Pith Number

pith:QZRKFUK6

pith:2013:QZRKFUK65PHP3UFX26D73LAUVX

not attested not anchored not stored refs pending

Precision bounds for noisy nonlinear quantum metrology

Howard M. Wiseman, Marcin Zwierz

arxiv:1309.2039 v3 · 2013-09-09 · 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{QZRKFUK65PHP3UFX26D73LAUVX}

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	2026-05-18T02:59:06.030772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8662a2d15eebcefdd0b7d787fdac14ade9eb5586657ba0e61ac2756be7159fcc

Aliases

arxiv: 1309.2039 · arxiv_version: 1309.2039v3 · doi: 10.48550/arxiv.1309.2039 · pith_short_12: QZRKFUK65PHP · pith_short_16: QZRKFUK65PHP3UFX · pith_short_8: QZRKFUK6

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/QZRKFUK65PHP3UFX26D73LAUVX \
  | 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: 8662a2d15eebcefdd0b7d787fdac14ade9eb5586657ba0e61ac2756be7159fcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "149877bec5f12ddc145e3abce8530bc7776777bf8e3b450d5b6a864a0674e4db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-09T04:18:25Z",
    "title_canon_sha256": "b23500f12b57adec07054be03b8856f8fd56d191eb8200c559be95a04f848be9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2039",
    "kind": "arxiv",
    "version": 3
  }
}