Pith Number

pith:5HZ2QWFX

pith:2017:5HZ2QWFXQEKUTSRQLSIA35JRYJ

not attested not anchored not stored refs pending

The ratio between the number of sunspot and the number of sunspot groups

A. Kilcik, B. Kirov, K. Georgieva, Yu. Nagovitsyn

arxiv:1710.01775 v1 · 2017-10-04 · 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{5HZ2QWFXQEKUTSRQLSIA35JRYJ}

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	2026-05-18T00:33:38.539769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9f3a858b7811549ca305c900df531c27aeffbc62ba9b56ff7c78779aaaa7d62

Aliases

arxiv: 1710.01775 · arxiv_version: 1710.01775v1 · doi: 10.48550/arxiv.1710.01775 · pith_short_12: 5HZ2QWFXQEKU · pith_short_16: 5HZ2QWFXQEKUTSRQ · pith_short_8: 5HZ2QWFX

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/5HZ2QWFXQEKUTSRQLSIA35JRYJ \
  | 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: e9f3a858b7811549ca305c900df531c27aeffbc62ba9b56ff7c78779aaaa7d62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d56c4265566619255ec139ae0c88e057eb60962f54b5965c3a9b30282f3b034",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-10-04T19:30:29Z",
    "title_canon_sha256": "486cbb3e8e5d947334265a1c75167863fdc50224516dc980231ae2e6983eaa06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.01775",
    "kind": "arxiv",
    "version": 1
  }
}