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.