Pith Number

pith:3XL2W7CB

pith:2019:3XL2W7CBSXRYEP75XSLOSHPHAE

not attested not anchored not stored refs pending

Effect of morphological asymmetry between leading and following sunspots on the prediction of solar cycle activity

H. Hotta, H. Iijima, S. Imada

arxiv:1908.04474 v1 · 2019-08-13 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3XL2W7CBSXRYEP75XSLOSHPHAE}

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	2026-07-05T00:06:53.381030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddd7ab7c4195e3823ffdbc96e91de7013b29f23840a6dc14cbab4a855adbeba5

Aliases

arxiv: 1908.04474 · arxiv_version: 1908.04474v1 · doi: 10.48550/arxiv.1908.04474 · pith_short_12: 3XL2W7CBSXRY · pith_short_16: 3XL2W7CBSXRYEP75 · pith_short_8: 3XL2W7CB

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/3XL2W7CBSXRYEP75XSLOSHPHAE \
  | 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: ddd7ab7c4195e3823ffdbc96e91de7013b29f23840a6dc14cbab4a855adbeba5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52561ffe3e346fb6dabf6d5840166915585641fa456292d4cfcf803916704344",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-13T03:34:49Z",
    "title_canon_sha256": "2dd4101eee8432bd6259295241baa07866394a18254bc3b85f493b2ee3fc6493"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04474",
    "kind": "arxiv",
    "version": 1
  }
}