Pith Number

pith:NBSHOZQE

pith:2026:NBSHOZQE5BMG5RXHSKWRE26IFE

not attested not anchored not stored refs pending

Principal Covariate Regression with Nuclear Norm Penalty

Kaiwen Liu, Lisa Verbeij, Mark de Rooij, Wouter Weeda

arxiv:2606.23174 v1 · 2026-06-22 · 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{NBSHOZQE5BMG5RXHSKWRE26IFE}

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	2026-06-23T03:14:12.169803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6864776604e8586ec6e792ad126bc82908e42e59609bc2971654838120946c1b

Aliases

arxiv: 2606.23174 · arxiv_version: 2606.23174v1 · doi: 10.48550/arxiv.2606.23174 · pith_short_12: NBSHOZQE5BMG · pith_short_16: NBSHOZQE5BMG5RXH · pith_short_8: NBSHOZQE

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/NBSHOZQE5BMG5RXHSKWRE26IFE \
  | 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: 6864776604e8586ec6e792ad126bc82908e42e59609bc2971654838120946c1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f8af13e9abfb37579911ad35bd74af429ed0e59f932747c7c07e0a9862e29e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-06-22T11:13:03Z",
    "title_canon_sha256": "91317e2a0da2b8f186f4f60626a2e2346db1a116d2333c78c4ddb46c5883c6af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.23174",
    "kind": "arxiv",
    "version": 1
  }
}