Account registration is done by sending a public key to a certain API endpoint. The key will become associated with an account URL that looks like this: https:/

Account registration is done by sending a public key to a certain API endpoint. The key will become associated with an account URL that looks like this: https://acme-v02.api.letsencrypt.org/acme/acct/4277968575 https://acme-v02.api.letsencrypt.org/acme/acct/4277968575