Stable++, a decentralized over-collateralized stablecoin issuance protocol based on the RGB++ layer, officially launched on the Nervos (CKB) mainnet on 18th May. The first over-collateralized stablecoin protocol in the Nervos ecosystem, RUSD, supports BTC and CKB as collateral. Stable++ plans to support Nervos' public Lightning Network Fiber network. It also plans to deploy on the UTXO stack-based BTC Layer 2. The Stable++ protocol has secured strategic investments from the CKB ecosystem fund.