Bitcoin and Blockchains explained

David Hopkins, Technology Enhanced Learning Blog, Jul 05, 2016
Commentary by Stephen Downes
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This is another useful attempt to help people get a base-level understanding of what a blockchain is and does. Transactions are encrypted and put into blocks. "A block is the ‘current’ part of a blockchain which records some or all of the recent transactions, and once completed goes into the blockchain as permanent database."

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