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Post-Quantum Blockchain Protocol QuantumChain Launches: Cryptographic Security for the Quantum Computing Era

Ethereum Foundation releases QuantumChain post-quantum blockchain protocol, replacing traditional elliptic curve cryptography with lattice-based cryptography to ensure blockchain security in the quantum computing era

Post-Quantum Blockchain Protocol QuantumChain Launches: Cryptographic Security for the Quantum Computing Era

The Ethereum Foundation released the QuantumChain post-quantum blockchain protocol on November 4. The protocol migrates blockchain's cryptographic foundation from traditional elliptic curve cryptography (ECC) to lattice-based cryptography, ensuring blockchain security even after large-scale quantum computers emerge.

QuantumChain's core changes include replacing ECDSA with CRYSTALS-Kyber for digital signatures and secp256k1 with CRYSTALS-Dilithium for address generation. During migration, existing Ethereum assets and smart contracts seamlessly transition to the new protocol through a "cryptographic bridge."

"The threat quantum computers pose to blockchain isn't theoretical — it's a matter of time," said an Ethereum core developer. "QuantumChain lets us prepare before the threat arrives." Over 40 DeFi protocols have announced plans to complete migration to QuantumChain within six months.