PracticeQuiz content is free on an ad-supported model.
Unfortunately, we can't support ad blocker usage because of the impact on our servers. If you'd like to continue, please disable your ad blocker and reload page.
27.In March of 2013, a miner using a version of the Bitcoin software created a large block, causing a “fork” in the block chain, which resulted in previous versions of the software not accepting this block as valid. Which version of the software was the miner using?