I've been wanting to write about this for a long time, and finally had some time today to put it together.
The Ethereum unit szabo is equal to one millionth of an ETH, and is named after Nick Szabo.
Nick Szabo often uses vending machines to explain smart contracts: insert a coin, select a product, and the machine dispenses it according to prewritten rules, with no attendant needed.
Ethereum, where $ETH is located, has brought the concept of smart contracts into widespread practice.
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