Pith Number

pith:WL36IUYU

pith:2018:WL36IUYUD2ZZ5FYKHZAFN35PPY

not attested not anchored not stored refs pending

Tilt of sunspot bipoles in Solar Cycles 15 to 24

Alexander Pevtsov, Alexei Pevtsov, Andrey Tlatov, Elina Heikkinen, Ilpo Virtanen, Kalevi Mursula, Ksenia Tlatova, Luca Bertello, Nina Karachik, Valeria Vasil'eva

arxiv:1807.07913 v1 · 2018-07-20 · 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{WL36IUYUD2ZZ5FYKHZAFN35PPY}

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	2026-05-18T00:07:33.723219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2f7e453141eb39e970a3e4056efaf7e1b23e3cd803a490170c01fcc4777d2b8

Aliases

arxiv: 1807.07913 · arxiv_version: 1807.07913v1 · doi: 10.48550/arxiv.1807.07913 · pith_short_12: WL36IUYUD2ZZ · pith_short_16: WL36IUYUD2ZZ5FYK · pith_short_8: WL36IUYU

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/WL36IUYUD2ZZ5FYKHZAFN35PPY \
  | 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: b2f7e453141eb39e970a3e4056efaf7e1b23e3cd803a490170c01fcc4777d2b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5259827b6faf0e5b4660f635125e1370f6edd8e54ae5eb4dda61b0b1b37ada87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-20T16:04:59Z",
    "title_canon_sha256": "8d226536f32fda2bb5d48ebf845affd5129db67cb0ff4215f15eeeacf00875f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07913",
    "kind": "arxiv",
    "version": 1
  }
}