Pith Number

pith:WFGTOMPV

pith:2009:WFGTOMPVKJOI4DIT7HFKXYWFMY

not attested not anchored not stored refs pending

Weather at Sierra Negra: 7.3-year statistics and a new method to estimate the temporal fraction of cloud cover

A. Carrami\~nana, C. Guti\'errez, E. Carrasco, J. L. Avil\'es, J. Meza, J. Reyes, O. Yam, R. Avila

arxiv:0906.1169 v1 · 2009-06-05 · astro-ph.IM · 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{WFGTOMPVKJOI4DIT7HFKXYWFMY}

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	2026-05-18T02:13:28.651176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b14d3731f5525c8e0d13f9caabe2c56611cedc8449c496b375bf974da52aec7d

Aliases

arxiv: 0906.1169 · arxiv_version: 0906.1169v1 · doi: 10.48550/arxiv.0906.1169 · pith_short_12: WFGTOMPVKJOI · pith_short_16: WFGTOMPVKJOI4DIT · pith_short_8: WFGTOMPV

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/WFGTOMPVKJOI4DIT7HFKXYWFMY \
  | 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: b14d3731f5525c8e0d13f9caabe2c56611cedc8449c496b375bf974da52aec7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7014d821893b161fb448299d36c4cfa3ace013a6ee858196c8f9ac713ea2323e",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-06-05T17:23:02Z",
    "title_canon_sha256": "19c999d88b9ee4c932d2684bd4558eafe643444dc72ed3da576aedc0763d2e6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1169",
    "kind": "arxiv",
    "version": 1
  }
}