Overview
The FCMP++ and Carrot alpha stressnet is scheduled to hard fork from the current testnet on October 3rd, 2025, at block 2847330! Included below is the software you can use to participate in the alpha stressnet.
FCMP++ is a proposed upgrade to replace ring signatures with membership proofs that span the whole chain. When spending Monero, instead of making a ring signature proving you own 1 of 16 Monero outputs, you make a proof that you own 1 of the 150 million+ Monero outputs from across the entire Monero blockchain.
Carrot is a proposed upgrade to Monero's addressing protocol, bringing new security, privacy, and usability features, while maintaining backwards compatibility with existing addresses.
Both FCMP++ and Carrot have been in development for over a year, while research, security reviews, and audits have progressed in tandem. This alpha stressnet will be the first live network testing the FCMP++ and Carrot integration open to the public.
Alpha Stressnet Information
To participate, please follow the instructions below. If you encounter any issues/bugs/annoyances, please share a detailed issue here. We want as many people testing and reporting issues as possible to help prepare for a smooth launch of FCMP++ and Carrot. Be warned: this is ALPHA software, and will likely have bugs. Please share bug reports that are as detailed as possible! Try to describe the exact set of steps to reproduce any errors you encounter, and if possible, share wallet and daemon logs using log level 2. Detailed bug reports will help us solve bugs right away.
Some things to keep in mind:
- Your FCMP++ wallet MUST point to an FCMP++ compatible daemon.
- Constructing many input transactions takes some time.
- The following features are not yet functional:
- Watch-only wallets & cold wallets.
- Hardware wallet support.
- Multisig.
- Transaction proofs.
- The block explorer.
Thank you and happy testing!
Download daemon/CLI/RPC binaries
This alpha release includes binaries you can download. Just go to the most recent release, find your machine below, and download the zip file. You will find the binaries inside. This doesn't include the GUI wallet binaries.
Using daemon/CLI/RPC/GUI wallet
You can run use these like normally, just remember to provide the --testnet flag for the daemon, CLI, and RPC. Note that if you start with a populated data directory, the database migration will take a very long time (possibly multiple hours).
For GUI, select the "testnet" network type from the drop-down menu in "advanced settings". The daemon port should be 28081.
Compiling from source
Here is a simple python script you can execute to compile and build from source yourself. This includes the GUI wallet.
Connecting with other Stressnet users
The "official" meeting place for discussing the stressnet is the #monero-stressnet:monero.social Matrix room.
The block size is already unintentionally capped at ~100MB due to the details of the block sync protocol and server packet limits in
monerod. The hard cap of 90MB that is being discussed in the MRL would be an explicit stopgap measure before other parts of the daemon broke, potentially causing net splits. Almost all proponents of this cap would be okay removing it in a future hard fork after the technical issues have been resolved.