A proxy "joining" multiple HTTP requests into one

[qwertytrewq]

@qwertytrewq

Moreover, this no more requires punishing a canister post-factum, because it simply cannot receive a status 200 reply from the proxy, if misbehaves.

However, see my question, I am not yet 100% sure that signing by tECDSA is not vulnerable of multiple signatures attack, let first get an authoritative answer to that question.