Tomorrow· 08 JulRelease

Zipper Upgrade Vote

Medium6.0

◆ Description

Stellar validators vote on whether to upgrade Mainnet to Protocol 27 (Zipper) on July 8 at 17:00 UTC. Zipper adds delegated authentication for custom accounts via CAP-0071-01 and introduces SOROBAN_CREDENTIALS_ADDRESS_V2.

◆ Why it matters

Stellar validators will commit mainnet to Protocol 27 (Zipper) at a fixed time, giving Soroban smart contracts delegated authentication for custom accounts through CAP-0071-01 and the new SOROBAN_CREDENTIALS_ADDRESS_V2 credential type. The upgrade is a concrete, versioned network change rather than a roadmap mention, expanding what developers can build on Soroban without altering consensus, fees, or the asset's demand drivers. Re-rate is incremental: useful infrastructure, not a thesis-level shift, so the event matters mainly to active XLM and Soroban builders tracking capability rollouts.