{
  "title": "Public evidence to record before drawing a Bitcoin exposure conclusion",
  "article": "https://synxcrypto.com/articles/can-quantum-computers-break-bitcoin-key-exposure.php#comparison-table",
  "reviewed": "2026-09-21",
  "scope": "Editorial reference table; not a SYNX laboratory measurement. Preserve qualifiers in each row.",
  "columns": [
    "Inventory field",
    "Evidence to record",
    "Limitation to preserve"
  ],
  "rows": [
    [
      "Output identity",
      "The specific output and the network being assessed",
      "A wallet name does not identify every output it controls"
    ],
    [
      "Spending history",
      "Whether a relevant key or script appeared in a spend",
      "A history entry alone does not demonstrate key recovery"
    ],
    [
      "Reuse or other disclosure",
      "Observed reuse or a documented public-key disclosure",
      "Missing evidence must remain unknown"
    ],
    [
      "Authorization path",
      "The condition that permits spending the assessed output",
      "Do not substitute a different asset's signature scheme"
    ],
    [
      "Attack opportunity",
      "Whether the discussion concerns persistent or spending-time exposure",
      "A window of exposure is not a measured attack runtime"
    ]
  ],
  "sources": [
    {
      "url": "https://synxcrypto.com/articles/02-when-will-quantum-computers-break-bitcoin-ecdsa.php",
      "label": "SYNX: public-key exposure and Bitcoin signing"
    },
    {
      "url": "https://www.nist.gov/cybersecurity-and-privacy/what-post-quantum-cryptography",
      "label": "NIST: conditions and uncertainty of the quantum threat"
    }
  ]
}