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The Ethereum foundation was very careful to make sure Ether was not a security before doing the ICO in August 2014. In fact, they delayed the ETH ICO from January 2014 to August 2014 to make sure they got it right with the law. I know we are going to see some bigger news come out this year with Ethereum now that this grey cloud has been removed. For example, Ethereum futures from COBE will likely be announced soon. Also, FFG Hybrid Casper upgrade looks set to happen b/t Sept. or October.