Pith Number

pith:D2GNHGOC

pith:2013:D2GNHGOC54RGIAQKPUBUNO7WQA

not attested not anchored not stored refs pending

Long-term temporal variations in the areas of sunspot groups

J. Javaraiah

arxiv:1305.5168 v3 · 2013-05-02 · 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{D2GNHGOC54RGIAQKPUBUNO7WQA}

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	2026-05-18T03:17:33.798347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e8cd399c2ef2264020a7d0346bbf68023ff898978566cbddd9c7037940ef411

Aliases

arxiv: 1305.5168 · arxiv_version: 1305.5168v3 · doi: 10.48550/arxiv.1305.5168 · pith_short_12: D2GNHGOC54RG · pith_short_16: D2GNHGOC54RGIAQK · pith_short_8: D2GNHGOC

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/D2GNHGOC54RGIAQKPUBUNO7WQA \
  | 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: 1e8cd399c2ef2264020a7d0346bbf68023ff898978566cbddd9c7037940ef411

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fef73a1e93d640e07bbae36f7be717c14168b91ae683c7a6e6d01a55808d29a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-02T08:29:02Z",
    "title_canon_sha256": "43adde5fef9bb60eba3822dc035e222cb02f522b86b9776e081bbcde7f695a2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5168",
    "kind": "arxiv",
    "version": 3
  }
}