Pith Number

pith:W6RDW42J

pith:2023:W6RDW42J2DEMXKVNJV7SUI6UNT

not attested not anchored not stored refs pending

Towards a transportable Ca$^+$ optical clock with a systematic uncertainty of $4.8\times 10^{-18}$

Baolin Zhang, Hua Guan, Huaqing Zhang, Kelin Gao, Mengyan Zeng, Miao Wang, Ruming Hu, Yanmei Hao, Yao Huang, Zheng Chen, Zixiao Ma

arxiv:2303.07566 v1 · 2023-03-14 · physics.atom-ph · physics.ins-det · 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{W6RDW42J2DEMXKVNJV7SUI6UNT}

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	2026-07-05T05:51:07.521921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7a23b7349d0c8cbaaad4d7f2a23d46cd2faccd8c41da8a5f7fc7a37232b36cd

Aliases

arxiv: 2303.07566 · arxiv_version: 2303.07566v1 · doi: 10.48550/arxiv.2303.07566 · pith_short_12: W6RDW42J2DEM · pith_short_16: W6RDW42J2DEMXKVN · pith_short_8: W6RDW42J

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/W6RDW42J2DEMXKVNJV7SUI6UNT \
  | 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: b7a23b7349d0c8cbaaad4d7f2a23d46cd2faccd8c41da8a5f7fc7a37232b36cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c970a1d3b2818b8e82063a1ab23c1b6cf7efe6b1e23d4a41ebb320101a2cc581",
    "cross_cats_sorted": [
      "physics.ins-det",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2023-03-14T01:29:55Z",
    "title_canon_sha256": "5dfe06845972eb248f63dd064afe4e1f17564375011e4f0e545118b9c28e64b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.07566",
    "kind": "arxiv",
    "version": 1
  }
}