Pith Number

pith:FKOCZ6GW

pith:2026:FKOCZ6GW2TG247RZVGTTL56X6Y

not attested not anchored not stored refs pending

A Fixed-Effects Causal Forest for Staggered Adoption, with an Application to Medicaid Expansion

Harry Aytug

arxiv:2607.19644 v1 · 2026-07-22 · 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{FKOCZ6GW2TG247RZVGTTL56X6Y}

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	2026-07-23T00:24:01.530283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a9c2cf8d6d4cdae7e39a9a735f7d7f62f2a1f8e093f997266cfad2b00b51957

Aliases

arxiv: 2607.19644 · arxiv_version: 2607.19644v1 · doi: 10.48550/arxiv.2607.19644 · pith_short_12: FKOCZ6GW2TG2 · pith_short_16: FKOCZ6GW2TG247RZ · pith_short_8: FKOCZ6GW

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/FKOCZ6GW2TG247RZVGTTL56X6Y \
  | 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: 2a9c2cf8d6d4cdae7e39a9a735f7d7f62f2a1f8e093f997266cfad2b00b51957

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4e4f333ca3bef195916d3e9684a7a53899c69dd46fa4a792899293d4d5079b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2026-07-22T00:53:27Z",
    "title_canon_sha256": "f6dfa60610b6e1389c561b40fb3c48ebd39acd4485036e9e86987fc3542daf5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.19644",
    "kind": "arxiv",
    "version": 1
  }
}