Pith Number

pith:GYUTCV4F

pith:2023:GYUTCV4F5UAE57JIEC5CGQHNEH

not attested not anchored not stored refs pending

ddml: Double/debiased machine learning in Stata

Achim Ahrens, Christian B. Hansen, Mark E. Schaffer, Thomas Wiemann

arxiv:2301.09397 v3 · 2023-01-23 · econ.EM · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GYUTCV4F5UAE57JIEC5CGQHNEH}

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	2026-07-05T07:30:46.353752Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3629315785ed004efd2820ba2340ed21f7adf5f42413c2152f9f1c9d6b334689

Aliases

arxiv: 2301.09397 · arxiv_version: 2301.09397v3 · doi: 10.48550/arxiv.2301.09397 · pith_short_12: GYUTCV4F5UAE · pith_short_16: GYUTCV4F5UAE57JI · pith_short_8: GYUTCV4F

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/GYUTCV4F5UAE57JIEC5CGQHNEH \
  | 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: 3629315785ed004efd2820ba2340ed21f7adf5f42413c2152f9f1c9d6b334689

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d26b1b8da63007a77f9862737dde01a72932781becd419bb93f7bd1e88d3dada",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "econ.EM",
    "submitted_at": "2023-01-23T12:37:34Z",
    "title_canon_sha256": "437634a693aa26e65914126fb8773abb4b296204fe1c4668b16206158d7332c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.09397",
    "kind": "arxiv",
    "version": 3
  }
}