Pith Number

pith:KADTD33P

pith:2012:KADTD33P5SHS2YHFGABGSPAKHX

not attested not anchored not stored refs pending

The concurrent evolution of cooperation and the population structures that support it

Alexandra S. Penn, Richard A. Watson, Simon T. Powers

arxiv:1208.0482 v1 · 2012-08-02 · q-bio.PE · cs.SI · 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{KADTD33P5SHS2YHFGABGSPAKHX}

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	2026-05-18T03:49:34.094607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

500731ef6fec8f2d60e53002693c0a3dc5594d4af36e5ed7f6763dbed7df6e53

Aliases

arxiv: 1208.0482 · arxiv_version: 1208.0482v1 · doi: 10.48550/arxiv.1208.0482 · pith_short_12: KADTD33P5SHS · pith_short_16: KADTD33P5SHS2YHF · pith_short_8: KADTD33P

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/KADTD33P5SHS2YHFGABGSPAKHX \
  | 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: 500731ef6fec8f2d60e53002693c0a3dc5594d4af36e5ed7f6763dbed7df6e53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a16823c44365a04a781f15421020dba579b4c37449cc84b38678e75cb88ef5bb",
    "cross_cats_sorted": [
      "cs.SI",
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-08-02T13:50:57Z",
    "title_canon_sha256": "fd29f89833d204ffdbaf29d42815a3fac05709657292c5c76896bdd01a2e259d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0482",
    "kind": "arxiv",
    "version": 1
  }
}