Exchange Online was first provided as a hosted service in dedicated customer environments in 2005 to select pilot customers.[21] Microsoft launched a multi-tenant version of Exchange Online as part of the Business Productivity Online Standard Suite in November 2008.[22] In June 2011, as part of the commercial release of Microsoft Office 365, Exchange Online was updated with the capabilities of Exchange Server 2010.

What other Cryptocurrencies are there

EDA adjustments caused instabilities in mining difficulty of the Bitcoin Cash system, resulting in Bitcoin Cash being thousands of blocks ahead of Bitcoin. To address the problem with stability, a change of the Bitcoin Cash DAA was implemented and the EDA cancelled. The change took effect on 13 November 2017. After the change, the Bitcoin Cash DAA adjusts the mining difficulty after each block. To calculate the difficulty for a new block, the Bitcoin Cash DAA uses a moving window of last 144 blocks.[36]

Does IBM own Blockchain