Pith Number

pith:WSXK4JSB

pith:2014:WSXK4JSBCTEWLLTIWKVK5FACJ4

not attested not anchored not stored refs pending

Optimal quantum states for frequency estimation

B. Kraus, F. Fr\"owis, M. Skotiniotis, W. D\"ur

arxiv:1402.6946 v2 · 2014-02-27 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSXK4JSBCTEWLLTIWKVK5FACJ4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:45:39.855266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4aeae264114c965ae68b2aaae94024f0bd485ae27c689986a6bf09e84af742c

Aliases

arxiv: 1402.6946 · arxiv_version: 1402.6946v2 · doi: 10.48550/arxiv.1402.6946 · pith_short_12: WSXK4JSBCTEW · pith_short_16: WSXK4JSBCTEWLLTI · pith_short_8: WSXK4JSB

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/WSXK4JSBCTEWLLTIWKVK5FACJ4 \
  | 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: b4aeae264114c965ae68b2aaae94024f0bd485ae27c689986a6bf09e84af742c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91102199f5196ef97f564c519b892eb57a70c8600bee03172daaa5a81108989d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-02-27T15:57:55Z",
    "title_canon_sha256": "340af4b5583b853a5769279cc575c9e03b39e9fdb198d3920e425013a3282678"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6946",
    "kind": "arxiv",
    "version": 2
  }
}