Recent rapid advances in quantum computing have once again brought the quantum threat to the forefront of cryptocurrency security concerns, especially for Bitcoin.
The possibility that sufficiently powerful quantum computers could break existing cryptographic systems of cryptocurrencies raises concerns about the long-term security of digital assets.
Therefore, transitioning to quantum-resistant technologies and preparing existing networks for them is becoming increasingly important in the crypto sector.
First Quantum-Resistant Transaction Completed!
At this stage, StarkWare announced the completion of the first transaction designed to protect against security threats arising from quantum computing on the Bitcoin mainnet.
The company announced that a quantum attack-resistant transaction was executed on the Bitcoin mainnet using the Quantum Safe Bitcoin (QSB) method and confirmed by miners.
The statement explains that Quantum Safe Bitcoin (QSB) technology uses a hash-based cryptographic system that is resistant to quantum algorithms, instead of traditional elliptic curve cryptography.
What Does QSB Technology Do?
A significant portion of Bitcoin's current security architecture is based on cryptographic methods using elliptic curves, such as ECDSA and the Schnorr algorithm. It is believed that a sufficiently powerful quantum computer could overcome these mathematical problems using Shor's algorithm, allowing it to derive a private key from a public key. This could potentially make Bitcoin addresses that have previously published their public keys vulnerable to quantum attacks.
Thus, it was stated that the most important feature of QSB technology is its ability to be immediately integrated into existing Bitcoin scripting standards without changing the consensus algorithm or requiring a soft fork.
It was also noted that QSB uses an additional protection mechanism that prevents the public key from being disclosed until the transaction is confirmed by the Bitcoin network.
The Procedure Cost is High!
It was noted that one of the most significant drawbacks of QSB is its high computational cost compared to existing Bitcoin transactions.
In a study published in April 2026, StarkWare researcher Avihu Levy predicted the development cost for a GPU would be approximately $75 to $150. However, after actual testing on the mainnet, it was found that the cost is about $150–$200, or several hundred dollars. It was also noted that the computation process takes several hours.
Therefore, QSB is currently viewed more as an experimental method to protect high-value Bitcoin assets from quantum threats, rather than an economical alternative for daily Bitcoin transfers.
*This is not investment advice.
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