Pith Number

pith:LJE5UBRR

pith:2018:LJE5UBRRHUFGFDMP3DQEOHXVN6

not attested not anchored not stored refs pending

The Extended Evolutionary Synthesis Facilitates Evolutionary Models of Culture Change

Cameron M. Smith, Liane Gabora, William Gardner-O'Kearney

arxiv:1812.00143 v4 · 2018-12-01 · 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{LJE5UBRRHUFGFDMP3DQEOHXVN6}

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	2026-05-17T23:40:34.003803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a49da06313d0a628d8fd8e0471ef56fa51c09a2df1698d29306415ad9fe906e

Aliases

arxiv: 1812.00143 · arxiv_version: 1812.00143v4 · doi: 10.48550/arxiv.1812.00143 · pith_short_12: LJE5UBRRHUFG · pith_short_16: LJE5UBRRHUFGFDMP · pith_short_8: LJE5UBRR

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/LJE5UBRRHUFGFDMP3DQEOHXVN6 \
  | 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: 5a49da06313d0a628d8fd8e0471ef56fa51c09a2df1698d29306415ad9fe906e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bf6306e62754f334ce2e5a612091fb6f94527bea24c406a571d7df85970f926",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2018-12-01T04:44:27Z",
    "title_canon_sha256": "44cab9af87a916037fe373f94f55fbefd328f286abb1d8ae923995ed49f3137c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00143",
    "kind": "arxiv",
    "version": 4
  }
}