https://steemit.com/steemit/@l0k1/getting-the-benefit-of-tor-for-all-blockchains-without-the-problems-of-tor

Blockchains are already anonymised on the inbound side. If there was a way to propagate transactions without revealing the source IP, it would be pretty much as good as Tor by itself. I am campaigning to get this feature added to Steem, but it is applicable to not just all blockchains, but also messaging systems like Bitmessage, and Bitmessage could be scaled down to create a Transient Blockchain based instant messaging system. Yes, I invented that term. Transient Blockchain. It is the name for a blockchain where the data expires.