According to Techub News, Brazilian media valor reported that the fintech company Parfin has created a new blockchain Rayls, which is used as a privacy solution for Brazil's CBDC drex. Drex uses a licensed blockchain system Hyperledger Besu, which will be isolated from Solana, Ethereum and other public chains, while Rayls allows interaction with other open cryptocurrency projects as Ethereum L2, making it possible to combine traditional digital financial solutions with blockchain-based financial solutions. At the same time, Rayls will be tested with another solution, Microsoft ZKP Nova, to become part of the privacy network and protect the information of Brazilians who use drex for transactions. It is worth noting that Rayls requires wallets to perform KYC.