Coinbase’s Independent Advisory Board on Quantum Computing and Blockchain explained that a sufficiently powerful quantum computer might one day be able to break the cryptography that is used to secure digital assets. It also stated that such a computer is probably at least a decade away physically. The board in a new report has reviewed the level of preparedness of big blockchains in this regard and has recognized the initiatives taken by Algorand and Aptos, and at the same time has warned that some proof-of-stake networks are likely to be more vulnerable.
Algorand and Aptos Demonstrate Quantum Readiness
The paper stated that Algorand has a multi-stage plan to become fully quantum-ready and among the very first to introduce quantum-resistant cryptography on its network. Users are allowed to set up quantum-resistant accounts without the need for protocol changes, and Algorand has just completed its first quantum-resistant transaction on mainnet.
Making block proposals and committee voting are still to be figured out. Aptos was indicated as being in a very good position to make the switch. Its address model decouples public keys from account addresses, so users can be able to log on to post-quantum authentication keys through a signed transaction without needing to move assets to new accounts.
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Proof-of-Stake Blockchains Are More at Risk
Coinbase has cautioned that proof-of-stake blockchains like Ethereum and Solana might be more vulnerable because of their validator signature schemes. Solana has come up with a new signature scheme that allows users to transition their tokens to upgraded and quantum-resistant addresses. Ethereum is also on its way to quantum resistance as its developers have a roadmap in place to introduce quantum-resistant signatures soon.
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Migration Approaches and the Long-Term View
To address the risk of compromised wallets, the board recommended switching to quantum-safe wallets, with unmigrated assets being revoked as a measure to thwart potential exploitation. Although the threat is not a reality yet, readiness planning is being encouraged throughout the blockchain ecosystem.
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