On Mon, Oct 29, 2018, 12:32 AM juan <[1]juan.g71@gmail.com> wrote:

             well, btc could be used privately if the internet were not
     the biggest spy machine ever created. Although bitcoin doesn't have
     special mechanisms for privacy in the protocol, it doesn't have any
     mechanisms to identify users either. The privacy problems in bitcoin
     stem from the privacy problems on the interweb and the surveillance
     state.

   Two BTC wallets, Samourai and Stashcrypto, implement the BIP47 protocol
   for Payment Channels. They offer payments and communications between
   Alice and Bob which cannot observe by Eve.

References

   1. mailto:juan.g71@gmail.com