Pith Number

pith:K7OB6YUI

pith:2012:K7OB6YUIAXEOV2FHLXZUOMZ7HU

not attested not anchored not stored refs pending

Evolution of Cooperation on Spatially Embedded Networks

Marco Tomassini, Pierre Buesser

arxiv:1212.2788 v2 · 2012-12-12 · physics.soc-ph · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K7OB6YUIAXEOV2FHLXZUOMZ7HU}

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	2026-05-18T03:19:25.811943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57dc1f628805c8eae8a75df347333f3d2a610a8aeba47b0ebac40515e32a683c

Aliases

arxiv: 1212.2788 · arxiv_version: 1212.2788v2 · doi: 10.48550/arxiv.1212.2788 · pith_short_12: K7OB6YUIAXEO · pith_short_16: K7OB6YUIAXEOV2FH · pith_short_8: K7OB6YUI

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/K7OB6YUIAXEOV2FHLXZUOMZ7HU \
  | 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: 57dc1f628805c8eae8a75df347333f3d2a610a8aeba47b0ebac40515e32a683c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ef049af7bc858f1e00ef948604a0ed456ef07354b11513e4faa56d55044e40a",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-12-12T12:23:49Z",
    "title_canon_sha256": "3d023530a6b42b70bf322289e2c2191a075cd6bd15b18a696c15f4178688c70f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2788",
    "kind": "arxiv",
    "version": 2
  }
}