Pith Number

pith:4FKIDX2R

pith:2026:4FKIDX2R55ZPCQQIIX6DQNE5HY

not attested not anchored not stored refs pending

PCA score regression: the art of losing power

Ciprian Crainiceanu, Erjia Cui, Nidhi Pai, Yu Lu

arxiv:2605.24118 v1 · 2026-05-22 · 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{4FKIDX2R55ZPCQQIIX6DQNE5HY}

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	2026-05-26T01:02:47.354085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e15481df51ef72f1420845fc38349d3e15276cf65a8902d1f76e2719a75d8aa7

Aliases

arxiv: 2605.24118 · arxiv_version: 2605.24118v1 · doi: 10.48550/arxiv.2605.24118 · pith_short_12: 4FKIDX2R55ZP · pith_short_16: 4FKIDX2R55ZPCQQI · pith_short_8: 4FKIDX2R

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/4FKIDX2R55ZPCQQIIX6DQNE5HY \
  | 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: e15481df51ef72f1420845fc38349d3e15276cf65a8902d1f76e2719a75d8aa7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4f59aef03b5ca07bde00731d882e5288a93a795a5d0eecdbe8446af79fe43eb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-05-22T18:24:46Z",
    "title_canon_sha256": "628b586cf9660132c4bf58ab4aa946563cb22f0b388c463b925e4baa2307fcac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24118",
    "kind": "arxiv",
    "version": 1
  }
}