Pith Number

pith:LSKJ5PFX

pith:2024:LSKJ5PFXWQAQEUKGBIDEINIM7G

not attested not anchored not stored refs pending

Difference-in-Differences when Parallel Trends Holds Conditional on Covariates

Brantly Callaway, Carolina Caetano

arxiv:2406.15288 v3 · 2024-06-21 · 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{LSKJ5PFXWQAQEUKGBIDEINIM7G}

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	2026-06-03T01:05:03.470451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c949ebcb7b4010251460a0644350cf98f9f27ce5464175c0a6553e6897ccfa4

Aliases

arxiv: 2406.15288 · arxiv_version: 2406.15288v3 · doi: 10.48550/arxiv.2406.15288 · pith_short_12: LSKJ5PFXWQAQ · pith_short_16: LSKJ5PFXWQAQEUKG · pith_short_8: LSKJ5PFX

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/LSKJ5PFXWQAQEUKGBIDEINIM7G \
  | 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: 5c949ebcb7b4010251460a0644350cf98f9f27ce5464175c0a6553e6897ccfa4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac57fd0f8a9f5b35b960fa6a837f8f31cd54e35c89a508a4c03596e889225767",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2024-06-21T16:32:32Z",
    "title_canon_sha256": "958a4cfa26b264d3dfc06da422c569d07515ad9a33f97a4ce6d787bebea44684"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2406.15288",
    "kind": "arxiv",
    "version": 3
  }
}