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TLS-n, which is a protocol extension, and therefore not supported by default, does enable non-repudiation via TLS.

Video is better explanation than the repos.

https://m.youtube.com/watch?v=HnrFsekayrM

So it could be done. Tho it would require the server to add support.

Much like Signed HTTP Exchanges/Web Bundles, the value of an opt-in protocol such as TLS-n is much less than one that would work with all the HTTPS sites already out there. I doubt the Associated Press wants to get into the blockchain oracle business.

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