Google announced a 2029 deadline to migrate all authentication services to quantum-resistant cryptography. Bitcoin uses vulnerable ECDSA for signatures, raising concerns. Ethereum has prepared extensively, with a detailed roadmap and weekly devnets. Bitcoin lacks a coordinated effort.

Google warns that quantum computers could break current cryptographic standards, posing a significant threat to digital signatures. Bitcoin's ECDSA is particularly vulnerable. Vitalik Buterin and Nic Carter urge Bitcoin developers to act. Bitcoin's decentralized governance model complicates swift action.

Ethereum's post-quantum security effort has been ongoing since 2018, with multiple teams working towards a comprehensive migration plan. Bitcoin's lack of a coordinated effort leaves its future uncertain. Nic Carter warns that ETHBTC divergence may reflect the different priorities.
