Bitcoin news - First Grin Block Mined as Mimblewimble Privacy Crypto Goes Live http://bitcoin.worldnewsoffice.com/bitcoin-news/first-grin-block-mined-as-mimblewimble-privacy-crypto-goes-live/ Grin, a privacy-focused cryptocurrency built on "mimblewimble" tech, has gone live on mainnet. Tue, 15 Jan 2019 18:39:01 UTC en