Pith Number

pith:23QJKCXH

pith:2015:23QJKCXHBX3C56TOOV5QGR3BZY

not attested not anchored not stored refs pending

Inferring constructs of effective teaching from classroom observations: An application of Bayesian exploratory factor analysis without restrictions

Daniel F. McCaffrey, J. R. Lockwood, Terrance D. Savitsky

arxiv:1511.05360 v1 · 2015-11-17 · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{23QJKCXHBX3C56TOOV5QGR3BZY}

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	2026-05-18T01:26:40.526872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6e0950ae70df62efa6e757b034761ce09e8a375927c628232c6666470ee938d

Aliases

arxiv: 1511.05360 · arxiv_version: 1511.05360v1 · doi: 10.48550/arxiv.1511.05360 · pith_short_12: 23QJKCXHBX3C · pith_short_16: 23QJKCXHBX3C56TO · pith_short_8: 23QJKCXH

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/23QJKCXHBX3C56TOOV5QGR3BZY \
  | 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: d6e0950ae70df62efa6e757b034761ce09e8a375927c628232c6666470ee938d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16602c15ff2f433b9aa8b8200a97c73eea22d6d9fc1c2b4019a4a08c828a8f14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2015-11-17T11:52:34Z",
    "title_canon_sha256": "50b42b51077e056c0e2827e089600126bfe9abfa0c4b90736e12db67c1990b3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05360",
    "kind": "arxiv",
    "version": 1
  }
}