Pith Number

pith:FFTS6NMH

pith:2022:FFTS6NMHPELLBEDXROAEVFDXJN

not attested not anchored not stored refs pending

Eleven-year, 22-year and ~90-year solar cycles discovered in nitrate concentrations in a Dome Fuji (Antarctica) ice core

Hideaki Motoyama, Kazuya Takahashi, Takashi Imamura, Yoichi Nakai, Yuko Motizuki

arxiv:2209.11330 v1 · 2022-09-22 · astro-ph.SR · physics.geo-ph · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFTS6NMHPELLBEDXROAEVFDXJN}

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	2026-07-05T05:00:19.332723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29672f35877916b090778b804a94774b4b68abb099b6bb5cbde40d7097ee1f53

Aliases

arxiv: 2209.11330 · arxiv_version: 2209.11330v1 · doi: 10.48550/arxiv.2209.11330 · pith_short_12: FFTS6NMHPELL · pith_short_16: FFTS6NMHPELLBEDX · pith_short_8: FFTS6NMH

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/FFTS6NMHPELLBEDXROAEVFDXJN \
  | 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: 29672f35877916b090778b804a94774b4b68abb099b6bb5cbde40d7097ee1f53

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2742c5333958b43faf147e90905d06aa8cf4e9cc197f843f80aa6771d5dec45e",
    "cross_cats_sorted": [
      "physics.geo-ph",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-09-22T21:54:43Z",
    "title_canon_sha256": "8efa2e93f1d1828858ddd6a36840704b436d95ab094dc8b59ce4dd31daaf3121"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.11330",
    "kind": "arxiv",
    "version": 1
  }
}