{ "item_title" : "Cryptocurrency", "item_author" : [" Tim Mathis "], "item_description" : "A cryptocurrency (also known as crypto currency) is a digital asset designed to work as a medium of exchange using cryptography to secure the transactions, to control the creation of additional units, and to verify the transfer of assets. Cryptocurrencies are classified as a subset of digital currencies and are also classified as a subset of alternative currencies and virtual currencies.Bitcoin, created in 2009, was the first decentralized cryptocurrency. Since then, numerous cryptocurrencies have been created. These are frequently called altcoins, as a blend of bitcoin alternative. Bitcoin and its derivatives use decentralized control as opposed to centralized electronic money/centralized banking systems. The decentralized control is related to the use of bitcoin's blockchain transaction database in the role of a distributed ledger", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/9/79/821/530/9798215300879_b.jpg", "price_data" : { "retail_price" : "11.99", "online_price" : "11.99", "our_price" : "11.99", "club_price" : "11.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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