In the old days of the Wild West, posters of wanted criminals were sent out to all Sheriffs’ offices across the country such that the lawmen knew who to watch out for. If a criminal was caught, the updated information was sent again to all the sheriffs so they would not look for someone who had already been removed from the list. Well, that’s pretty much how distributed ledgers work.

A distributed ledger is a network of autonomous computers spread around the world that record, share, and synchronize a database of transactions. Each one in the distributed ledger becomes a witness to, for example, a bitcoin transaction over blockchain, making it impossible for people with malicious intentions to make any alterations in the data.

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