Pith Number

pith:UIJKNAZJ

pith:2025:UIJKNAZJXSZ6BLCNK5RB5U3GXE

not attested not anchored not stored refs pending

A spinless crystal for a high-performance solid-state $^{229}$Th nuclear clock

Anastassia N. Alexandrova, Andrei Derevianko, Eric R. Hudson, Harry W. T. Morgan, Hoang Bao Tran Tan, James E. S. Terhune, Ricky Elwell, Udeshika C. Perera

arxiv:2503.11374 v1 · 2025-03-14 · cond-mat.mtrl-sci · nucl-th · physics.atom-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UIJKNAZJXSZ6BLCNK5RB5U3GXE}

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.

Cited by

1 paper in Pith

A thorium-229 optical nuclear clock with feedback loop

Receipt and verification

First computed	2026-07-05T10:32:42.173071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a212a68329bcb3e0ac4d57621ed366b927982bab05f1bfe2add1df918026d817

Aliases

arxiv: 2503.11374 · arxiv_version: 2503.11374v1 · doi: 10.48550/arxiv.2503.11374 · pith_short_12: UIJKNAZJXSZ6 · pith_short_16: UIJKNAZJXSZ6BLCN · pith_short_8: UIJKNAZJ

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/UIJKNAZJXSZ6BLCNK5RB5U3GXE \
  | 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: a212a68329bcb3e0ac4d57621ed366b927982bab05f1bfe2add1df918026d817

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b08154f2780a6470779ea673ed538aba46301a84bad930e4d1958205b0fd499d",
    "cross_cats_sorted": [
      "nucl-th",
      "physics.atom-ph",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2025-03-14T13:18:14Z",
    "title_canon_sha256": "787a35110199559272ebcf8ee35059446e2ba7b6981be39060cb511809a9df6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.11374",
    "kind": "arxiv",
    "version": 1
  }
}