Pith Number

pith:3ZAIRM3H

pith:2013:3ZAIRM3HDADNSHCKU4ZQFFMLTL

not attested not anchored not stored refs pending

The evolution of cooperation through institutional incentives and optional participation

Tatsuya Sasaki

arxiv:1302.6742 v1 · 2013-02-27 · physics.soc-ph · math.DS · nlin.AO · 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{3ZAIRM3HDADNSHCKU4ZQFFMLTL}

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	2026-05-18T03:15:43.398820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de4088b3671806d91c4aa73302958b9ac3271f1e7d5f5231c4334e9a958e4faa

Aliases

arxiv: 1302.6742 · arxiv_version: 1302.6742v1 · doi: 10.48550/arxiv.1302.6742 · pith_short_12: 3ZAIRM3HDADN · pith_short_16: 3ZAIRM3HDADNSHCK · pith_short_8: 3ZAIRM3H

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/3ZAIRM3HDADNSHCKU4ZQFFMLTL \
  | 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: de4088b3671806d91c4aa73302958b9ac3271f1e7d5f5231c4334e9a958e4faa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de3eb019d53816de6d3fd884c5ae0ddb291c59db18f3372a771e40de89e921f5",
    "cross_cats_sorted": [
      "math.DS",
      "nlin.AO",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2013-02-27T12:19:30Z",
    "title_canon_sha256": "bc24e1322a55f6847c3eb1d7becaf2cef0a6a53d71a21f1b76f98d7771d915f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6742",
    "kind": "arxiv",
    "version": 1
  }
}