Pith Number

pith:WVFQMEFO

pith:2018:WVFQMEFOCIRA5ZBBTSAVGJBWQF

not attested not anchored not stored refs pending

Two-Step Estimation and Inference with Possibly Many Included Covariates

Matias D. Cattaneo, Michael Jansson, Xinwei Ma

arxiv:1807.10100 v1 · 2018-07-26 · econ.EM · math.ST · stat.ME · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WVFQMEFOCIRA5ZBBTSAVGJBWQF}

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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.

Cited by

1 paper in Pith

Post-Screening Portfolio Selection

Receipt and verification

First computed	2026-05-18T00:09:45.414607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b54b0610ae12220ee4219c81532436817b58817f62b49797f76eeb2ec89ed9ff

Aliases

arxiv: 1807.10100 · arxiv_version: 1807.10100v1 · doi: 10.48550/arxiv.1807.10100 · pith_short_12: WVFQMEFOCIRA · pith_short_16: WVFQMEFOCIRA5ZBB · pith_short_8: WVFQMEFO

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/WVFQMEFOCIRA5ZBBTSAVGJBWQF \
  | 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: b54b0610ae12220ee4219c81532436817b58817f62b49797f76eeb2ec89ed9ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ea4bde3f330a563a4d99716a355c52c3b15625c16064282e7afe5df99a644c8",
    "cross_cats_sorted": [
      "math.ST",
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2018-07-26T12:53:58Z",
    "title_canon_sha256": "be9cf977c0aaebcd69ba620a8b7e0af3e57dd89c0747a438a3920f015bf381f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10100",
    "kind": "arxiv",
    "version": 1
  }
}