Pith Number

pith:PB2WYJA6

pith:2019:PB2WYJA6HZAOGT3ZAN7VYDO5GP

not attested not anchored not stored refs pending

The Solar Benchmark: Rotational Modulation of the Sun Reconstructed from Archival Sunspot Records

Brett M. Morris, Eric Agol, Helen A.C. Giles, James R.A. Davenport, Leslie Hebb, Peter A. Gilman, Ruth Angus, Suzanne L. Hawley

arxiv:1901.04557 v1 · 2019-01-14 · 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{PB2WYJA6HZAOGT3ZAN7VYDO5GP}

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	2026-05-17T23:55:10.273136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78756c241e3e40e34f79037f5c0ddd33ddad4bda436c85d99b0b482802095489

Aliases

arxiv: 1901.04557 · arxiv_version: 1901.04557v1 · doi: 10.48550/arxiv.1901.04557 · pith_short_12: PB2WYJA6HZAO · pith_short_16: PB2WYJA6HZAOGT3Z · pith_short_8: PB2WYJA6

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/PB2WYJA6HZAOGT3ZAN7VYDO5GP \
  | 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: 78756c241e3e40e34f79037f5c0ddd33ddad4bda436c85d99b0b482802095489

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ba36cc0ec79dc938280db9a559d4f197e2f66699ea574c4cddc29ce1ea159c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-14T20:46:15Z",
    "title_canon_sha256": "aecd6c9f6816459d70d7a5cd47a2d4ea8bfa053470985d2f757abb7bb81a6c5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04557",
    "kind": "arxiv",
    "version": 1
  }
}