Full post-quantum security in 2027 means every component Starknet relies on has moved off quantum-vulnerable cryptography. Starknet’s proving layer was designed this way from the start, and protocol changes are already live on mainnet. The remaining work covers accounts, existing contracts and dependencies Starknet currently shares with Ethereum.
Original roadmap (30 June 2026) ↗Share
Starknet is researching whether to move to its own post-quantum L1, which would put its remaining post-quantum upgrades under Starknet’s control rather than Ethereum’s timeline. In October’s non-binding governance poll, 93.52% of voting power backed the research. A joint research group from StarkWare and the Starknet Foundation is preparing a white paper as the next step. No decision has been made; any move to an L1 will go to a binding community vote.
The joint research group’s white paper is the next step. Any move to an L1 would then go to a binding community vote. This page will be updated at each step.
Starknet continues to run on Ethereum while the research proceeds, and its bridge, messaging and data availability still depend on Ethereum. Existing accounts do not change automatically: account owners choose when to adopt a post-quantum account, once wallets support it. The migration register ↓ tracks the current status of each component.
Quantum Hub