NanoFusion is a pretty neat project that attempts to add an additional layer of privacy by implementing a trustless mixing protocol.

I am investigating more about it. The github repo has not been updated since 2021, so I’m not sure about what the current status is.

According to the github project, step (1) of the trustless mixing algorithm is the following:

• create an account that can only send funds if all the parties sign the send transaction.

If anyone understands how that is done without sharing private keys, please let me know because I’m having a hard time understanding that.

Another doubt that I have is: how is it possible to pre-sign the Mix -> Out transactions if the hashes of the blocks to be signed are only known after the mixer signs the receive blocks?