Bitcoin developers merged BIP-360 to limit quantum exposure by removing Taproot key-path spends
Bitcoin’s BIP-360 proposal has been merged into the official BIPs repository, introducing Pay-to-Merkle-Root, or P2MR, as a new output type intended to reduce Bitcoin’s long-term exposure to quantum threats. The proposal matters because it changes spending structure in a way that directly affects migration planning for custodians, exchanges, and treasury managers.