What does that bring on top of TLS? If you want to check whether an article ever appeared (even if it's no longer there), then something like https://en.wikipe

What does that bring on top of TLS? If you want to check whether an article ever appeared (even if it's no longer there), then something like https://en.wikipedia.org/wiki/Certificate_Transparency https://en.wikipedia.org/wiki/Certificate_Transparency would be enough. No that's not a blockchain, at least not for a useful definition of blockchain (see https://www.schneier.com/essays/archives/2019/02/theres_no_good_reaso.html https://www.schneier.com/essays/archives/2019/02/theres_no_g...).