Pith Number

pith:XXK4IVGD

pith:2013:XXK4IVGDQ2ZDRKDNDNHKI3JQHG

not attested not anchored not stored refs pending

Magnetic helicity and energy spectra of a solar active region

(2) Nordita, 3), (3) Stockholm Univ., (4) Moscow State Univ., 5) ((1) Natl Astron. Obs., (5) Pushkov Inst.), Axel Brandenburg (2, Chinese Acad. Sci., D.D. Sokoloff (4, Hongqi Zhang (1)

arxiv:1311.2432 v2 · 2013-11-11 · 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{XXK4IVGDQ2ZDRKDNDNHKI3JQHG}

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	2026-05-18T02:55:49.723695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdd5c454c386b238a86d1b4ea46d3039af0764a80d65475c15fd6a5a6714a044

Aliases

arxiv: 1311.2432 · arxiv_version: 1311.2432v2 · doi: 10.48550/arxiv.1311.2432 · pith_short_12: XXK4IVGDQ2ZD · pith_short_16: XXK4IVGDQ2ZDRKDN · pith_short_8: XXK4IVGD

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/XXK4IVGDQ2ZDRKDNDNHKI3JQHG \
  | 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: bdd5c454c386b238a86d1b4ea46d3039af0764a80d65475c15fd6a5a6714a044

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c05921eada546d095c09499f40f647f3f80e5cf0508d7fc594fd7b0c845b0db0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-11T13:12:32Z",
    "title_canon_sha256": "847b66566f72e12a0e454790480368c41c186f1054626f0f376bd1978330f858"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2432",
    "kind": "arxiv",
    "version": 2
  }
}