Protocol 23 Update: Testnet reset Aug. 14, Mainnet Vote Sept. 3

[Justin Rice]

Hey, validators! Some important updates to the Protocol 23 timeline:

• August 14: Testnet reset!

• August 14: Stable builds of key software available

• September 3: Mainnet upgrade vote

Please prepare to install the stable release of Stellar Core v23 between August 14 and September 3 in order to ensure continued comparability with the network.  You can arm your validator for the upgrade with the following command:
upgrades?mode=set&upgradetime=2025-09-03T17:00:00Z&protocolversion=23 

The August 14 Testnet reset  will clear all Testnet ledger entries including account, asset, and contract data, so please be prepared to recreate any you need to persist!  After the reset, you will need to upgrade to new versions of your Stellar-related software including Stellar Core, RPC, Horizon, and Stellar SDKs as soon as possible to ensure Testnet compatibility, even if you upgraded in advance of the Testnet upgrade in July.  

Apologies for the inconvenience, and for the short notice: normally, we don't reset Testnet as part of a protocol upgrade, but this time it's necessary due to some changes to Stellar Core.  

The August 14 Testnet reset will replace the previously scheduled Q3 Testnet reset.

As always, thank you for supporting the network!  This literally can't happen without you!