Getting rBTC
You will need rBTC to be able to pay the Gas, which is the fee for using the RSK Blockchain. You can pay the platform fees in rBTC too.
rBTC Smart Bitcoin is a cryptocurrency issued by RSK. It is pegged 1:1 with BTC. rBTC are necessary since with BTC you can't run Smart Contracts, which makes possible for DeFi to exist.
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