Quote from: tromp on Today at 06:52:49 PM

Confidential transactions have been implemented on the Liquid sidechain [1], and a more scalable version based on Mimblewimble has been implemented as a recent soft-fork in Litecoin. The corresponding LIP [2] could be ported to a BIP if there was sufficient interest, but it does seem that such interest is lacking...

[1] https://help.blockstream.com/hc/en-us/articles/900001390743-How-does-Liquid-keep-my-transaction-data-confidential-

[1] https://github.com/litecoin-project/lips/blob/master/lip-0003.mediawiki

I take it that Liquid is a side chain that is attached to the Bitcoin Blockchain (like in Lightning network)?
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By the way, thank you for the references; I added the lecture references where you can notice that the subject is mostly discussed as related to Bitcoin