The bitcoin scalability problem refers to the discussion concerning the limits on the amount of transactions the bitcoin network can process. It is related to the fact that records (known as blocks) in the bitcoin blockchain are limited in size and frequency. Bitcoin’s blocks contain the transactions on the bitcoin network. The on chain transaction processing capacity of the bitcoin network is limited by the average block creation time of 10 minutes and the block size limit. These jointly constrain the network’s throughput. The transaction processing capacity maximum is estimated between 3.3 and 7 transactions per second. There are various proposed and activated solutions to address this issue. Business Insider in 2017 characterized this debate as an “ideological battle over bitcoin’s future.”
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