Once you have generated your stake key pair and stake address you need to register your keys in the blockchain to be able to later delegate your stake to a stake pool.
This is achieved in two simple steps:
- Create the registration certificate
- Submit the certificate to the blockchain with a transaction
Note that this transaction, apart from the regular transaction fee, requires a key deposit which you get back when you deregister the key.
Create the registration certificate:
cardano-cli shelley stake-address registration-certificate \
--stake-verification-key-file stake.vkey \
To learn more about registration please check Register stake address on the blockchain