Instead of altering Bitcoin’s foundational rules, this new approach allows users to choose quantum resistant protection directly at the contract level.
Blockstream Research has announced that it has successfully carried out what it describes as the first transactions on a live Bitcoin sidechain secured with post quantum cryptography.
This development comes as concerns grow that advanced quantum computers could one day compromise the cryptographic systems that safeguard crypto wallets.
What Blockstream Has Developed
After a recent study by Google highlighted potential vulnerabilities across different parts of the crypto ecosystem such as wallets, block validation, and cross chain bridges, Blockstream Research confirmed that it had already implemented a post quantum signature system called SHRINCS on Bitcoin’s Liquid sidechain.
With this system, users can lock their funds into contracts that require quantum resistant signatures for spending. The design avoids modifying Bitcoin’s base protocol. Instead, it relies on Simplicity, Blockstream’s smart contract language, to introduce additional security features at the user level. This means individuals can choose enhanced protection without waiting for a full network upgrade.
The research also outlined four key risks affecting sidechains. These include fake transaction signatures, fake block signatures, compromised confidential transactions, and attacks targeting bridge systems that transfer assets between networks.
According to the team, progress on these issues varies. Protection for transaction signatures has already been implemented, while solutions for block signing and confidential assets are still being tested or developed. Work is also ongoing to secure Bitcoin that moves across bridges.
Google’s findings suggest that a highly advanced quantum computer could potentially break private keys tied to major crypto wallets within days. The report also warned about possible mempool attacks, where transactions could be intercepted before they are confirmed on the network.
Ongoing Debate Over Urgency and Solutions
The crypto community remains divided on how urgent the quantum threat really is. Changpeng Zhao, the former chief executive of Binance, recently stated that there is no immediate reason for alarm, noting that networks can adopt quantum resistant algorithms when necessary.
However, he also highlighted a notable concern. Around one million Bitcoin believed to belong to Satoshi Nakamoto are stored in an older wallet format that lacks protection against quantum attacks. He suggested that these coins might eventually need to be locked or taken out of circulation if they remain untouched.
Blockstream is also developing another solution known as SHRIMPS, which produces quantum resistant signatures that are about three times smaller than current standards used by the United States government. This design is tailored to fit Bitcoin’s limited block space. A Bitcoin Improvement Proposal is currently being prepared for this technology.
What has already been deployed on the Liquid network serves as a real world demonstration that such quantum resistant systems can function effectively under live conditions with actual funds involved.#crypto#cryptonews https://coinsignals.net https://t.me/coinsignalpublic
