5A6FW5O

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/F5A6FW5OC5IQ3AOKYINZCHVIH6 \
  | 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: 2f41e2dbae17510d81cac21b911ea83fb12f283f327a0155b685569aad591ef4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db4a1677e2bb7ecc8abb0241b4d553d69b93220654bc01617f060534273c86ce",
    "cross_cats_sorted": [
      "cs.NI",
      "physics.data-an",
      "physics.soc-ph",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2009-05-30T05:26:36Z",
    "title_canon_sha256": "4d5b5fcfe7a3d002dbbd9387c0090633a682a3fce1cc13566019aebfb623b411"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0060",
    "kind": "arxiv",
    "version": 5
  }
}