Initial Coin Offering. In an ICO, an entity issues virtual coins, often called tokens, to raise capital. A “token sale” is simply distributing a new cryptocurrency to investors, who typically pay for the tokens in bitcoin or another established cryptocurrency.
The BraveNewCoin aggregated index is chosen as the source of data for Bitcoin, Ethereum and Monero. The BraveNewCoin aggregated index is not used for Litecoin as their index for Litecoin only starts in April 2014 and misses earlier price action. Instead, Litecoin data is retrieved from the BTC-E time series. It should be noted BTC-E has recently (25th July 2017) been shut down by US authorities, however this is after the data interval examined. It has been observed that price differences do exist between cryptocurrency exchanges [19], and it is expected the BTC-E price over time will be different to other exchanges, however with the possibility of exchange arbitrage, prices on different exchanges are reasonably similar.

Altcoins also sometimes differ in the method of verification used to authenticate transactions. While some altcoins use Proof-of-Work systems, others use Proof-of-Stake consensus, which replaces miners with validators. Proof-Of-Stake mining requires a lot less energy and fewer resources than Proof-Of-Work systems since Proof-Of-Work miners have to do much more ‘work’ to mine blocks.
HONG KONG/BEIJING (Reuters) -Didi Global is preparing to relaunch its ride-hailing and other apps in China by the end of the year in anticipation that Beijing's cybersecurity investigation into the company will be wrapped up by then, three people directly involved in the relaunch said. The people, who declined to be identified as the information was private, said they expected China's cyberspace regulator to finalise any penalties on the company in December. In July, the powerful Cyberspace Administration of China (CAC) ordered app stores to remove 25 mobile apps operated by Didi - just days after the ride-hailing giant listed in New York.