Too bad it's an altcoin, would have loved to see this implemented directly onto bitcoin, perhaps as sidechain, but still this MimbleWimble technology could be a very important progress for crypto. Because this coin has a very similar grassroots development as bitcoin did and thus no premining, no airdrops, no ICO, A lot of backing from bitcoin developers too I def prefer Grin over its corporate version Beam. Developers receive donations for the project, which seems fair enough. Not easily available yet on exchanges so there is an improvement point, but that is probably bc this project is inherently not so well funded that it can afford listing fees which impo they shouldn't pay anyway. Maybe not the easy gains speculators coin, but long term fundamental perspective looks very promising. One of the very few projects that honestly deserve the not shady at all rating from my point of view
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