Venkatesh Rao@vgrBlockchain for tracking cobalt from mines to uses https://reuters.com/article/us-mining-blockchain-cobalt/blockchain-to-track-congos-cobalt-from-mine-to-mobile-idUSKBN1FM0Y2…10:04 PM · Feb 23, 20184 Retweets6 Likes
AJ@cavepainting·Feb 27, 2018Replying to @vgri am still struggling to understand how it will stop child labor.1
Venkatesh Rao@vgr·Feb 27, 2018Replying to @cavepaintingProvenance tracking, kinda like fair trade coffee or chocolate2