The 256-bit elliptic curve cryptography that Bitcoin uses could be broken sooner than we think. Google targets 2029 for its own post-quantum migration. BIP 360 (Pay-to-Merkle-Root or P2MR) is the first official for step toward ensuring Bitcoin is prepared. Proposed by Hunter Beast and now merged into the official Bitcoin BIPs repository, it introduces a new output type that removes the vulnerable key-path spend while keeping a subset of Taproot functionality.