Pith Number

pith:7ZMFJUKO

pith:2019:7ZMFJUKOYIRLJZWSA273LCMMCG

not attested not anchored not stored refs pending

A bracketing relationship between difference-in-differences and lagged-dependent-variable adjustment

Fan Li, Peng Ding

arxiv:1903.06286 v3 · 2019-03-14 · stat.AP · 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{7ZMFJUKOYIRLJZWSA273LCMMCG}

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	2026-05-17T23:42:42.025001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe5854d14ec222b4e6d206bfb5898c118e66659b8953899569a364667d3d5f02

Aliases

arxiv: 1903.06286 · arxiv_version: 1903.06286v3 · doi: 10.48550/arxiv.1903.06286 · pith_short_12: 7ZMFJUKOYIRL · pith_short_16: 7ZMFJUKOYIRLJZWS · pith_short_8: 7ZMFJUKO

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/7ZMFJUKOYIRLJZWSA273LCMMCG \
  | 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: fe5854d14ec222b4e6d206bfb5898c118e66659b8953899569a364667d3d5f02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a99e00e6f02b74e1ea3ed6d67c80de1e23b0286e31d89a0ff00cd5c56b5ea985",
    "cross_cats_sorted": [
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2019-03-14T22:35:36Z",
    "title_canon_sha256": "dee0a9ed87a7ad61e6f2388040243e83fb2d370085515c3ef3d13b9c8f253d7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06286",
    "kind": "arxiv",
    "version": 3
  }
}