Ethereum promises quantum resistance by 2029

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Ethereum promises quantum resistance

Which other proposals could make it into the upgrade

A-tier proposals are expected to be included alongside the core changes unless developers are forced to reduce the scope of the upgrade.

They include VOPS Profiles for FOCIL Eligibility (EIP-8369), which is linked to FOCIL, as well as Keyed Nonces (EIP-8250) and Recent Roots (EIP-8272), which complement Frame Transactions.

B-tier proposals will be considered individually, while C-tier proposals have been assigned a lower priority. Developers have already declined to include another 28 EIPs in Hegotá.

Ethereum prepares for “Q-day”

Separately, EF Protocol published its long-term priorities for the network. One of its main goals is to make Ethereum L1 fully quantum-resistant across the execution, consensus, and data layers by December 2029.

The Ethereum Foundation is working on the assumption that the so-called Q-day — the point at which quantum computers could potentially break cryptographic systems used today — could arrive as early as 2030.

Developers acknowledge that most forecasts put that date further into the future, but they are deliberately planning around an aggressive scenario. The 2029 target will remain fixed at least until January 2027, when progress in quantum computing is expected to be reassessed with external experts.

Hegotá will be a preparatory stage

The Hegotá upgrade itself will not make Ethereum fully resistant to quantum attacks. Its role is to keep future upgrades needed for the transition to new cryptographic protection methods on schedule.

Under the current roadmap, a minimum viable post-quantum version is expected to arrive in one of the future upgrades, currently designated J*, while full quantum resistance is targeted for L*.

If Glamsterdam launches in the fourth quarter of 2026, Ethereum will need to roll out major upgrades roughly every 7.2 months on average to meet the December 2029 goal.

Development will therefore proceed in parallel: while Hegotá is being prepared for launch, the team will already need to be working on specifications for subsequent upgrades.

In addition to post-quantum protection, Ethereum’s long-term research priorities include faster transaction finality, privacy, network state, and zkEVM.

The Ethereum Foundation believes that an early transition to post-quantum protection is important not only for security. It is also intended to demonstrate that Ethereum’s architecture is being designed to operate for decades and even centuries.

Why quantum computers are dangerous

Crypto projects are concerned about quantum computers because they could theoretically break the cryptographic algorithms that underpin blockchain security. Modern networks rely on mathematical problems that are virtually impossible for conventional computers to solve within a reasonable amount of time. A sufficiently powerful quantum computer could potentially derive a private key from public information much faster and gain access to other users’ crypto wallets.

Addresses whose public keys have already been exposed through transactions could be particularly vulnerable, along with the infrastructure of exchanges, bridges, and large asset holders. Quantum computers have not yet reached the level required to attack blockchains on a large scale, but the industry is preparing in advance: moving to new algorithms could take years, while upgrading major networks will require coordinated efforts from developers, validators, wallets, and other ecosystem participants.

Earlier, the Ethereum Foundation decided to rebalance its treasury.

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