Pith Number

pith:W7MWYQHO

pith:2015:W7MWYQHOLZTYWQGPB2W2VMJYHC

not attested not anchored not stored refs pending

Evolution of public cooperation in a monitored society with implicated punishment and within-group enforcement

Matjaz Perc, Tatsuya Sasaki, Xiaojie Chen

arxiv:1511.06353 v1 · 2015-11-19 · q-bio.PE · cs.GT · 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{W7MWYQHOLZTYWQGPB2W2VMJYHC}

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	2026-05-18T01:26:25.879840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7d96c40ee5e678b40cf0eadaab13838921f95c0dfc42bfbc9856a6ede1646c2

Aliases

arxiv: 1511.06353 · arxiv_version: 1511.06353v1 · doi: 10.48550/arxiv.1511.06353 · pith_short_12: W7MWYQHOLZTY · pith_short_16: W7MWYQHOLZTYWQGP · pith_short_8: W7MWYQHO

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/W7MWYQHOLZTYWQGPB2W2VMJYHC \
  | 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: b7d96c40ee5e678b40cf0eadaab13838921f95c0dfc42bfbc9856a6ede1646c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec9a3bf1cf8acbac1154f8903dbc1ab9725852c147eae6de66b86fa5e0ea0671",
    "cross_cats_sorted": [
      "cs.GT",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-11-19T20:46:29Z",
    "title_canon_sha256": "646e71d7544fdcd31d40ff76f5de2f3549632dc5dbdda75a2c8541e48e7c06b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.06353",
    "kind": "arxiv",
    "version": 1
  }
}