Pith Number

pith:A4BS63DO

pith:2025:A4BS63DONKQJLF57CIX3GKVH5Y

not attested not anchored not stored refs pending

Forecasting the solar cycle using variational data assimilation: validation on cycles 22 to 25

A. Fournier, A. S. Brun, A. Strugarek, B. Perri, C.P. Hung, L. Jouve, O. Talagrand, S. Hazra

arxiv:2505.01053 v1 · 2025-05-02 · 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{A4BS63DONKQJLF57CIX3GKVH5Y}

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.

Cited by

1 paper in Pith

Design and Performance of the Carruthers Geocoronal Imager

Receipt and verification

First computed	2026-07-05T11:29:58.983845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07032f6c6e6aa09597bf122fb32aa7ee30b68074b9802efde5a201cd14668c98

Aliases

arxiv: 2505.01053 · arxiv_version: 2505.01053v1 · doi: 10.48550/arxiv.2505.01053 · pith_short_12: A4BS63DONKQJ · pith_short_16: A4BS63DONKQJLF57 · pith_short_8: A4BS63DO

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/A4BS63DONKQJLF57CIX3GKVH5Y \
  | 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: 07032f6c6e6aa09597bf122fb32aa7ee30b68074b9802efde5a201cd14668c98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0610a219b1e4554b651bcc20d82090cc01fac33571127f2d93f3ffc760ae7292",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-05-02T06:59:03Z",
    "title_canon_sha256": "6b4b5642cdf364796f1826f0ae74ebcc27cb288e875340e60683736540bb4ea0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.01053",
    "kind": "arxiv",
    "version": 1
  }
}