Pith Number

pith:2VWCD5ST

pith:2012:2VWCD5STVKUIAT6SKWVJ2DWPM2

not attested not anchored not stored refs pending

Altruism can proliferate through group/kin selection despite high random gene flow

Nestor Caticha, Renato Vicente, Roberto H. Schonmann

arxiv:1208.0863 v2 · 2012-08-03 · 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{2VWCD5STVKUIAT6SKWVJ2DWPM2}

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	2026-05-18T03:11:58.068897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d56c21f653aaa8804fd255aa9d0ecf668354f8921b1031ede0c9a5abfb7fc96c

Aliases

arxiv: 1208.0863 · arxiv_version: 1208.0863v2 · doi: 10.48550/arxiv.1208.0863 · pith_short_12: 2VWCD5STVKUI · pith_short_16: 2VWCD5STVKUIAT6S · pith_short_8: 2VWCD5ST

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/2VWCD5STVKUIAT6SKWVJ2DWPM2 \
  | 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: d56c21f653aaa8804fd255aa9d0ecf668354f8921b1031ede0c9a5abfb7fc96c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5dc1c05afe3b032fb1fbde790f232789a90f92251da779e8ce4804e40280a9e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-08-03T22:38:26Z",
    "title_canon_sha256": "03d094465deaa9ec65ef5b26edb28a319abc0f205562112819646eea34209350"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0863",
    "kind": "arxiv",
    "version": 2
  }
}