Previously, making magic states for a fault-tolerant quantum computer demanded 95% of its capacity, leaving just 5% for computation. Google’s development utilizes only about half of the 105 physical qubits of the computer, making it more efficient at a lower cost.
Some magical progress towards “magic state” in quantum!
Our @GoogleQuantumAI team has demonstrated “magic state cultivation” on physical hardware for the first time. The result is a 40x error reduction on our Willow processor vs. previous methods, achieving a state-of-the-art… pic.twitter.com/cYq30dhKLV
— Sundar Pichai (@sundarpichai) October 15, 2026
Google’s milestone achieved a magic state error of 1 in 10,000. Cryptocurrencies remain safe for now because breaking the Elliptic Curve Cryptography (ECC) that secures wallets and signatures requires the current architecture to be scaled by 100,000x. Additionally, breaking Bitcoin would require at least 1,200-1,450 stable logical qubits against the current 105.
Quantum-proof blockchains
With the development bringing us a little closer to Q-Day, several blockchains have already implemented the Post-Quantum Cryptography (PQC) measures approved by the National Institute of Standards and Technology (NIST).
- Quantum Resistant Ledger (QRL)
This is one of the networks built with native quantum resistance from the very beginning, eliminating the need for future hard forks to patch weak points. It uses a hash-based cryptographic method and has been live since 2018. According to the Blockchain Quantum Readiness Index, it is one of the most quantum-safe of all blockchains in the ecosystem.
- Algorand (ALGO)
Algorand has the highest market cap ($1.07 billion) on the list because it is a well-established institutional-grade Layer-1 ecosystem. It utilizes lattice-based digital signatures to enforce quantum security.
- Abelian (ABEL)
This is a Layer-1 blockchain also designed from the ground up with lattice-based cryptography and customizable levels of privacy.
- Mochimo (MCM)
Mochimo is a native post-quantum network running a live mainnet since 2018 with hash-based cryptography.
- QANplatform (QAN)
This is a developer-focused Layer-1 network that incorporates both lattice-based and hash-based mechanisms to protect EVM-compatible smart contracts.
Others closely following are Cellframe (CELL) and Nervous Network (CKB). Meanwhile, leading cryptocurrencies Bitcoin and Ethereum both have quantum security execution proposals. The latter has one of the most active roadmaps for this particular goal.
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