Pith Number

pith:2Q3FQFBE

pith:2019:2Q3FQFBEWXZL3JXGG3Z7VYX6PE

not attested not anchored not stored refs pending

Evolution of cooperation in networks with well-connected cooperators

Jonatan Bohr Brask, Josefine Bohr Brask

arxiv:1908.05923 v4 · 2019-08-16 · q-bio.PE · 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{2Q3FQFBEWXZL3JXGG3Z7VYX6PE}

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	2026-07-05T09:37:26.794627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d436581424b5f2bda6e636f3fae2fe79295c2dfa9b5c23aa2beeade28bb86ef1

Aliases

arxiv: 1908.05923 · arxiv_version: 1908.05923v4 · doi: 10.48550/arxiv.1908.05923 · pith_short_12: 2Q3FQFBEWXZL · pith_short_16: 2Q3FQFBEWXZL3JXG · pith_short_8: 2Q3FQFBE

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/2Q3FQFBEWXZL3JXGG3Z7VYX6PE \
  | 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: d436581424b5f2bda6e636f3fae2fe79295c2dfa9b5c23aa2beeade28bb86ef1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a96a00db0199d13899f03d23bd6bb1f6058b544392d0c67b871bf87303d8828c",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2019-08-16T10:33:14Z",
    "title_canon_sha256": "0373f2932b16c576c97c820c0c20e0ee410c55a5a3cf1a6a438286a0aef4724d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05923",
    "kind": "arxiv",
    "version": 4
  }
}