Pith Number

pith:ESB4H5MJ

pith:2026:ESB4H5MJK2V33ZW5UXCJNKJJQA

not attested not anchored not stored refs pending

Anticipating Continued Global Fertility Decline via Neural Forecasting

Daniel Ciganda, Facundo Morini, Francisco Piriz, Henrik-Alexander Schubert, Mikko Myrskyl\"a, Ugofilippo Basellini

arxiv:2605.23858 v1 · 2026-05-22 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ESB4H5MJK2V33ZW5UXCJNKJJQA}

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	2026-05-25T02:02:36.284664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2483c3f58956abbde6dda5c496a92980159f238f5719e755b32f8f1c34a52e61

Aliases

arxiv: 2605.23858 · arxiv_version: 2605.23858v1 · doi: 10.48550/arxiv.2605.23858 · pith_short_12: ESB4H5MJK2V3 · pith_short_16: ESB4H5MJK2V33ZW5 · pith_short_8: ESB4H5MJ

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/ESB4H5MJK2V33ZW5UXCJNKJJQA \
  | 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: 2483c3f58956abbde6dda5c496a92980159f238f5719e755b32f8f1c34a52e61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf6cf18fcb0fe6f73f43166fb326a91aeafaef96154d538ed8dc030b7f0f14ef",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2026-05-22T17:17:48Z",
    "title_canon_sha256": "fc4862fc4403d344eb7ce96c23f00caceb559af12488d71959c3904688960ece"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23858",
    "kind": "arxiv",
    "version": 1
  }
}