"The Polkadot protocol is designed to allow unrelated blockchains to securely talk to each other, so that value or data can flow between, say, the Ethereum and Bitcoin blockchains without any intermediary. It’s also designed to be speedy and scalable, via the use of many parallel blockchains (or “parachains”) that take much of the processing demand off of the main blockchain. The DOT token is used for staking and governance."
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