Pith Number

pith:5GZGFS5H

pith:2013:5GZGFS5H2CLVKGWPBBQHPSH6CD

not attested not anchored not stored refs pending

An atomic clock with $10^{-18}$ instability

A. D. Ludlow, C. W. Oates, J. A. Sherman, K. Beloy, M. Pizzocaro, M. Schioppo, N. B. Phillips, N. D. Lemke, N. Hinkley

arxiv:1305.5869 v1 · 2013-05-24 · physics.atom-ph · physics.optics · quant-ph

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

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

Detecting gravitational wave background with equivalent configurations in the network of space based optical lattice clocks

Receipt and verification

First computed	2026-05-18T03:12:57.564451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9b262cba7d097551acf086077c8fe10ee12112fcadb43b0771f43e47371d167

Aliases

arxiv: 1305.5869 · arxiv_version: 1305.5869v1 · doi: 10.48550/arxiv.1305.5869 · pith_short_12: 5GZGFS5H2CLV · pith_short_16: 5GZGFS5H2CLVKGWP · pith_short_8: 5GZGFS5H

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/5GZGFS5H2CLVKGWPBBQHPSH6CD \
  | 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: e9b262cba7d097551acf086077c8fe10ee12112fcadb43b0771f43e47371d167

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dbe00efd38382bf2f7ea5eae4f4cbabca441aec77ec213be6743e053554db4b",
    "cross_cats_sorted": [
      "physics.optics",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2013-05-24T23:46:15Z",
    "title_canon_sha256": "d840d4dc09fb0f70b99717c537c06f208e5bfb90239ce55afc00745fc4453deb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5869",
    "kind": "arxiv",
    "version": 1
  }
}