Informational on ACME: how frequently do I have to present challenge

[Phil]

Hi @lukemassa,

Welcome to the community forum.

@lukemassa

if I control my domain, do I need to keep my challenge up all the time, or at least periodically when I request new certs?

Please see the following documents:

• Domain Validation section from the How It Works documents.
• Challenge types

@lukemassa

Does the trust that Let’s Encrypt has with my authorized key pair expire?

After 90 days the certificate will expire. Pros and cons of 90-day certificate lifetimes