In order to connect a service to the OCN, you must choose which OCN node you want to connect to, and know the node's public wallet address. You will then request a registration token (Token_A) from your selected node.
Access the full OCN technical documentation here.
In order to connect a service to the Open Charging Network, you must decide which OCN Node you want to connect to.
To view public nodes available on the public test network and their wallet address, see "Develop on the Test Network".
To view public nodes available on the public test network and their wallet address, see "Develop on the Production Network".
Once you select a node operator that you want to connect to, you must:
Know the OCN Identity (wallet address) of that OCN Node Operator (from Step One above).
Request a registration token (TOKEN_A in OCPI terms). Note that this token is only temporary and will become invalid once the registration is complete.
After you have the public address of your public node and your registration token, you are now ready to create / update your OCN Identity on the OCN Registry. Follow the steps provided here: Create and manage an OCN Identity