Coinbase flags quantum risk as chains prepare

Coinbase has highlighted Algorand and Aptos as among the networks best positioned to address future quantum computing risks, while warning other blockchains may be more vulnerable.

The exchange’s quantum advisory board said sufficiently powerful quantum computers could eventually break blockchain cryptography, though such technology is likely at least a decade away.

“A sufficiently powerful quantum computer could one day break the cryptography that secures digital assets across major blockchains,”

Coinbase said.

Algorand was noted for its staged roadmap toward quantum readiness and existing support for quantum-resistant accounts, including a recent mainnet transaction, though some consensus mechanisms remain exposed.

Aptos was described as well positioned due to its account design, allowing users to upgrade to quantum-secure keys without moving assets to new wallets.

Coinbase warned that proof-of-stake networks such as Ethereum and Solana may face higher risks due to validator signature schemes, though both are developing mitigation strategies.

The report said networks may eventually require users to migrate to quantum-resistant wallets, with vulnerable accounts potentially rendered unusable if left unprotected.

At the time of reporting, Ethereum price was $2,393.48.