Pith Number

pith:C442RVDI

pith:2018:C442RVDIHIWSXF7GAIQLBZHBSM

not attested not anchored not stored refs pending

Quantum non-demolition measurements: Concepts, theory and practice

C. S. Unnikrishnan

arxiv:1811.09613 v1 · 2018-11-22 · 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{C442RVDIHIWSXF7GAIQLBZHBSM}

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	2026-05-18T00:00:01.606433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1739a8d4683a2d2b97e60220b0e4e1930e7ab7e82c373fae795410d39b187e68

Aliases

arxiv: 1811.09613 · arxiv_version: 1811.09613v1 · doi: 10.48550/arxiv.1811.09613 · pith_short_12: C442RVDIHIWS · pith_short_16: C442RVDIHIWSXF7G · pith_short_8: C442RVDI

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/C442RVDIHIWSXF7GAIQLBZHBSM \
  | 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: 1739a8d4683a2d2b97e60220b0e4e1930e7ab7e82c373fae795410d39b187e68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58927a72d3806c6d71489a47789aafffa31cba09c2312a583ce4994c2cf8c154",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-11-22T08:25:17Z",
    "title_canon_sha256": "8283d1dccfb704d34196f3a2532ca7734681d3c71c5e38da28dccf3d22aa2232"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09613",
    "kind": "arxiv",
    "version": 1
  }
}