Pith Number

pith:4JWOQRQQ

pith:2013:4JWOQRQQAFMXJMZVKKA5U35F2Z

not attested not anchored not stored refs pending

The 11-years solar cycle as the manifestation of the dark Universe

D.H.H. Hoffmann, K. Zioutas, M. Tsagri, T. Papaevangelou, V. Anastassopoulos, Y.K. Semertzidis

arxiv:1309.4021 v1 · 2013-09-16 · 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{4JWOQRQQAFMXJMZVKKA5U35F2Z}

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	2026-05-18T01:47:41.404577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e26ce84610015974b3355281da6fa5d65da191fe7d46a9a88e945b7c4666b0d7

Aliases

arxiv: 1309.4021 · arxiv_version: 1309.4021v1 · doi: 10.48550/arxiv.1309.4021 · pith_short_12: 4JWOQRQQAFMX · pith_short_16: 4JWOQRQQAFMXJMZV · pith_short_8: 4JWOQRQQ

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/4JWOQRQQAFMXJMZVKKA5U35F2Z \
  | 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: e26ce84610015974b3355281da6fa5d65da191fe7d46a9a88e945b7c4666b0d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5597eadbba58476dba67457da1ebd34a2c1c7316d60f63458758914f33c6dd35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-16T16:15:51Z",
    "title_canon_sha256": "f55bb273b911acad6f645c2ebe6685fd49f71b854c07f26350b8d7f3ae655cb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4021",
    "kind": "arxiv",
    "version": 1
  }
}