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Ethereum - The Dow and the Multiple Hard Forks
A month later, he discovered a bug which was not at the implementation, but in the protocol itself. This was a bug with the self-destruct opcode that basically allowed it to be used to make the Ethereum state much, much bigger using a very tiny amount of gas. There we had to do another hard fork, another emergency unexpected hard fork to increase the gas costs of a couple of operations. The end of 2018 was the birth of Uniswap, which I think was a good kind of segue into the DeFi era. And then in 2020, we have the summer of DeFi, and then there was started to be NFTs.