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Changelly is an instant cryptocurrency exchange with clear interface that provides the prices for , Litecoin, Ethereum and other altcoins.

Coinbase lets customers from the USA, Canada, UK, Europe, Singapore, and Australia , litecoins and ether with a credit card or bank account.

Wallet & Prepaid Cards. Now on Your Phone. Choose a way to manage your .

And if you want to using a VISA/MasterCard, then here is their official step-by-step guide on doing that.

https://en.wikipedia.org/wiki/Crypto

https://en.wikipedia.org/wiki/Cryptocurrency

https://en.wikipedia.org/wiki/Cryptography

Bitmain S9 Bitcoin Miner Warranty Nightmares – YouTube

Trust management of crypto currency with warranty