Coinbase Urges Early Bitcoin Planning as Post-Quantum Shift May Take Years

Coinbase urged early preparation for Bitcoin’s transition to post-quantum security, warning that the process could take years and affect custody systems holding approximately 5% of all existing BTC. The company outlined technical considerations for the transition, including flexible Bitcoin output designs such as BIP-360, also known as P2MR, and P2TRv2. These designs could provide options for moving from current signature systems to methods intended to withstand future quantum-computing threats. Coinbase also proposed a phased migration that would support classical and post-quantum signature mechanisms during the changeover.

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