Can I use an Ethereum address from an exchange?

No. It is very important that you do not use an address from an exchange like Coinbase or any other cryptocurrency exchange. The reason is that once you send your ether to the Minds Token Sale address, the tokens are assigned to that address' private key; since services like Coinbase don't provide you with the key, you won't be able to move the tokens when it comes time to actually access them. By using such services to participate in a token sale you will be effectively forfeiting your tokens to Coinbase.

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