Pith Number

pith:IZOUHDF7

pith:2026:IZOUHDF7WGNO6XY3Y5ZWTFXSAR

not attested not anchored not stored refs pending

Group-Level Treatment Effect Heterogeneity in Difference-in-Differences: A Balanced Approach

Nadja van 't Hoff, Nora Bearth, Torben S. D. Johansen

arxiv:2606.24785 v1 · 2026-06-23 · 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{IZOUHDF7WGNO6XY3Y5ZWTFXSAR}

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	2026-06-24T01:15:42.258951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

465d438cbfb19aef5f1bc7736996f20478b5db1e53ab8860e53acf040d6900b6

Aliases

arxiv: 2606.24785 · arxiv_version: 2606.24785v1 · doi: 10.48550/arxiv.2606.24785 · pith_short_12: IZOUHDF7WGNO · pith_short_16: IZOUHDF7WGNO6XY3 · pith_short_8: IZOUHDF7

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/IZOUHDF7WGNO6XY3Y5ZWTFXSAR \
  | 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: 465d438cbfb19aef5f1bc7736996f20478b5db1e53ab8860e53acf040d6900b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "204f5c18c064829348bb105474a3e1c72ae2d694e002fbbe7780c1759b17c273",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2026-06-23T16:44:50Z",
    "title_canon_sha256": "6131be793b4cb090a1a5c19a768007086511f55dcdd3abf7c58e3556483d9723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.24785",
    "kind": "arxiv",
    "version": 1
  }
}