Pith Number

pith:JWHKNSJT

pith:2012:JWHKNSJTH25QLIXGP5Z6GYD2CX

not attested not anchored not stored refs pending

The Evolution of Extortion in Iterated Prisoner's Dilemma Games

Christian Hilbe, Karl Sigmund, Martin A. Nowak

arxiv:1212.1067 v1 · 2012-12-05 · q-bio.PE · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JWHKNSJTH25QLIXGP5Z6GYD2CX}

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	2026-05-18T01:52:47.397273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d8ea6c9333ebb05a2e67f73e3607a15d7fd3b9e4b8599a28398cdcb98510f64

Aliases

arxiv: 1212.1067 · arxiv_version: 1212.1067v1 · doi: 10.48550/arxiv.1212.1067 · pith_short_12: JWHKNSJTH25Q · pith_short_16: JWHKNSJTH25QLIXG · pith_short_8: JWHKNSJT

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/JWHKNSJTH25QLIXGP5Z6GYD2CX \
  | 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: 4d8ea6c9333ebb05a2e67f73e3607a15d7fd3b9e4b8599a28398cdcb98510f64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01dafe620b51faba097bfb56cc601a0c8fa14d917c3097c3304ffc32261afc48",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-12-05T15:56:04Z",
    "title_canon_sha256": "71b0735180e8d903a4afe25417e6f2af7215b5c18d963ec6f9ef27b6c280e6f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1067",
    "kind": "arxiv",
    "version": 1
  }
}