Just browsing the Wikipedia Page for Brave, it’s got built-in:

• Brave Wallet - a cryptocurrency wallet.
• Brave Swap - a cryptocurrency exchange service.
• Blockchain Domain Names support.
• IPFS support - Ok, IPFS isn’t cryptocurrency or blockchain shit, but it is blockchain-adjacent.
• And arguably the biggest cryptocurrency feature, Basic Attention Tokens - a cryptocurrency Brave users can earn by viewing ads in Brave.