Pith Number

pith:D4VHLBBZ

pith:2025:D4VHLBBZS6LALNNNI5M2QQ2GK7

not attested not anchored not stored refs pending

Dual frequency calibration to build a portable vapor cell optical clock with improved stability and without a frequency comb

Greeshma Gopinath, Sankar Davuluri, Sreeshna Subhash

arxiv:2507.04911 v1 · 2025-07-07 · physics.atom-ph · quant-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{D4VHLBBZS6LALNNNI5M2QQ2GK7}

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	2026-07-05T11:32:56.167868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f2a758439979605b5ad4759a8434657f375d3e47daa93d7df78e88223ee1825

Aliases

arxiv: 2507.04911 · arxiv_version: 2507.04911v1 · doi: 10.48550/arxiv.2507.04911 · pith_short_12: D4VHLBBZS6LA · pith_short_16: D4VHLBBZS6LALNNN · pith_short_8: D4VHLBBZ

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/D4VHLBBZS6LALNNNI5M2QQ2GK7 \
  | 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: 1f2a758439979605b5ad4759a8434657f375d3e47daa93d7df78e88223ee1825

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e24792a0279bc66e5531e7e80764fa59438d5e49e7cf38bbd6f400348f68546",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2025-07-07T11:56:05Z",
    "title_canon_sha256": "8ff5ac11bca3dc158a9b0f0060c3a61ade95a93be29d8bbc553e0053c6883a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.04911",
    "kind": "arxiv",
    "version": 1
  }
}