Pith Number

pith:G2BKE6UT

pith:2019:G2BKE6UTEGJH72FEM7QQZWF7RJ

not attested not anchored not stored refs pending

From Local to Global: External Validity in a Fertility Natural Experiment

Cristian Pop-Eleches, Cyrus Samii, Rajeev Dehejia

arxiv:1906.08096 v1 · 2019-06-19 · econ.EM · stat.AP · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G2BKE6UTEGJH72FEM7QQZWF7RJ}

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	2026-05-17T23:42:54.606499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3682a27a9321927fe8a467e10cd8bf8a46396ee086fd42b27a2e5064045acba4

Aliases

arxiv: 1906.08096 · arxiv_version: 1906.08096v1 · doi: 10.48550/arxiv.1906.08096 · pith_short_12: G2BKE6UTEGJH · pith_short_16: G2BKE6UTEGJH72FE · pith_short_8: G2BKE6UT

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/G2BKE6UTEGJH72FEM7QQZWF7RJ \
  | 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: 3682a27a9321927fe8a467e10cd8bf8a46396ee086fd42b27a2e5064045acba4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6552a2ed81ef30822afe45990fc784d5668a6e97d70d6a5e916d2f7974e03623",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2019-06-19T13:43:37Z",
    "title_canon_sha256": "272af687c734bf9750ee622835abd4b9f54335fdaf6a229ea6d01f94e27a9119"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08096",
    "kind": "arxiv",
    "version": 1
  }
}