Shor's algorithm breaks every elliptic-curve signature: Bitcoin, Ethereum and almost everything else.
So we built a vault that doesn't use one. It opens only with Falcon-512, a lattice signature with no known quantum attack. The contract checks all 666 bytes on-chain before anything moves.
falconvault.online
Wrote up how Falcon Vault works.
The vault is a PDA whose only authority is a Falcon-512 key. The browser signs a SHA-256 digest of the transaction, and the program verifies the 666-byte signature on-chain in ~184K CU before a Passthrough moves anything.
The wallet only pays the fee. No upgrade authority.
falconvault.onlineteapawt.net/falconvault_/status/21…