Pith Number

pith:O2PCCSXY

pith:2011:O2PCCSXYGKMDYDTBNFQYVYBEG4

not attested not anchored not stored refs pending

Happiness is assortative in online social networks

Bruno Goncalves, Guangchen Ruan, Huina Mao, Johan Bollen

arxiv:1103.0784 v1 · 2011-03-03 · cs.SI · cs.CL · 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{O2PCCSXYGKMDYDTBNFQYVYBEG4}

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	2026-05-18T04:15:59.356185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

769e214af832983c0e6169618ae024372995a0e7d5c8d95a052f018b27be2a8b

Aliases

arxiv: 1103.0784 · arxiv_version: 1103.0784v1 · doi: 10.48550/arxiv.1103.0784 · pith_short_12: O2PCCSXYGKMD · pith_short_16: O2PCCSXYGKMDYDTB · pith_short_8: O2PCCSXY

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/O2PCCSXYGKMDYDTBNFQYVYBEG4 \
  | 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: 769e214af832983c0e6169618ae024372995a0e7d5c8d95a052f018b27be2a8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b7bfe957d0ee4af2954d604bffcd4a7134206607e9799f71c742ff3d5155bf3",
    "cross_cats_sorted": [
      "cs.CL",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2011-03-03T21:05:17Z",
    "title_canon_sha256": "e4555b65ed12f37463152d804b356d1a7c84e7ab8bb01b954253a9329cd07a30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0784",
    "kind": "arxiv",
    "version": 1
  }
}