Pith Number

pith:KG6MUP72

pith:2011:KG6MUP72JOY6SQLJ4D4TXFBOKW

not attested not anchored not stored refs pending

Evolution of interactions and cooperation in the spatial prisoner's dilemma game

Chunyan Zhang, Guangming Xie, Jianlei Zhang, Long Wang, Matjaz Perc

arxiv:1112.6421 v1 · 2011-12-29 · physics.soc-ph · cond-mat.stat-mech · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KG6MUP72JOY6SQLJ4D4TXFBOKW}

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	2026-05-18T04:05:28.517152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51bcca3ffa4bb1e94169e0f93b942e55be2a2de6054eebb4f06b1ba364b753f6

Aliases

arxiv: 1112.6421 · arxiv_version: 1112.6421v1 · doi: 10.48550/arxiv.1112.6421 · pith_short_12: KG6MUP72JOY6 · pith_short_16: KG6MUP72JOY6SQLJ · pith_short_8: KG6MUP72

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/KG6MUP72JOY6SQLJ4D4TXFBOKW \
  | 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: 51bcca3ffa4bb1e94169e0f93b942e55be2a2de6054eebb4f06b1ba364b753f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d66c31a4445424f64a220f8b834aa3f29fdfc94ee038371d93227ccee8e9161",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-12-29T20:48:43Z",
    "title_canon_sha256": "9f778e5aba6de568bdc5badb09403b3a5b74cee9cc0c3a951d7be5e240d48d7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.6421",
    "kind": "arxiv",
    "version": 1
  }
}