In 2008, Paypal daily transaction volume was approximately $164 million dollars. On peak days, the Bitcoin network processes over $25 million in transactions. On peak days, the three year old Bitcoin network is already 15% the size of Paypal in 2008 measured by transaction volume.<br />
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In contrast, the largest online payment process, Alipay, does $300 million per day in transaction volume.
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(2) Bitcoin: Is the cryptocurrency Bitcoin a good idea? - Quora
