Pith Number

pith:NPPL4AXR

pith:2013:NPPL4AXRVGRGFE6SHW632RPAXD

not attested not anchored not stored refs pending

Statistical distribution of current helicity in solar active regions over the magnetic cycle

D. Sokoloff, H. Zhang, K. Kuzanyan, T. Sakurai, Y. Gao

arxiv:1305.4528 v1 · 2013-05-20 · 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{NPPL4AXRVGRGFE6SHW632RPAXD}

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	2026-05-18T01:49:48.761226Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bdebe02f1a9a26293d23dbdbd45e0b8c2fec8025345ac7db3f6536d8a797d0a

Aliases

arxiv: 1305.4528 · arxiv_version: 1305.4528v1 · doi: 10.48550/arxiv.1305.4528 · pith_short_12: NPPL4AXRVGRG · pith_short_16: NPPL4AXRVGRGFE6S · pith_short_8: NPPL4AXR

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/NPPL4AXRVGRGFE6SHW632RPAXD \
  | 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: 6bdebe02f1a9a26293d23dbdbd45e0b8c2fec8025345ac7db3f6536d8a797d0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "073cd665936e89dfd6cc59a8fe576c1a3b54371392a02d8269f67ad886a9b8ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-20T13:57:14Z",
    "title_canon_sha256": "987cd4782172b0bee2a96eee0879b87592c23011ae55192f885cf4e7c048c252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4528",
    "kind": "arxiv",
    "version": 1
  }
}