To some extent, yes: RFC8657 https://community.letsencrypt.org/t/prod-support-for-rfc8657-caa-constraints-for-accounturi-and-validationmethods/181584 https://c

To some extent, yes: RFC8657 https://community.letsencrypt.org/t/prod-support-for-rfc8657-caa-constraints-for-accounturi-and-validationmethods/181584 https://community.letsencrypt.org/t/prod-support-for-rfc8657... https://www.rfc-editor.org/rfc/rfc8657 https://www.rfc-editor.org/rfc/rfc8657 Though if your threat-model includes local- and/or internet authorities, you probably want to start thinking about alternative roots of trust.