Question: When was Ethereum's ICO? How much ETH was issued at first?
Ethereum was first issued in 2014 after the donations gathered as its pre-sale.
*There was no recorded ICO like many other Cryptocurrencies.
At first, 60 million Ether were created for contributors and 12 million Ethers to the development funds.
Now Ether can be mined at 18 million cap every year.
But this condition isn’t expected to last forever, as sometime in 2018 – 2019 Ethereum will be switched from Proof of Work to a new consensus algorithm, called Casper and the new issuance under casper is expected to be much less than the current number.