Pith Number

pith:7SYZFL7Z

pith:2012:7SYZFL7ZUGWBIYM36FBLDUEJWG

not attested not anchored not stored refs pending

Origin and Use of the Laplace Distribution in Daily Sunspot Numbers

Michael S. Wheatland, Patrick L. Noble

arxiv:1210.3119 v1 · 2012-10-11 · 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{7SYZFL7ZUGWBIYM36FBLDUEJWG}

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	2026-05-18T01:53:56.881276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcb192aff9a1ac14619bf142b1d089b1b928ccf5ef0743ed80443401d432c318

Aliases

arxiv: 1210.3119 · arxiv_version: 1210.3119v1 · doi: 10.48550/arxiv.1210.3119 · pith_short_12: 7SYZFL7ZUGWB · pith_short_16: 7SYZFL7ZUGWBIYM3 · pith_short_8: 7SYZFL7Z

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/7SYZFL7ZUGWBIYM36FBLDUEJWG \
  | 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: fcb192aff9a1ac14619bf142b1d089b1b928ccf5ef0743ed80443401d432c318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44d63017d84260dac99e0d24f3c59bdfcfadf346235e7afa7e709b23ea4ef223",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-10-11T04:21:33Z",
    "title_canon_sha256": "7cafc67990a0f07cd9575a6c055e1a06cd843d27619d87869c14722e5410b8c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.3119",
    "kind": "arxiv",
    "version": 1
  }
}