Pith Number

pith:PXIJ2VAN

pith:2019:PXIJ2VANO7RGW36CEEFINAHHF7

not attested not anchored not stored refs pending

Differences in the solar cycle variability of simple and complex active regions during 1996-2018

Eija Tanskanen, Maarit K\"apyl\"a, Shabnam Nikbakhsh, Thomas Hackman

arxiv:1908.02226 v1 · 2019-08-06 · 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{PXIJ2VANO7RGW36CEEFINAHHF7}

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	2026-07-05T00:03:51.229108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dd09d540d77e26b6fc2210a8680e72ff36f6c5a31d670b01cdf5d61b1a25071

Aliases

arxiv: 1908.02226 · arxiv_version: 1908.02226v1 · doi: 10.48550/arxiv.1908.02226 · pith_short_12: PXIJ2VANO7RG · pith_short_16: PXIJ2VANO7RGW36C · pith_short_8: PXIJ2VAN

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/PXIJ2VANO7RGW36CEEFINAHHF7 \
  | 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: 7dd09d540d77e26b6fc2210a8680e72ff36f6c5a31d670b01cdf5d61b1a25071

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "614c09b74cb07320289036510fe40f766f80a16f724a5efc84ec68b3d50a9675",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-06T15:55:14Z",
    "title_canon_sha256": "c00f982e8a7bb42099ee507b2564c4fc4622e91db3ffacd0c86f7e5b3fbc2bad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02226",
    "kind": "arxiv",
    "version": 1
  }
}