Pith Number

pith:4KWEXXHA

pith:2020:4KWEXXHAP3X72VHXA3VTH77KLC

not attested not anchored not stored refs pending

Measurement cost of metric-aware variational quantum algorithms

B\'alint Koczor, Barnaby van Straaten

arxiv:2005.05172 v3 · 2020-05-11 · 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{4KWEXXHAP3X72VHXA3VTH77KLC}

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	2026-07-05T03:13:00.065434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2ac4bdce07eeffd54f706eb33ffea589f169ea239287ddca607f212c8d34b58

Aliases

arxiv: 2005.05172 · arxiv_version: 2005.05172v3 · doi: 10.48550/arxiv.2005.05172 · pith_short_12: 4KWEXXHAP3X7 · pith_short_16: 4KWEXXHAP3X72VHX · pith_short_8: 4KWEXXHA

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/4KWEXXHAP3X72VHXA3VTH77KLC \
  | 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: e2ac4bdce07eeffd54f706eb33ffea589f169ea239287ddca607f212c8d34b58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70a6ecd64ee4bc39800a6059fd2060341a7d6d8f93361d9e15170951d8d76fee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-05-11T15:06:29Z",
    "title_canon_sha256": "d9ee4a989b3a028539fde9ec69c6fb8218eb527947f172ffc8c8fbe93be0b17d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.05172",
    "kind": "arxiv",
    "version": 3
  }
}