Pith Number

pith:NEQ4CTUN

pith:2011:NEQ4CTUNFTQYMCZXHYMM6SUJZH

not attested not anchored not stored refs pending

Making optical atomic clocks more stable with $10^{-16}$ level laser stabilization

A. D. Ludlow, C. W. Oates, J. A. Sherman, L.-S. Ma, N. D. Lemke, R. W. Fox, Y. Y. Jiang

arxiv:1101.1351 v1 · 2011-01-07 · 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{NEQ4CTUNFTQYMCZXHYMM6SUJZH}

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	2026-05-18T02:04:12.028666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6921c14e8d2ce1860b373e18cf4a89c9c51ab614fd0871ade69cec59ab182137

Aliases

arxiv: 1101.1351 · arxiv_version: 1101.1351v1 · doi: 10.48550/arxiv.1101.1351 · pith_short_12: NEQ4CTUNFTQY · pith_short_16: NEQ4CTUNFTQYMCZX · pith_short_8: NEQ4CTUN

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/NEQ4CTUNFTQYMCZXHYMM6SUJZH \
  | 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: 6921c14e8d2ce1860b373e18cf4a89c9c51ab614fd0871ade69cec59ab182137

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c0793bfa00b676c3fde9b15b1aba29c97f6d081ee0f91dcd28ed50839435ff0",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2011-01-07T04:21:47Z",
    "title_canon_sha256": "3afeb9fd85897f32496185bfa84db1e27c8d7f1c912c59ba4d49e364d47630cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1351",
    "kind": "arxiv",
    "version": 1
  }
}