Few people know this, but post-quantum-secure wallets are already live on Starknet.
S2morrow is a post-quantum-secure wallet using Falcon-512, a lattice-based, NIST-selected post-quantum signature scheme, instead of elliptic-curve signatures, and it can already sign real transactions on Starknet Mainnet.
Ready, Braavos, and Xverse have not migrated to this architecture yet, because they do not need to yet. But when the time comes, they will be able to.
And the beauty?
> No need for the chain to fork: this is already live on Mainnet!
> In time, Ready, Braavos, and Xverse users will be able to migrate their wallet architecture to a post-quantum-secure one in a single tx!!
All of this comes on top of the fact that Starknet’s proving system is already post-quantum secure, as recently highlighted by… Google.
Just pivot to Starknet.