For Bitcoiners who run nodes:
You can start running your node over I2P, for example in addition to over Tor, in less than 5 minutes:
  • Install i2pd (I2P daemon) on the command line:
    Linux:
    $ apt install i2pd && systemctl enable i2pd.service && systemctl start i2pd.service
    MacOS:
    $ brew install i2pd && brew services start i2pd
  • Add these options to your bitcoin.conf configuration file and save it (on Linux it is usually located in the ~/.bitcoin/ directory, and on macOS in ~/Library/Application\ Support/Bitcoin):
    i2psam=127.0.0.1:7656 debug=i2p
  • Restart your node with Bitcoin Core version 22 and up.