Pith Number

pith:Y6D26ZOP

pith:2020:Y6D26ZOPUGR7WZ2E3VHY2DI3M6

not attested not anchored not stored refs pending

Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect

Aude Chambodut, Carl Haines, Chris J. Scott, Kathryn A. McWilliams, Luke A. Barnard, Mathew J. Owens, Mike Lockwood

arxiv:2012.13324 v1 · 2020-12-24 · physics.space-ph · astro-ph.EP · physics.geo-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{Y6D26ZOPUGR7WZ2E3VHY2DI3M6}

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	2026-07-05T02:01:57.250546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c787af65cfa1a3fb6744dd4f8d0d1b6797cd1373220ea07b5844448748eab60c

Aliases

arxiv: 2012.13324 · arxiv_version: 2012.13324v1 · doi: 10.48550/arxiv.2012.13324 · pith_short_12: Y6D26ZOPUGR7 · pith_short_16: Y6D26ZOPUGR7WZ2E · pith_short_8: Y6D26ZOP

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/Y6D26ZOPUGR7WZ2E3VHY2DI3M6 \
  | 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: c787af65cfa1a3fb6744dd4f8d0d1b6797cd1373220ea07b5844448748eab60c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4be804ee7a4860e910cc9f2d1e6e4b7425e794f1929be3e7c2b0ac70987f9c23",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2020-12-24T16:50:41Z",
    "title_canon_sha256": "6800ab8bd6b4b720094c5f7b331569645f6058f0f3c187127db732bcab3e2571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.13324",
    "kind": "arxiv",
    "version": 1
  }
}