Pith Number

pith:WD7C2LAX

pith:2013:WD7C2LAXNGF7RWHDMH65GNFYPH

not attested not anchored not stored refs pending

Studies of grand minima in sunspot cycles from a flux transport solar dynamo model

Arnab Rai Choudhuri, Bidya Binay Karak

arxiv:1306.5438 v2 · 2013-06-23 · astro-ph.SR · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WD7C2LAXNGF7RWHDMH65GNFYPH}

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	2026-05-18T01:49:13.567363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0fe2d2c17698bf8d8e361fdd334b879df0be32718c68fa110e43b23f200828a

Aliases

arxiv: 1306.5438 · arxiv_version: 1306.5438v2 · doi: 10.48550/arxiv.1306.5438 · pith_short_12: WD7C2LAXNGF7 · pith_short_16: WD7C2LAXNGF7RWHD · pith_short_8: WD7C2LAX

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/WD7C2LAXNGF7RWHDMH65GNFYPH \
  | 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: b0fe2d2c17698bf8d8e361fdd334b879df0be32718c68fa110e43b23f200828a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d798974ccd37e0be1172489040c131617ca80ba78eda34c0b912b405b6bd5b8",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-06-23T16:43:48Z",
    "title_canon_sha256": "cca309f8689e8de8d3d8745f17bc49014ef9f647e74b681588e8989f19455ac0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5438",
    "kind": "arxiv",
    "version": 2
  }
}