Pith Number

pith:UKT2S3OK

pith:2025:UKT2S3OKNGRKJCKO3AUXFTGG76

not attested not anchored not stored refs pending

Accounting for spillover when using the augmented synthetic control method: estimating the effect of localized COVID-19 lockdowns in Chile

Michael Hudgens, Taylor Krajewski

arxiv:2504.16244 v1 · 2025-04-22 · 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{UKT2S3OKNGRKJCKO3AUXFTGG76}

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	2026-07-05T10:52:43.676254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2a7a96dca69a2a4894ed82972ccc6ff89acbbad8c3dd3d10544d41047fa550b

Aliases

arxiv: 2504.16244 · arxiv_version: 2504.16244v1 · doi: 10.48550/arxiv.2504.16244 · pith_short_12: UKT2S3OKNGRK · pith_short_16: UKT2S3OKNGRKJCKO · pith_short_8: UKT2S3OK

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/UKT2S3OKNGRKJCKO3AUXFTGG76 \
  | 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: a2a7a96dca69a2a4894ed82972ccc6ff89acbbad8c3dd3d10544d41047fa550b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "949d3bfc7b0213c6840949255ff9d46c0362bc8b314b538874497239dda76178",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2025-04-22T20:18:18Z",
    "title_canon_sha256": "54d7e17df43afcfae13a654192ee88fa0930a324b183daeeffe71b6da1699958"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.16244",
    "kind": "arxiv",
    "version": 1
  }
}