Pith Number

pith:A5CGMBA7

pith:2018:A5CGMBA7KFTH4XZOB5FIHHZNBU

not attested not anchored not stored refs pending

How can population pyramids be used to explore the past?

Bertrand M. Roehner

arxiv:1803.07776 v1 · 2018-03-21 · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A5CGMBA7KFTH4XZOB5FIHHZNBU}

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	2026-05-18T00:20:28.997599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

074466041f51667e5f2e0f4a839f2d0d353f698515a325b8dc6cb77e576b12d3

Aliases

arxiv: 1803.07776 · arxiv_version: 1803.07776v1 · doi: 10.48550/arxiv.1803.07776 · pith_short_12: A5CGMBA7KFTH · pith_short_16: A5CGMBA7KFTH4XZO · pith_short_8: A5CGMBA7

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/A5CGMBA7KFTH4XZOB5FIHHZNBU \
  | 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: 074466041f51667e5f2e0f4a839f2d0d353f698515a325b8dc6cb77e576b12d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74e6e6e3ccc715f130aa41ac36de4eb8b26283518ba8a4bd1a098cb48b47572f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2018-03-21T07:31:06Z",
    "title_canon_sha256": "1d3a80532c070962efc0cd867bc58403e3a07db8324444c651f99c158ae7c268"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07776",
    "kind": "arxiv",
    "version": 1
  }
}