Pith Number

pith:65RHRGR7

pith:2012:65RHRGR7FY4QJMCUGRVQZLRN3D

not attested not anchored not stored refs pending

The efficacy of group selection is increased by coexistence dynamics within groups

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

arxiv:1208.0518 v1 · 2012-08-02 · 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{65RHRGR7FY4QJMCUGRVQZLRN3D}

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	2026-05-18T03:49:33.958281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f762789a3f2e3904b054346b0cae2dd8c77b5a9553ccf202f1dec44e91204ef0

Aliases

arxiv: 1208.0518 · arxiv_version: 1208.0518v1 · doi: 10.48550/arxiv.1208.0518 · pith_short_12: 65RHRGR7FY4Q · pith_short_16: 65RHRGR7FY4QJMCU · pith_short_8: 65RHRGR7

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/65RHRGR7FY4QJMCUGRVQZLRN3D \
  | 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: f762789a3f2e3904b054346b0cae2dd8c77b5a9553ccf202f1dec44e91204ef0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12be7105bec84d64b5208d8ae418a9018abac7dc6862e579eaa2171c85fcd87c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-08-02T15:36:12Z",
    "title_canon_sha256": "cedac09f0602af35f010e727ae3198c7bae33d093dee29948d1bad70aa2bc9f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0518",
    "kind": "arxiv",
    "version": 1
  }
}