Build Testnet4 from Source

Step 1: Clone the repository for Testnet4

Clone the repository from the official Bitcoin Core repository:

git clone https://github.com/bitcoin/bitcoin.git
cd bitcoin
git checkout v28.0rc1

Step 2: Build Bitcoin Core

Follow the instructions to build the repository for Linux, MacOS, or Windows. You don't need to reclone the repo if you're asked to, since we've already done that.

Step 3: Run Testnet4 Node

After building, you can run the following:

bitcoind -testnet4 -daemon -txindex=1 -rpcbind=0.0.0.0 -rpcport=18443 -rpcuser=citrea -rpcpassword=citrea

The arguments you provide here are important - if you modify any of these, you may also need to modify some fields before running a Citrea client in the next steps. Please check everything carefully before proceeding.