Pith Number

pith:MA4XPKL3

pith:2016:MA4XPKL3XNFRKTJS5RCOJRM65P

not attested not anchored not stored refs pending

Optimal Data Collection for Randomized Control Trials

Daniel Wilhelm, Pedro Carneiro, Sokbae Lee

arxiv:1603.03675 v4 · 2016-03-11 · stat.ME · econ.EM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MA4XPKL3XNFRKTJS5RCOJRM65P}

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	2026-05-18T00:34:23.214384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

603977a97bbb4b154d32ec44e4c59eebd0fda5fd6589d0829b6b37566126184f

Aliases

arxiv: 1603.03675 · arxiv_version: 1603.03675v4 · doi: 10.48550/arxiv.1603.03675 · pith_short_12: MA4XPKL3XNFR · pith_short_16: MA4XPKL3XNFRKTJS · pith_short_8: MA4XPKL3

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/MA4XPKL3XNFRKTJS5RCOJRM65P \
  | 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: 603977a97bbb4b154d32ec44e4c59eebd0fda5fd6589d0829b6b37566126184f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "664cb415d03c533ae51ae8c926053c38385aefa72c373c6d7b6df73b7aa2a1ee",
    "cross_cats_sorted": [
      "econ.EM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2016-03-11T16:06:03Z",
    "title_canon_sha256": "42c03a6f90de597a384e0e7a9555278496dfb8fa27d693f3574850e1390f04ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.03675",
    "kind": "arxiv",
    "version": 4
  }
}