Pith Number

pith:D7YI3R6X

pith:2019:D7YI3R6XC5VF5B445DQE7JPUZP

not attested not anchored not stored refs pending

Guidelines for developing optical clocks with $10^{-18}$ fractional frequency uncertainty

Alexandre Didier, Ali Al-Masoudi, Alvise Vianello, Antoine Rolland, Benjamin Rauf, \c{C}a\u{g}r{\i} \c{S}enel, Christian Lisdat, Christian Tamm, Ekkehard Peik, Erik Benkler, Geoffrey Barwood, H\'ector \'Alvarez Mart\'inez, Helen S. Margolis, Hubert Cybulski, Ian R. Hill, Jan W. Thomsen, J\'er\^ome Lodewyck, Lennart Pelzer, Marcin Bober, Marco Pizzocaro, Marco Schioppo, Mateusz Borkowski, Micha{\l} Zawada, Miroslav Dole\v{z}al, Moustafa Abdel-Hafiz, Nicolas Spethmann, Nils Huntemann, Nils Scharnhorst, Petr Balling, Piet O. Schmidt, Piotr Ablewski, Rachel M. Godun, Ramiz Hamid, Richard Hobson, Rodolphe Le Targat, Roman Ciury{\l}o, Roman Schwarz, S\"oren D\"orscher, Stephan Falke, Tanja E. Mehlst\"aubler, Thomas Legero, Thomas Lindvall, Uwe Sterr, William Bowden, Yann Le Coq

arxiv:1906.11495 v2 · 2019-06-27 · physics.atom-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{D7YI3R6XC5VF5B445DQE7JPUZP}

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	2026-07-04T23:55:12.410018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ff08dc7d7176a5e879ce8e04fa5f4cbe1c3e41f22dcc0a64f61283fd9a59c2e

Aliases

arxiv: 1906.11495 · arxiv_version: 1906.11495v2 · doi: 10.48550/arxiv.1906.11495 · pith_short_12: D7YI3R6XC5VF · pith_short_16: D7YI3R6XC5VF5B44 · pith_short_8: D7YI3R6X

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/D7YI3R6XC5VF5B445DQE7JPUZP \
  | 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: 1ff08dc7d7176a5e879ce8e04fa5f4cbe1c3e41f22dcc0a64f61283fd9a59c2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90062ed107b378c23282b9eb15c0a417fb9818b3d0c607eac0239bd8182a8f1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2019-06-27T08:25:31Z",
    "title_canon_sha256": "f0e91f747dd2c8a8b5e1106cc8eb3ec9c5da060ce7f514b58e4195fc47d4c561"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.11495",
    "kind": "arxiv",
    "version": 2
  }
}