Pith Number

pith:OTBU4UJ7

pith:2015:OTBU4UJ7MC5BDMYJFFG5LLM2S5

not attested not anchored not stored refs pending

Precision isotope shift measurements in Ca$^+$ using highly sensitive detection schemes

Christopher N. Angstmann, Fabian Wolf, Florian Gebert, Julian C. Berengut, Piet O. Schmidt, Yong Wan

arxiv:1504.03139 v1 · 2015-04-13 · 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{OTBU4UJ7MC5BDMYJFFG5LLM2S5}

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	2026-05-18T01:35:54.639136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74c34e513f60ba11b309294dd5ad9a97786422f0657740e98a68f98382116fc9

Aliases

arxiv: 1504.03139 · arxiv_version: 1504.03139v1 · doi: 10.48550/arxiv.1504.03139 · pith_short_12: OTBU4UJ7MC5B · pith_short_16: OTBU4UJ7MC5BDMYJ · pith_short_8: OTBU4UJ7

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/OTBU4UJ7MC5BDMYJFFG5LLM2S5 \
  | 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: 74c34e513f60ba11b309294dd5ad9a97786422f0657740e98a68f98382116fc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76befa17a4e74f809e498705cd7e0f841dd83f6391e02dcdd5216205ba8f8a0d",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-04-13T11:31:56Z",
    "title_canon_sha256": "8d2560fbfa968cb725f02da8c7b8956eb620f095ac52676a74bd1d459b834064"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03139",
    "kind": "arxiv",
    "version": 1
  }
}