Pith Number

pith:MA2WRZCK

pith:2019:MA2WRZCKVZZE4JBRA5YZA37CC7

not attested not anchored not stored refs pending

Evolution of longevity, age at last birth and sexual conflict with grandmothering

Kristen Hawkes, Matthew H. Chan, Peter S. Kim

arxiv:1906.12047 v1 · 2019-06-28 · q-bio.PE · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MA2WRZCKVZZE4JBRA5YZA37CC7}

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	2026-05-17T23:41:59.428609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

603568e44aae724e24310771906fe217c731ee9a6f13c36214d8b6c2c8c10478

Aliases

arxiv: 1906.12047 · arxiv_version: 1906.12047v1 · doi: 10.48550/arxiv.1906.12047 · pith_short_12: MA2WRZCKVZZE · pith_short_16: MA2WRZCKVZZE4JBR · pith_short_8: MA2WRZCK

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/MA2WRZCKVZZE4JBRA5YZA37CC7 \
  | 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: 603568e44aae724e24310771906fe217c731ee9a6f13c36214d8b6c2c8c10478

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d786bbf7441ae3954f642e9902879cda5651285e1553cc10821aecc1b149d576",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2019-06-28T05:31:02Z",
    "title_canon_sha256": "9e61d0d016231fc65ed203504b5af4db27ca5d80e964bd9035d264529f92d59f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12047",
    "kind": "arxiv",
    "version": 1
  }
}