Pith Number

pith:Q2P43PXC

pith:2020:Q2P43PXCVUM3AAM7OB6U6CTQ3K

not attested not anchored not stored refs pending

Two-way Fixed Effects and Differences-in-Differences Estimators with Several Treatments

Cl\'ement de Chaisemartin, Xavier D'Haultf{\oe}uille

arxiv:2012.10077 v8 · 2020-12-18 · 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{Q2P43PXCVUM3AAM7OB6U6CTQ3K}

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	2026-07-05T06:01:32.888933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

869fcdbee2ad19b0019f707d4f0a70daa4df4572fcf0656ecc64806f3d97192f

Aliases

arxiv: 2012.10077 · arxiv_version: 2012.10077v8 · doi: 10.48550/arxiv.2012.10077 · pith_short_12: Q2P43PXCVUM3 · pith_short_16: Q2P43PXCVUM3AAM7 · pith_short_8: Q2P43PXC

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/Q2P43PXCVUM3AAM7OB6U6CTQ3K \
  | 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: 869fcdbee2ad19b0019f707d4f0a70daa4df4572fcf0656ecc64806f3d97192f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ea05ef88c598def18768b45bd4341135e14269ceb5b94e61f5920d0378255d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2020-12-18T07:11:36Z",
    "title_canon_sha256": "bb8150076f9fe08f49044d9c46ebce7ee35cc58e32ec80fe98aaf3f3d723dc32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.10077",
    "kind": "arxiv",
    "version": 8
  }
}