Pith Number

pith:RDST64K2

pith:2026:RDST64K2UV454VKTXRFQROXXF4

not attested not anchored not stored refs pending

Changepoint Detection in Categorical Time Series with Application to Daily Total Cloud Cover in Canada

Mo Li, QiQi Lu, Xiaolan Wang

arxiv:2605.20621 v1 · 2026-05-20 · stat.ME · stat.AP · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RDST64K2UV454VKTXRFQROXXF4}

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	2026-05-21T01:04:45.205089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88e53f715aa579de5553bc4b08baf72f036445dc01ad21315727fb18a4a735a8

Aliases

arxiv: 2605.20621 · arxiv_version: 2605.20621v1 · doi: 10.48550/arxiv.2605.20621 · pith_short_12: RDST64K2UV45 · pith_short_16: RDST64K2UV454VKT · pith_short_8: RDST64K2

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/RDST64K2UV454VKTXRFQROXXF4 \
  | 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: 88e53f715aa579de5553bc4b08baf72f036445dc01ad21315727fb18a4a735a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c35ca3f9440791ea56114a13619399ed52aae0afd77f8b5c29c3cebe8a87c538",
    "cross_cats_sorted": [
      "stat.AP",
      "stat.CO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2026-05-20T02:14:24Z",
    "title_canon_sha256": "39349a26d4b2de2720e692f477ed87848c2bf13f76dc422cf6b75511562d2d8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20621",
    "kind": "arxiv",
    "version": 1
  }
}