Google has announced a 2029 deadline to transition its authentication services to post-quantum cryptography. According to NS3.AI, this move has intensified scrutiny on blockchains that continue to depend on elliptic-curve signatures. Android 17, Chrome, and Google Cloud have already implemented or support post-quantum protections. Ethereum has outlined an eight-year roadmap featuring weekly developer networks and four hard-fork milestones. In contrast, Bitcoin has yet to establish a coordinated migration plan.

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