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How crypto works 
What EVM is, and why you have the same address on Ethereum, BNB Chain and Polygon 
What is gas in a blockchain?
What EVM is, and why you have the same address on Ethereum, BNB Chain and Polygon EVM is the engine that runs smart contracts on Ethereum and on compatible networks such as BNB Chain, Polygon and Base. Why one address works on all of them, and how to get back a transfer sent on the wrong one.
Article What is gas in a blockchain? Why a transfer costs money and what sets the size of the “gas” fee — with examples from Ethereum, Tron and Solana.