{
  "annotation_id": "2fc3e61a-0416-489f-9f0e-9c853703c027",
  "date_created": "2026-03-02T18:01:59.881000Z",
  "date_modified": "2026-03-02T18:01:59.881000Z",
  "file_hash": "ebedacbc2d7feb13afcedc7b88d0e9cdbd418af08dc07bf0131adfebce85bd15",
  "private": false,
  "record": {
    "abstract": "Entanglement-based attacks, which are subtle and powerful, are usually\nbelieved to render quantum bit commitment insecure. We point out that the no-go\nargument leading to this view implicitly assumes the evidence-of-commitment to\nbe a monolithic quantum system. We argue that more general evidence structures,\nallowing for a composite, hybrid (classical-quantum) evidence, conduce to\nimproved security. In particular, we present and prove the security of the\nfollowing protocol: Bob sends Alice an anonymous state. She inscribes her\ncommitment $b$ by measuring part of it in the + (for $b = 0$) or $\\times$ (for\n$b=1$) basis. She then communicates to him the (classical) measurement outcome\n$R_x$ and the part-measured anonymous state interpolated into other, randomly\nprepared qubits as her evidence-of-commitment.",
    "arxiv_id": "quant-ph/0306155",
    "authors": [
      "R. Srikanth"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0031-8949/70/6/002",
    "journal_ref": "Physica Scripta 70, 343 (2004)",
    "title": "Quantum Bit Commitment with a Composite Evidence",
    "url": "https://arxiv.org/abs/quant-ph/0306155"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ab888a69-a00a-419b-89c4-98b343156b65",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}