Pith Number

pith:FQ3G55YL

pith:2022:FQ3G55YLXSF4677GUAZSP4RJZA

not attested not anchored not stored refs pending

On the Determination of the Solar Rotation Elements i, {\Omega} and Period using Sunspot Observations by Ru{\dj}er Bo\v{s}kovi\'c in 1777

Dragan \v{S}poljari\'c, Mirko Husak, Roman Braj\v{s}a

arxiv:2203.02289 v1 · 2022-03-04 · 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{FQ3G55YLXSF4677GUAZSP4RJZA}

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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

Bo\v{s}kovi\'{c}'s Spherical Trigonometric Solution for Determining the Axis and Rate of Solar Rotation by Observing Sunspots in 1777

Receipt and verification

First computed	2026-07-05T04:02:03.416137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c366ef70bbc8bcf7fe6a03327f229c82c77e399758525205c7298e76e1a9943

Aliases

arxiv: 2203.02289 · arxiv_version: 2203.02289v1 · doi: 10.48550/arxiv.2203.02289 · pith_short_12: FQ3G55YLXSF4 · pith_short_16: FQ3G55YLXSF4677G · pith_short_8: FQ3G55YL

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/FQ3G55YLXSF4677GUAZSP4RJZA \
  | 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: 2c366ef70bbc8bcf7fe6a03327f229c82c77e399758525205c7298e76e1a9943

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "029a08950c1cd328f128b2baf1a16d6b7df9ea6b4a9406d573e713487f999d90",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-03-04T12:58:00Z",
    "title_canon_sha256": "e13b6b4e5ca0a66974d40d8bc81bdd68741cc9aa7e99ab8ecad7fd9724f07370"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.02289",
    "kind": "arxiv",
    "version": 1
  }
}