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ICON is one of the largest blockchain networks in the world. There decentralized network allows independent blockchains with different governances to transact with one another without intermediaries In Korea, They already boasts independent blockchains comprised of reputable institutions in major industries such as banks, securities, insurance, hospitals, universities, and more. Also, in the Q4 of this year 2017 they propose to have the main net launch, decentralized exchange and a wallet web/ios/android applications available, also too, when the main net launch is completed, you can trade icx without exchanges... https://icon.foundation/en/