Pith Number

pith:Q4Z2PXM3

pith:2018:Q4Z2PXM362KP3YGNFDYHGJY3YY

not attested not anchored not stored refs pending

An Empirical Orthogonal Function Reanalysis of the Northern Polar External and Induced Magnetic Field During Solar Cycle 23

J.W. Gjerloev, M. P. Freeman, R. M. Shore

arxiv:1807.08533 v1 · 2018-07-23 · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4Z2PXM362KP3YGNFDYHGJY3YY}

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	2026-05-18T00:10:07.738487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8733a7dd9bf694fde0cd28f073271bc61633020632bfcd9c69dee6fd16e66ebe

Aliases

arxiv: 1807.08533 · arxiv_version: 1807.08533v1 · doi: 10.48550/arxiv.1807.08533 · pith_short_12: Q4Z2PXM362KP · pith_short_16: Q4Z2PXM362KP3YGN · pith_short_8: Q4Z2PXM3

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/Q4Z2PXM362KP3YGNFDYHGJY3YY \
  | 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: 8733a7dd9bf694fde0cd28f073271bc61633020632bfcd9c69dee6fd16e66ebe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96cb53d4a78b460551ca14e48a927468ec1312adc6f929b82ed49db66475c8a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2018-07-23T11:14:02Z",
    "title_canon_sha256": "ceee59b5651792ab3690786b9b91fdc3839044fe7e200e01b40cf80570adeb8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08533",
    "kind": "arxiv",
    "version": 1
  }
}