Pith Number

pith:4NBFEHDH

pith:2018:4NBFEHDH3LXG5YZLOYDKH2YDOF

not attested not anchored not stored refs pending

A Cautionary Tail: A Framework and Case Study for Testing Predictive Model Validity

David Yokum, Kevin H. Wilson, Peter C. Casey

arxiv:1807.03860 v2 · 2018-07-10 · 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{4NBFEHDH3LXG5YZLOYDKH2YDOF}

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	2026-05-18T00:10:36.701585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e342521c67daee6ee32b7606a3eb03717bfd013eb02e04c57c4caf1d7c5cd054

Aliases

arxiv: 1807.03860 · arxiv_version: 1807.03860v2 · doi: 10.48550/arxiv.1807.03860 · pith_short_12: 4NBFEHDH3LXG · pith_short_16: 4NBFEHDH3LXG5YZL · pith_short_8: 4NBFEHDH

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/4NBFEHDH3LXG5YZLOYDKH2YDOF \
  | 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: e342521c67daee6ee32b7606a3eb03717bfd013eb02e04c57c4caf1d7c5cd054

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cbe6ed01d293eab8975d81b1df6cd12700a6dd1679d3285df6df740b3ddcc234",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2018-07-10T20:58:28Z",
    "title_canon_sha256": "fd31480071fd906c6bcad994c7d73d2f7250bd469c21ee142a6bf201206e058e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.03860",
    "kind": "arxiv",
    "version": 2
  }
}