sometimes removing vulnerable cryptography can break the system you're trying to protect. that's an overlooked challenge in @Starknet's quantum roadmap. the Cairo VM's secp256k1/r1 syscalls support Ethereum-facing messaging and bridge interoperability. these elliptic-curve assumptions are quantum-vulnerable. but removing those syscalls before Ethereum migrates would break the bridge. this isn't a STARK proof problem. it's a coordination problem between two networks with different security upgrade schedules. that also gives the proposed independent L1 research a deeper meaning. the october 22 governance vote authorized investigation, not migration. any future design must explain how cross-chain messaging, asset exits and security guarantees survive. because a quantum-resistant network with broken interoperability hasn't solved the user's problem. to me, real cryptographic agility means retiring vulnerable dependencies without sacrificing the functionality built around them. as of october 30, this remains roadmap work, not completed quantum security. https://t.co/LVKEmrLK0T