Pith Number

pith:XYQVH33U

pith:2019:XYQVH33UGVQLKG4MZDZBO3D67P

not attested not anchored not stored refs pending

Application of Quantum Annealing to Nurse Scheduling Problem

Kazuki Ikeda, Travis S. Humble, Yuma Nakamura

arxiv:1904.12139 v2 · 2019-04-27 · 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{XYQVH33UGVQLKG4MZDZBO3D67P}

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	2026-07-05T06:48:00.496866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be2153ef743560b51b8cc8f2176c7efbf83fde8022f7c6ddf14db75ed2ecf206

Aliases

arxiv: 1904.12139 · arxiv_version: 1904.12139v2 · doi: 10.48550/arxiv.1904.12139 · pith_short_12: XYQVH33UGVQL · pith_short_16: XYQVH33UGVQLKG4M · pith_short_8: XYQVH33U

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/XYQVH33UGVQLKG4MZDZBO3D67P \
  | 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: be2153ef743560b51b8cc8f2176c7efbf83fde8022f7c6ddf14db75ed2ecf206

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47f2ed45b4c65c05216e7fc93325cb6f23bcbcf5e177dea9c8896223c3562515",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-04-27T10:09:02Z",
    "title_canon_sha256": "f05a635ce6a7f1e73505da497ea9fcd1b72c8e8323aeeeda1783bc37bce10156"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12139",
    "kind": "arxiv",
    "version": 2
  }
}