Signed HTTP Exchanges?

[fritexvz]

Is there possibillity to support the Signed HTTP Exchanges?

Example here:
https://wicg.github.io/webpackage/draft-yasskin-http-origin-signed-responses.html

How can we implement this on our server?

I am running Nginx.

Or, is there possibillity with CloudFlare?
https://www.cloudflare.com/website-optimization/ampersand/
and
https://blog.cloudflare.com/real-urls-for-amp-cached-content-using-cloudflare-workers/

Thanks!

[ithinkihaveacat]

https://ampbyexample.com already supports Signed HTTP Exchanges (well, until it broke...) it was added in #1592. It should be possible to achieve the same outcome via the CloudFlare's service you linked.