A Falcon-512 post-quantum account executed a live Starknet mainnet transfer for about $0.06 on July 22, a move Starknet described as the first fully compliant quantum-resistant blockchain transaction on a live mainnet at consumer-grade cost. The transfer advances a quantum-security transition StarkWare announced in late June 2026 and builds on two parts of Starknet's architecture: a STARK-based proving system that already avoids elliptic-curve pairings and an account abstraction model that lets wallet contracts change signature logic without a hard fork, asset migration or address replacement. StarkWare said the remaining elliptic-curve exposure sits at the account-signature layer, which this implementation replaced with Falcon-512 in collaboration with OpenZeppelin. The test also feeds into a three-phase roadmap that includes broader post-quantum migration of dependencies and tools to help existing users upgrade, while highlighting Starknet's claim that no Ethereum L1 or major L2 rival has yet shipped a comparable mainnet implementation.