Pith Number

pith:S2BKPZKF

pith:2025:S2BKPZKFYOFQDR6RAPWLQLLCFL

not attested not anchored not stored refs pending

On the origin of long-term modulation in the Sun's magnetic activity cycle

Chitradeep Saha, Dibyendu Nandy, Suprabha Mukhopadhyay

arxiv:2504.16681 v1 · 2025-04-23 · 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{S2BKPZKFYOFQDR6RAPWLQLLCFL}

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	2026-07-05T10:53:03.215381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9682a7e545c38b01c7d103ecb82d622af967d3a950487abb397ae4738bb77f6a

Aliases

arxiv: 2504.16681 · arxiv_version: 2504.16681v1 · doi: 10.48550/arxiv.2504.16681 · pith_short_12: S2BKPZKFYOFQ · pith_short_16: S2BKPZKFYOFQDR6R · pith_short_8: S2BKPZKF

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/S2BKPZKFYOFQDR6RAPWLQLLCFL \
  | 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: 9682a7e545c38b01c7d103ecb82d622af967d3a950487abb397ae4738bb77f6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1deedb6f7e276104c4ea56ed065530878f0b9c96b1a2d1f45176879d9a416439",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-04-23T13:01:12Z",
    "title_canon_sha256": "35e3c05dea908551316ea320d47bbae599d09a22d905c4dcf90837793282fee6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.16681",
    "kind": "arxiv",
    "version": 1
  }
}