Pith Number

pith:OXFPCRX3

pith:2021:OXFPCRX3XW2JRKCV5DSG5CHTLK

not attested not anchored not stored refs pending

139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of $^9$Be$^+$ ions in a Penning trap

Christian Ospelkaus, Johannes Mielke, Juan M. Cornejo, Julia A. Coenders, Julian Pick, Malte Niemann, Stefan Ulmer, Teresa Meiners

arxiv:2106.13532 v2 · 2021-06-25 · 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{OXFPCRX3XW2JRKCV5DSG5CHTLK}

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	2026-07-05T03:40:00.150631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75caf146fbbdb498a855e8e46e88f35a91140a3ef7576e54a023ee403c2ff025

Aliases

arxiv: 2106.13532 · arxiv_version: 2106.13532v2 · doi: 10.48550/arxiv.2106.13532 · pith_short_12: OXFPCRX3XW2J · pith_short_16: OXFPCRX3XW2JRKCV · pith_short_8: OXFPCRX3

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/OXFPCRX3XW2JRKCV5DSG5CHTLK \
  | 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: 75caf146fbbdb498a855e8e46e88f35a91140a3ef7576e54a023ee403c2ff025

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cd1b650895639f5c13ed9e7bcfc81aef10c69c4ec7dc3f55d9d455475674a01",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2021-06-25T09:56:15Z",
    "title_canon_sha256": "ddc9342277c83a9c884cf9922743e34535020efe2d82533179aa1873cd4ddeaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.13532",
    "kind": "arxiv",
    "version": 2
  }
}