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StarkWare tests quantum-resistant Bitcoin transaction on mainnet
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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 facts
- Levy then introduced QSB in April, estimating that generating a transaction would require between $75 and $150 in GPU computation
- StarkWare spokesperson Nathan Jeffay told Cointelegraph that the completed transaction cost “low hundreds of dollars,” estimating the expense at around $150 to $200
- StarkWare said the experimental transaction demonstrated quantum-resistant Bitcoin spending without a fork, but it cost up to $200 and required direct miner submission
- Bitcoin developers are separately considering proposals including BIP-360, a proposed soft fork that would introduce a Pay-to-Merkle-Root output type while removing Taproot’s quantum-vulnerable
Summary
StarkWare researcher Avihu Levy has tested an experimental quantum-resistant transaction on the Bitcoin mainnet, in what the company described as the first transaction of its kind. According to StarkWare, the transaction was confirmed Wednesday in Bitcoin block 964,199. Levy’s paper and code repository said QSB combines hash-based one-time signatures with computational searches that bind an authorization to a specific transaction. The test moves Levy’s April proposal from theory to an onchain demonstration, showing that Bitcoin’s existing consensus rules can accommodate one form of quantum-resistant spending without a protocol change.