Pith Number

pith:AXICNSHB

pith:2026:AXICNSHBYXNE7DQVRMI4JCOHVS

not attested not anchored not stored refs pending

Menopause averted a midlife energetic crisis with help from older dependent children and parents: A simulation study

Edward H. Hagen

arxiv:2601.13442 v2 · 2026-01-19 · 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{AXICNSHBYXNE7DQVRMI4JCOHVS}

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	2026-07-07T02:18:33.025097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05d026c8e1c5da4f8e158b11c489c7acbea539a7d2f71ac1b5d452f68f08cc12

Aliases

arxiv: 2601.13442 · arxiv_version: 2601.13442v2 · doi: 10.48550/arxiv.2601.13442 · pith_short_12: AXICNSHBYXNE · pith_short_16: AXICNSHBYXNE7DQV · pith_short_8: AXICNSHB

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/AXICNSHBYXNE7DQVRMI4JCOHVS \
  | 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: 05d026c8e1c5da4f8e158b11c489c7acbea539a7d2f71ac1b5d452f68f08cc12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d049065c2d5c4fe1fde6dd14d711f9aaf29a20827a76a1be7a4f6e1ebd4f4d6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2026-01-19T23:00:13Z",
    "title_canon_sha256": "417c96b704872218a900e79e035447af7e521a17ca6043fe18a386ae821a1cc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.13442",
    "kind": "arxiv",
    "version": 2
  }
}