Tezos launches quantum-resistant private payment prototype TzEL on the testnet

According to Cointelegraph, Tezos ecosystem developers have launched a prototype of a private blockchain payment testnet called TzEL, aimed at resisting future quantum computing attacks.

This prototype uses post-quantum cryptography and zk-STARK proofs to protect transaction data and encrypted payment metadata, preventing "collect then decrypt" type attacks. TzEL leverages Tezos's data availability layer to handle the larger proof sizes brought by post-quantum cryptography (approximately 300 KB), which has been one of the main technical obstacles to building scalable quantum-resistant privacy systems on-chain. TzEL is currently running on the Tezos testnet and is still in the development stage, with the transition of the Tezos ecosystem to quantum-resistant cryptography still in its early stages.