Pith Number

pith:QA6XOBYE

pith:2011:QA6XOBYEY2FOSKWBNPDAOELITA

not attested not anchored not stored refs pending

Is there long-range memory in solar activity on time scales shorter than the sunspot period?

Kristoffer Rypdal, Martin Rypdal

arxiv:1111.4787 v1 · 2011-11-21 · physics.space-ph · astro-ph.SR · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QA6XOBYEY2FOSKWBNPDAOELITA}

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	2026-05-18T01:59:28.689337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

803d770704c68ae92ac16bc60711689829addf31fc9b4ec05ec504fa865660f2

Aliases

arxiv: 1111.4787 · arxiv_version: 1111.4787v1 · doi: 10.48550/arxiv.1111.4787 · pith_short_12: QA6XOBYEY2FO · pith_short_16: QA6XOBYEY2FOSKWB · pith_short_8: QA6XOBYE

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/QA6XOBYEY2FOSKWBNPDAOELITA \
  | 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: 803d770704c68ae92ac16bc60711689829addf31fc9b4ec05ec504fa865660f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67323ce6a439c97479703a42a3a906a1906ea68f2dd15075e7a454cc7e58af54",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2011-11-21T08:40:23Z",
    "title_canon_sha256": "cd2dc4a3026c9238a29c18f3e9720ab556cff81cca6aaba86b698fcf4859c9a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4787",
    "kind": "arxiv",
    "version": 1
  }
}