Today· 16 JulRelease

Ushuaia Upgrade Live

Low4.0

◆ Description

Ushuaia introduces tz5, a post-quantum account type using ML-DSA-44, now live on Tezos testnet.

◆ Why it matters

Ushuaia activates a post-quantum account type on Tezos testnet, a concrete technical milestone but still pre-mainnet. Testnet delivery carries no direct, immediate change to XTZ on-chain security or transaction mechanics. It signals steady protocol progress on a forward-looking security narrative, enough to matter to engaged followers without forcing a re-rate.