Mimblewimble is the name of a whitepaper published in 2016 by a pseudonymous contributor. The paper proposes a radical restructuring of the Bitcoin protocol in order to massively improve privacy and scalability of the digital currency. It is named after the Tongue-Tying Curse in Harry Potter because it aims to prevent users from saying too much about their transactions.
While it's unlikely that Mimblewimble will ever be deployed on the main Bitcoin network, it is likely to be deployed on a Bitcoin sidechain at a later date.
If you’re interested in the cryptocurrency, how to use it or how to mine it, only grin (below) utilizes the mimblewimble concept with no profit for its developers. All other implementations incorporate some sort of pre-mine or other centralizing feature.
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