Source: The Block
“Google Research published updated estimates warning that future quantum computers could break cryptocurrencies sooner than previously thought, though such an event is still several years away. In a Tuesday blog post, Google explained that most blockchain technologies and cryptocurrencies rely on the 256-bit elliptic curve discrete logarithm problem (ECDLP-256) to secure wallets and transactions. Citing the latest whitepaper from Google Research, the blog post said that the necessary quantum computing resources to break the ECDLP-256 have decreased significantly. … Google’s white paper added that the reduced execution time allows quantum computers to conduct real-time attacks within bitcoin’s average block time of 10 minutes. This enables “on-spend” attacks, which are quantum computing attacks that target active cryptocurrency transactions while they are still in the mempool.” (03/31/26)
https://www.theblock.co/post/395814/google-quantum-computing-earlier