Pith Number

pith:QUCNROT6

pith:2014:QUCNROT6UZ47PK2ISANDCDTQKF

not attested not anchored not stored refs pending

Ultra-stable laser with average fractional frequency drift rate below $5\times10^{-19}/\mathrm{s}$

Christian Grebing, Christian Hagemann, Christian Lisdat, Fritz Riehle, Jun Ye, Michael J. Martin, Stephan Falke, Thomas Legero, Uwe Sterr

arxiv:1405.1759 v1 · 2014-05-07 · physics.optics · 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{QUCNROT6UZ47PK2ISANDCDTQKF}

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	2026-05-18T02:20:00.020954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8504d8ba7ea679f7ab48901a310e705148e99271b06c3b30ab005d3683c9275c

Aliases

arxiv: 1405.1759 · arxiv_version: 1405.1759v1 · doi: 10.48550/arxiv.1405.1759 · pith_short_12: QUCNROT6UZ47 · pith_short_16: QUCNROT6UZ47PK2I · pith_short_8: QUCNROT6

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/QUCNROT6UZ47PK2ISANDCDTQKF \
  | 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: 8504d8ba7ea679f7ab48901a310e705148e99271b06c3b30ab005d3683c9275c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7f193729a1d92f95944b605c260276a13343b1ca700ec15818723dd41260318",
    "cross_cats_sorted": [
      "physics.atom-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2014-05-07T21:35:24Z",
    "title_canon_sha256": "ba920c68ec172b6696260b09f98b59d4b91f5aa15fff643ef8a616ca555d67b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1759",
    "kind": "arxiv",
    "version": 1
  }
}