Assuming that hash is base64 encoded, this solution would conflict with RFC 2616 (and this approach caused Let's Encrypt to fail sometimes too [0] !) [0] https

Assuming that hash is base64 encoded, this solution would conflict with RFC 2616 (and this approach caused Let's Encrypt to fail sometimes too [0] !) [0] https://community.letsencrypt.org/t/may-19-2017-ocsp-and-issuance-outage-postmortem/34922 https://community.letsencrypt.org/t/may-19-2017-ocsp-and-iss...