- Validators are scheduled to vote on Protocol 23 on September 3 at 17:00 UTC.
- Upgrade introduces unified events and parallel processing to streamline development and throughput.
Stellar has designated its next mainnet upgrade as Protocol 23, code-named “Whisk,” with a validator vote set for September 3 at 17:00 UTC.
Validators to vote on September 3 as SDF formalizes upgrade procedures
According to Stellar’s upgrade guidance, network validators are expected to arm their nodes for the Protocol 23 vote at 17:00 UTC on September 3. The Stellar Development Foundation provided implementation details for validator operators and emphasized that nodes should be configured ahead of the activation window.
Public communications on official channels reiterated the timing and the intent to standardize how upgrades are presented to the community.
The naming convention marks a shift in how Stellar communicates protocol changes. By labeling Protocol 23 as “Whisk,” the foundation intends to clarify the scope of each version for developers and validators.
The update follows a testnet cycle earlier in the summer and comes with documentation for infrastructure operators, including those relying on third-party Horizon and RPC providers.
Unified events and parallel processing aim to reduce friction and improve throughput
Protocol 23 centers on two developer-facing improvements. First, a unified events system is designed to provide consistent, queryable signals across smart contracts and classic ledger operations, simplifying indexing and observability.
Second, enhancements to parallel transaction processing are expected to improve execution concurrency, which can translate into faster confirmation times and lower average fees during periods of network activity. These items are released alongside other changes packaged into the protocol’s set of core proposals.
In preparation for the vote, the foundation highlighted readiness tasks for ecosystem participants. Operators of Horizon and RPC endpoints should ensure compatibility with the new protocol version and confirm that dependent services are aligned.
The documentation includes specific commands for validator operators to set both the upgrade time and target protocol version, reducing the risk of configuration drift around the activation.
Meet Whisk, the Protocol 23 upgrade going live tomorrow (Sept 3, 17:00 UTC) on Stellar.
We’re naming upgrades because names stick and these upgrades deserve to be remembered.
Like the tool, Whisk makes the complex simple. It blends data into one format and speeds up…
— Stellar (@StellarOrg) September 2, 2025
Timeline communications from Stellar’s official channels outlined milestones for the upgrade cycle, including a testnet reset in mid August to stage stable builds before the mainnet vote.
The cadence is intended to allow developers to test application changes against the features introduced in Protocol 23 and to verify downstream tooling prior to activation on mainnet.
As the vote window opens, attention will focus on validator participation and post upgrade network performance. Developers monitoring logs and analytics will be able to evaluate the effect of unified events on indexing workflows and assess whether concurrency improvements reduce contention for throughput during peak traffic.
The foundation’s decision to adopt named releases may also influence how subsequent protocol iterations are communicated to enterprise users and service providers.
At the time of press, XLM is trading at $0.361393, reflecting a modest –0.54% decline over the past 24 hours (a decrease of $0.00197)
