That's stable coin is essentially available on Bitcoin from the start thanks to the magic of RGB++ protocol.

Now with Lightning network coming, this combo will present a ground breaking payment system (RUSD on Bitcoin+CKB) with fast confirmation, instant finality and extreme low cost.

According to Foresight News, the Stable++ protocol, strategically invested by the CKB Ecosystem Fund, has been launched on the CKB mainnet. Stable++ is the first over-collateralized stablecoin protocol developed on CKB, serving both the Bitcoin and RGB++ ecosystems. The protocol supports BTC and CKB as collateral to generate the first RGB++ stablecoin, RUSD. In the future, Stable++ will also support the CKB Lightning Network and will be deployed on the BTC L2 issued by UTXO Stack. Through the Leap function of the RGB++ protocol, RUSD will be able to circulate freely within the Bitcoin ecosystem.

Previously, the CKB Ecosystem Fund strategically invested in the Stable++ protocol to introduce a decentralized stablecoin based on native assets with over-collateralization to the Bitcoin and RGB++ ecosystems. This move aims to further enhance the liquidity of the DeFi ecosystem.