Electroneum (ETN) was launched based on the Cryptonight Proof of Work consensus protocol via an ICO in September 2017, by Richard Ellis who declared that Electroneum is not Bitcoin or Ethereum but rather a micro-payment system, targeting a different group of people on mobile platforms via Android and iOS wallets. Users were given access to their wallets in mid-December 2017.
On 30 May 2018, Electroneum forked to the Cryptonight v7 protocol to enable resistance to ASIC mining, taking the opportunity to implement other several key changes at that fork including doubling the block size and corresponding block reward (up to 200,000 ETN) with 2-minute blocks, reducing the difficulty, extending Mempool life to 3 days and removing RingCT and mixing.
Notably, Electroneum have avoided some of the privacy features of Monero in order to focus on mass audience bulk transactions. A further patch was released on 1 June 2018 to fix a block rejecting issue.

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