Pith Number

pith:JK3M3VPM

pith:2012:JK3M3VPMXJ27B5PHJQZPGW4EBH

not attested not anchored not stored refs pending

The origin of grand minima in the sunspot cycle

Arnab Rai Choudhuri, Bidya Binay Karak

arxiv:1208.3947 v2 · 2012-08-20 · astro-ph.SR · astro-ph.EP · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JK3M3VPMXJ27B5PHJQZPGW4EBH}

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	2026-05-18T02:54:39.766132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ab6cdd5ecba75f0f5e74c32f35b8409ec097ede811f764107b3f7b9c7ecfda3

Aliases

arxiv: 1208.3947 · arxiv_version: 1208.3947v2 · doi: 10.48550/arxiv.1208.3947 · pith_short_12: JK3M3VPMXJ27 · pith_short_16: JK3M3VPMXJ27B5PH · pith_short_8: JK3M3VPM

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/JK3M3VPMXJ27B5PHJQZPGW4EBH \
  | 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: 4ab6cdd5ecba75f0f5e74c32f35b8409ec097ede811f764107b3f7b9c7ecfda3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a60fc713213a262d1d137214903033d16c7a3f748f1b2ecea2c2ddd2e53f4d1a",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-08-20T08:58:40Z",
    "title_canon_sha256": "dea7a1801259a0e443f752041757c2cf6168789110ee2671affcf02c3407e4c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3947",
    "kind": "arxiv",
    "version": 2
  }
}