What to know:
- The blockchain platform Ethereum will target post-quantum security until 2029 with a thorough three-to-four-year roadmap.
- The native STARK verification can lower computational costs of decentralized applications more than tenfold.
- In January 2026, Ethereum created a Post-Quantum Security team to coordinate the work of more than ten client teams.
Ethereum Quantum Computers is advancing a multi-year strategy to strengthen its blockchain against future quantum computing risks while improving scalability and efficiency. Ethereum co-founder Vitalik Buterin announced a three-to-four-year roadmap focused on post-quantum security, and further infrastructure upgrades will last until around 2029.
Ethereum Quantum Computers Introduce STARK Verification and Quantum-Safe Signatures
A major feature of the Ethereum Quantum Computers roadmap is replacing traditional transaction re-execution with native STARK verification. The system would verify transactions more efficiently while reducing computational costs for certain decentralized applications by more than tenfold.
Improved verification could enhance network performance as Ethereum continues processing growing transaction volumes and increasingly complex decentralized applications.
Another significant upgrade implies replacing existing ECDSA and BLS cryptographic systems with hash-based quantum-resistant signatures. The mentioned cryptographic solutions will protect user funds, operations of validators, and the whole Ethereum blockchain in the face of the growing development of quantum technology.
Ethereum is planning to expand the state storage capacity to nearly 100 terabytes by 2030 and thus increase scalability without compromising the network performance.
Increased storage capacity will allow for processing growing blockchain activity, decentralized finance protocols, tokenized assets, and enterprise applications, which will secure the ability of Ethereum to cope with ecosystem development in the long term.
Ethereum Quantum Computers Foundation Expands Post-Quantum Security Research
The Ethereum Quantum Computers project also implies more research work conducted by the Ethereum Foundation, which in January 2026, created a special Post-Quantum Security team.
Current initiatives of Ethereum Quantum Computers include leanXMSS quantum-safe signatures, leanVM zero-knowledge virtual machine for signature compression, weekly interoperability testing of more than ten client teams, and research into better data availability infrastructure.
This roadmap also complies with cryptographic standards developed by the U.S. National Institute of Standards and Technology in 2024. Ethereum EIP-8141 adds native account abstraction to Ethereum, giving the ability for users to use quantum-safe signatures without having to upgrade the entire network.
Industry researchers view early preparation as essential because transitioning cryptographic infrastructure across a global blockchain requires years of testing, coordination, and phased implementation before full deployment.
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