Pith Number

pith:QCSZ7KIU

pith:2011:QCSZ7KIU2SZURNPLHQVHCSPXWU

not attested not anchored not stored refs pending

Ultimate Meteorological Question from Observational Astronomers: How Good is the Cloud Cover Forecast?

Q.-z. Ye, S.-S. Chen

arxiv:1104.1700 v2 · 2011-04-09 · physics.ao-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QCSZ7KIU2SZURNPLHQVHCSPXWU}

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	2026-05-18T02:22:10.234460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80a59fa914d4b348b5eb3c2a7149f7b5033390da71d71c77933e62d6600fc2ca

Aliases

arxiv: 1104.1700 · arxiv_version: 1104.1700v2 · doi: 10.48550/arxiv.1104.1700 · pith_short_12: QCSZ7KIU2SZU · pith_short_16: QCSZ7KIU2SZURNPL · pith_short_8: QCSZ7KIU

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/QCSZ7KIU2SZURNPLHQVHCSPXWU \
  | 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: 80a59fa914d4b348b5eb3c2a7149f7b5033390da71d71c77933e62d6600fc2ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9812a97839f86ec12afe2bdee441b714025db3843713950f39aee5e942b7e50",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "physics.ao-ph",
    "submitted_at": "2011-04-09T12:18:39Z",
    "title_canon_sha256": "6e2ba2cd13198b7d505c8fe425666036a07c8e289e272c6c42cef75860c4f89c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1700",
    "kind": "arxiv",
    "version": 2
  }
}