Pith Number

pith:YNKFWPW4

pith:2012:YNKFWPW4M7LZSTQIYATXVHWQH3

not attested not anchored not stored refs pending

The evolutionary origins of modularity

Hod Lipson, Jean-Baptiste Mouret, Jeff Clune

arxiv:1207.2743 v2 · 2012-07-11 · q-bio.PE · cs.NE · q-bio.MN · q-bio.NC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YNKFWPW4M7LZSTQIYATXVHWQH3}

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	2026-05-18T02:25:10.667374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3545b3edc67d7994e08c0277a9ed03ed552887659b18d0cda9c2ed166ea34de

Aliases

arxiv: 1207.2743 · arxiv_version: 1207.2743v2 · doi: 10.48550/arxiv.1207.2743 · pith_short_12: YNKFWPW4M7LZ · pith_short_16: YNKFWPW4M7LZSTQI · pith_short_8: YNKFWPW4

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/YNKFWPW4M7LZSTQIYATXVHWQH3 \
  | 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: c3545b3edc67d7994e08c0277a9ed03ed552887659b18d0cda9c2ed166ea34de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e72c761ba1ce233047986f125357c71cb367428351978722057545e0a202c3dc",
    "cross_cats_sorted": [
      "cs.NE",
      "q-bio.MN",
      "q-bio.NC"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-07-11T18:45:51Z",
    "title_canon_sha256": "bcb252dc31c18d49b1c7894e6d0c017ae7e37bea86d97198cba1ff0cc8f0e4ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2743",
    "kind": "arxiv",
    "version": 2
  }
}