Pith Number

pith:5QLR66YU

pith:2015:5QLR66YUP4RE6J2UXWQ6X6APOX

not attested not anchored not stored refs pending

Extortion outperforms generosity in iterated Prisoners' Dilemma

Bin Xu, Jaimie W. Lien, Jie Zheng, Yanran Zhou, Zhijian Wang

arxiv:1505.02378 v1 · 2015-05-10 · 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{5QLR66YUP4RE6J2UXWQ6X6APOX}

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	2026-05-18T02:16:18.953924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec171f7b147f224f2754bda1ebf80f75c6e5daf20991e2ba9281b8fbf6adc00c

Aliases

arxiv: 1505.02378 · arxiv_version: 1505.02378v1 · doi: 10.48550/arxiv.1505.02378 · pith_short_12: 5QLR66YUP4RE · pith_short_16: 5QLR66YUP4RE6J2U · pith_short_8: 5QLR66YU

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/5QLR66YUP4RE6J2UXWQ6X6APOX \
  | 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: ec171f7b147f224f2754bda1ebf80f75c6e5daf20991e2ba9281b8fbf6adc00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33a767961d2e51857c19246b1651ae86e6e6cec582a530a1374a85cfee99a00d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2015-05-10T13:39:25Z",
    "title_canon_sha256": "58cd0cdc0f8b81192f6ab9710827597c221f3efb7655e613a7f2550eaf9d3320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.02378",
    "kind": "arxiv",
    "version": 1
  }
}