Pith Number

pith:FQPOFXKO

pith:2018:FQPOFXKO4BQWOEO7MXFOAM74ZD

not attested not anchored not stored refs pending

QEngine: An open-source C++ Library for Quantum Optimal Control of Ultracold Atoms

Jacob Sherson, Jens Jakob S{\o}rensen, Jesper Jensen, Till Heinzel

arxiv:1807.11731 v2 · 2018-07-31 · 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{FQPOFXKO4BQWOEO7MXFOAM74ZD}

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	2026-05-17T23:39:48.661855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c1ee2dd4ee0616711df65cae033fcc8dab65d9e36413547167a17a98ae0d1ca

Aliases

arxiv: 1807.11731 · arxiv_version: 1807.11731v2 · doi: 10.48550/arxiv.1807.11731 · pith_short_12: FQPOFXKO4BQW · pith_short_16: FQPOFXKO4BQWOEO7 · pith_short_8: FQPOFXKO

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/FQPOFXKO4BQWOEO7MXFOAM74ZD \
  | 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: 2c1ee2dd4ee0616711df65cae033fcc8dab65d9e36413547167a17a98ae0d1ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "653febd30320e008cbddc48695fddbe19647d4f94ed87e8e97a979f2c0a2d937",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-07-31T09:56:34Z",
    "title_canon_sha256": "0499f988def793b199cd1cc56bc889e6769ed8a8c822d2c6564d4789d46f9fa9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.11731",
    "kind": "arxiv",
    "version": 2
  }
}