{
  "id": 3666183,
  "title": "StarkWare tests quantum-resistant Bitcoin transaction on mainnet",
  "url": "https://urgent.news/2026/08/27/starkware-tests-quantum-resistant-bitcoin-transaction-on-mainnet",
  "topic": "finance",
  "section": "Finance & Markets",
  "published": "2026-08-27T04:14:48.000Z",
  "source": {
    "name": "Cointelegraph",
    "slug": "cointelegraph",
    "url": "https://cointelegraph.com/news/starkware-quantum-resistant-bitcoin-transaction-mainnet"
  },
  "original_language": "en",
  "account": "StarkWare researcher Avihu Levy has successfully tested an experimental quantum-resistant Bitcoin transaction on the mainnet, marking the first of its kind. The transaction, confirmed in block 964,199, spent a 10,000-satoshi output protected by StarkWare's Quantum Safe Bitcoin (QSB) scheme. The transaction was mined by the MARA Pool after being submitted through their Slipstream service. QSB combines hash-based one-time signatures with computational searches to bind an authorization to a specific transaction, preventing forgery even if a quantum computer breaks Bitcoin's elliptic-curve cryptography. While the test demonstrates that existing Bitcoin consensus rules can accommodate quantum-resistant spending without a protocol change, the process cost up to $200 and required direct miner submission, making it nonstandard and requiring manual propagation by ordinary nodes. StarkWare CEO Eli Ben-Sasson stated that a soft fork should occur to address the issue, while QSB serves as a safety net until protocol-level protections are developed.",
  "summary": "StarkWare said the experimental transaction demonstrated quantum-resistant Bitcoin spending without a fork, but it cost up to $200 and required direct miner submission.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "The Block",
        "title": "First quantum-resistant Bitcoin transaction successfully executed, StarkWare says",
        "url": "https://urgent.news/2026/08/27/first-quantum-resistant-bitcoin-transaction-successfully-executed",
        "published": "2026-08-27T02:24:36.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}