Pith Number

pith:WQOYRGMH

pith:2011:WQOYRGMHMZNRBSWJHT5H7DZJ32

not attested not anchored not stored refs pending

The Joker effect: cooperation driven by destructive agents

Alex Arenas, Jos\'e A. Cuesta, Juan Camacho, Rub\'en Requejo

arxiv:1103.3257 v1 · 2011-03-16 · physics.soc-ph · physics.bio-ph · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQOYRGMHMZNRBSWJHT5H7DZJ32}

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	2026-05-18T03:42:21.612001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b41d889987665b10cac93cfa7f8f29de82a4dda76bbd990d8ea7e3508c58ee00

Aliases

arxiv: 1103.3257 · arxiv_version: 1103.3257v1 · doi: 10.48550/arxiv.1103.3257 · pith_short_12: WQOYRGMHMZNR · pith_short_16: WQOYRGMHMZNRBSWJ · pith_short_8: WQOYRGMH

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/WQOYRGMHMZNRBSWJHT5H7DZJ32 \
  | 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: b41d889987665b10cac93cfa7f8f29de82a4dda76bbd990d8ea7e3508c58ee00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4e5da4898d1f769e1df4bf28d8ba29a1893b94a2a64cbf65c7e004b5cbe8b10",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2011-03-16T19:03:27Z",
    "title_canon_sha256": "8358eff55dd4fc457f2a02b4a4802d22295da2441e7ebfc0b33693f33870af4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3257",
    "kind": "arxiv",
    "version": 1
  }
}