Pith Number

pith:4NATVUIT

pith:2009:4NATVUITH7FZS6DWAI4QGXINV4

not attested not anchored not stored refs pending

Cooperative Behavior Cascades in Human Social Networks

James H. Fowler, Nicholas A. Christakis

arxiv:0908.3497 v2 · 2009-08-24 · physics.soc-ph · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4NATVUITH7FZS6DWAI4QGXINV4}

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	2026-05-18T04:17:03.494703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3413ad1133fcb9978760239035d0daf0821b56123c1f8048df3e7b280cd055a

Aliases

arxiv: 0908.3497 · arxiv_version: 0908.3497v2 · doi: 10.48550/arxiv.0908.3497 · pith_short_12: 4NATVUITH7FZ · pith_short_16: 4NATVUITH7FZS6DW · pith_short_8: 4NATVUIT

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/4NATVUITH7FZS6DWAI4QGXINV4 \
  | 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: e3413ad1133fcb9978760239035d0daf0821b56123c1f8048df3e7b280cd055a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce228c66916194ca0b1c76e7504b01d488837a3d8eb88717807c32da18538c7b",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2009-08-24T21:07:13Z",
    "title_canon_sha256": "d7b5d2a9d8708a9c127095d482499e0ff3a92c9023d909cde48fa8b914555442"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3497",
    "kind": "arxiv",
    "version": 2
  }
}