Pith Number

pith:OL4SGZTN

pith:2015:OL4SGZTNFWAKWUC4BKNBONNOIH

not attested not anchored not stored refs pending

Sex differences in social focus across the lifecycle in humans

Asim Ghosh, Daniel Monsivais, Kimmo Kaski, Kunal Bhattacharya, Robin I. M. Dunbar

arxiv:1508.06878 v1 · 2015-08-27 · physics.soc-ph · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OL4SGZTNFWAKWUC4BKNBONNOIH}

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	2026-05-18T01:34:40.668381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72f923666d2d80ab505c0a9a1735ae41c2a849991111f01c04abb3a969048d73

Aliases

arxiv: 1508.06878 · arxiv_version: 1508.06878v1 · doi: 10.48550/arxiv.1508.06878 · pith_short_12: OL4SGZTNFWAK · pith_short_16: OL4SGZTNFWAKWUC4 · pith_short_8: OL4SGZTN

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/OL4SGZTNFWAKWUC4BKNBONNOIH \
  | 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: 72f923666d2d80ab505c0a9a1735ae41c2a849991111f01c04abb3a969048d73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df8e97bc91cc97dfebeb989054a9ba5b5b63b7a997b80402d60158085fcbd4a1",
    "cross_cats_sorted": [
      "cs.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2015-08-27T14:40:38Z",
    "title_canon_sha256": "ddc8362488ff2fb961c8a5a2cf9821b5ac40be92ad1544d4093d785914ecda17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06878",
    "kind": "arxiv",
    "version": 1
  }
}