Pith Number

pith:DPQIWI7B

pith:2012:DPQIWI7B5VAZPQLGK25MALYKHX

not attested not anchored not stored refs pending

The long sunspot cycle 23 predicts a significant temperature decrease in cycle 24

Jan-Erik Solheim, Kjell Stordahl, Ole Humlum

arxiv:1202.1954 v1 · 2012-02-09 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPQIWI7B5VAZPQLGK25MALYKHX}

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	2026-05-18T01:58:31.838671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1be08b23e1ed4197c16656bac02f0a3decd147b764954e037f8d0e59a688bb0b

Aliases

arxiv: 1202.1954 · arxiv_version: 1202.1954v1 · doi: 10.48550/arxiv.1202.1954 · pith_short_12: DPQIWI7B5VAZ · pith_short_16: DPQIWI7B5VAZPQLG · pith_short_8: DPQIWI7B

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/DPQIWI7B5VAZPQLGK25MALYKHX \
  | 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: 1be08b23e1ed4197c16656bac02f0a3decd147b764954e037f8d0e59a688bb0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69963a69b6555cbce602d7d27a885be940a207894af439a9e729377d945b6351",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-02-09T11:15:04Z",
    "title_canon_sha256": "20ed41e2d6ce0e1d775f9afdfa8efc1e4839ea2e769a2dac75c5a131d1ab4922"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1954",
    "kind": "arxiv",
    "version": 1
  }
}