Pith Number

pith:UJZ4REFR

pith:2018:UJZ4REFRTVTLLFKQFATEIWQGUD

not attested not anchored not stored refs pending

How to capitalize on a priori contrasts in linear (mixed) models: A tutorial

Daniel J. Schad, Reinhold Kliegl, Shravan Vasishth, Sven Hohenstein

arxiv:1807.10451 v4 · 2018-07-27 · 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{UJZ4REFRTVTLLFKQFATEIWQGUD}

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	2026-05-17T23:40:20.637218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a273c890b19d66b595502826445a06a0cc2ef09e80c029c59d2215c677256e76

Aliases

arxiv: 1807.10451 · arxiv_version: 1807.10451v4 · doi: 10.48550/arxiv.1807.10451 · pith_short_12: UJZ4REFRTVTL · pith_short_16: UJZ4REFRTVTLLFKQ · pith_short_8: UJZ4REFR

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/UJZ4REFRTVTLLFKQFATEIWQGUD \
  | 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: a273c890b19d66b595502826445a06a0cc2ef09e80c029c59d2215c677256e76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1a0921ae40e3ab1b0b9e02abe0184c6c60bfd79a13399815548c1284852c364",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2018-07-27T06:34:15Z",
    "title_canon_sha256": "8f5054e1fb54906b3c66c3ab40d021e494f594e37424af62eaf2fd50f2ad6058"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10451",
    "kind": "arxiv",
    "version": 4
  }
}