Pith Number

pith:NPQ7TJKZ

pith:2024:NPQ7TJKZURSESIU36DWZDIWV6V

not attested not anchored not stored refs pending

Inference for Synthetic Controls via Refined Placebo Tests

Lihua Lei, Timothy Sudijono

arxiv:2401.07152 v3 · 2024-01-13 · stat.ME · econ.EM · math.ST · 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{NPQ7TJKZURSESIU36DWZDIWV6V}

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.

Cited by

1 paper in Pith

Bias-Aware Confidence Intervals for Synthetic Control via Placebo-in-Time Bootstrap

Receipt and verification

First computed	2026-07-05T10:51:03.407309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6be1f9a559a46449229bf0ed91a2d5f55bab0793596f843ab0f5cc259397ceb2

Aliases

arxiv: 2401.07152 · arxiv_version: 2401.07152v3 · doi: 10.48550/arxiv.2401.07152 · pith_short_12: NPQ7TJKZURSE · pith_short_16: NPQ7TJKZURSESIU3 · pith_short_8: NPQ7TJKZ

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/NPQ7TJKZURSESIU36DWZDIWV6V \
  | 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: 6be1f9a559a46449229bf0ed91a2d5f55bab0793596f843ab0f5cc259397ceb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e13d1ba808591509e1421ace609839e440c37e1db827350ad690bd7949d57873",
    "cross_cats_sorted": [
      "econ.EM",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2024-01-13T19:52:19Z",
    "title_canon_sha256": "5af326ab55e4c7c306383bac4a50e45b3d9bcbab75a1f6f675762ed67f220a55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.07152",
    "kind": "arxiv",
    "version": 3
  }
}