Pith Number

pith:VL66YEMZ

pith:2026:VL66YEMZQFFY4D2FHIFAFLIEJN

not attested not anchored not stored refs pending

Low-lying $D$ states in yttrium and actinium ions highly sensitive to variation of the fine structure constant

Akio Kawasaki

arxiv:2606.29676 v1 · 2026-06-29 · physics.atom-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{VL66YEMZQFFY4D2FHIFAFLIEJN}

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	2026-06-30T02:17:30.322030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aafdec1199814b8e0f453a0a02ad044b459cbd9e489a5deaf11c08e293bdfa4f

Aliases

arxiv: 2606.29676 · arxiv_version: 2606.29676v1 · doi: 10.48550/arxiv.2606.29676 · pith_short_12: VL66YEMZQFFY · pith_short_16: VL66YEMZQFFY4D2F · pith_short_8: VL66YEMZ

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/VL66YEMZQFFY4D2FHIFAFLIEJN \
  | 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: aafdec1199814b8e0f453a0a02ad044b459cbd9e489a5deaf11c08e293bdfa4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0d2e1f48bc1a9ed8d1f0a88551296594447931853616355548edd4618119690",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2026-06-29T00:52:22Z",
    "title_canon_sha256": "ee37c4da864a5bc8119d2ef2f3f7eb59c65e0cc8f90241dddb17bd81a0ded800"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.29676",
    "kind": "arxiv",
    "version": 1
  }
}