Pith Number

pith:YMOH3G5C

pith:2015:YMOH3G5CVPQ2V2CNUNDJ5BAOAA

not attested not anchored not stored refs pending

Estimating Structural Mean Models with Multiple Instrumental Variables Using the Generalised Method of Moments

Frank Windmeijer, Paul S. Clarke, Tom M. Palmer

arxiv:1504.01955 v1 · 2015-04-08 · 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{YMOH3G5CVPQ2V2CNUNDJ5BAOAA}

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	2026-05-18T02:19:17.696884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c31c7d9ba2abe1aae84da3469e840e00146d528ba28cdcb8b96d083ca4b27613

Aliases

arxiv: 1504.01955 · arxiv_version: 1504.01955v1 · doi: 10.48550/arxiv.1504.01955 · pith_short_12: YMOH3G5CVPQ2 · pith_short_16: YMOH3G5CVPQ2V2CN · pith_short_8: YMOH3G5C

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/YMOH3G5CVPQ2V2CNUNDJ5BAOAA \
  | 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: c31c7d9ba2abe1aae84da3469e840e00146d528ba28cdcb8b96d083ca4b27613

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d06096b3d76be0308c4e4dd9fc824c0f0074dde9f11484c691ca89e8d105e7cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2015-04-08T13:22:52Z",
    "title_canon_sha256": "f24e9a04e4ceeef21578616083870bc7cc429c16826913c1058afd63eaa29f06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01955",
    "kind": "arxiv",
    "version": 1
  }
}