Pith Number

pith:F6TA7TRF

pith:2015:F6TA7TRFIEI4D2YA3NEUXXPFAS

not attested not anchored not stored refs pending

Quantum-enhanced multiparameter estimation in multiarm interferometers

Augusto Smerzi, Chiara Vitelli, Fabio Sciarrino, Luca Pezz\`e, Mario A. Ciampini, Nicol\`o Spagnolo

arxiv:1507.07814 v1 · 2015-07-28 · 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{F6TA7TRFIEI4D2YA3NEUXXPFAS}

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	2026-05-18T00:31:43.981054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fa60fce254111c1eb00db494bdde504a1deb1d7e9049e05f751f3967f57566d

Aliases

arxiv: 1507.07814 · arxiv_version: 1507.07814v1 · doi: 10.48550/arxiv.1507.07814 · pith_short_12: F6TA7TRFIEI4 · pith_short_16: F6TA7TRFIEI4D2YA · pith_short_8: F6TA7TRF

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/F6TA7TRFIEI4D2YA3NEUXXPFAS \
  | 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: 2fa60fce254111c1eb00db494bdde504a1deb1d7e9049e05f751f3967f57566d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20be50e915e1aee9d5d5bf1c5861ef34411548cf4fcdbd298eeb469c017f1593",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-07-28T15:36:01Z",
    "title_canon_sha256": "5e41e87ec201ea5ed4d9e5b018c7b2d28f1e3447f27108fcff4f3c3f2849fe50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07814",
    "kind": "arxiv",
    "version": 1
  }
}