Preparing for a breakthrough you can’t predict takes two things: a strong foundation and the ability to change it. Starknet’s migration shows both, and also shows where the work is unfinished. Foundation: per StarkWare, STARK proofs rely on hash functions rather than elliptic-curve hardness assumptions. The Quantum Hub’s migration register (19 Aug 2026) states the limit: that advantage covers the proving layer only, and security still depends on the chosen hashes, parameters, and implementation. Ability to change: accounts can adopt new signature verifiers, and StarkWare’s roadmap lists further protocol hash changes as published direction. Unfinished: contracts already deployed. New contracts can use post-quantum-secure storage key derivation, though per StarkWare’s roadmap it takes advanced skills. For existing contracts with Pedersen-based storage maps, the register lists migration tooling as research announced, with no public spec, released toolkit, or developer workflow yet. My view: this is the part to watch. Cryptographic agility is easy to claim for new code. The test is the contracts that already hold value. @Starknet Quantum Hub: https://t.co/KnYRDZEAYd