Pith Number

pith:MD454OCO

pith:2017:MD454OCOKTG3PUY5S2GUXN5XLM

not attested not anchored not stored refs pending

Principal component analysis of geomagnetic activity: New information on solar wind

Kalevi Mursula, Lauri Holappa

arxiv:1709.06885 v1 · 2017-09-19 · physics.space-ph · 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{MD454OCOKTG3PUY5S2GUXN5XLM}

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	2026-05-18T00:07:37.986946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60f9de384e54cdb7d31d968d4bb7b75b025cc6d1683e551e759e8e1a2d1fba5b

Aliases

arxiv: 1709.06885 · arxiv_version: 1709.06885v1 · doi: 10.48550/arxiv.1709.06885 · pith_short_12: MD454OCOKTG3 · pith_short_16: MD454OCOKTG3PUY5 · pith_short_8: MD454OCO

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/MD454OCOKTG3PUY5S2GUXN5XLM \
  | 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: 60f9de384e54cdb7d31d968d4bb7b75b025cc6d1683e551e759e8e1a2d1fba5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ea73bcfbed3a870a5217b674f6dd16c6e71934f06abd55daef05a06627c6073",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2017-09-19T12:26:27Z",
    "title_canon_sha256": "e9d5c92bafccf621c6ea0e9549194b0775e6c511724f005dc337f1055159d7ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06885",
    "kind": "arxiv",
    "version": 1
  }
}