Pith Number

pith:BJ7UTHW7

pith:2016:BJ7UTHW72JMTXWPBQYJ6OSQ34Z

not attested not anchored not stored refs pending

A Statistical Analysis of Solar Surface Indices Through the Solar Activity Cycles 21-23

Ferhat Nutku, Jagdev Singh, Muthu Priyal, Umit Deniz Goker

arxiv:1604.03011 v2 · 2016-04-11 · 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{BJ7UTHW72JMTXWPBQYJ6OSQ34Z}

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	2026-05-18T01:06:28.698673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a7f499edfd2593bd9e18613e74a1be6674a186379b4f3df547160b76a7eb180

Aliases

arxiv: 1604.03011 · arxiv_version: 1604.03011v2 · doi: 10.48550/arxiv.1604.03011 · pith_short_12: BJ7UTHW72JMT · pith_short_16: BJ7UTHW72JMTXWPB · pith_short_8: BJ7UTHW7

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/BJ7UTHW72JMTXWPBQYJ6OSQ34Z \
  | 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: 0a7f499edfd2593bd9e18613e74a1be6674a186379b4f3df547160b76a7eb180

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67df1ac75297cc3203a46d13f0f26b79b078694ced3d052986965d40c79dd7a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-04-11T15:54:03Z",
    "title_canon_sha256": "2f0b5e0c6481724de99d7c741b5bf0dd6abfbd3de123e57b1598c07d282a7d87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03011",
    "kind": "arxiv",
    "version": 2
  }
}