PANews reported on September 18 that the full-chain liquidity asset protocol StakeStone launched the liquidity index Bitcoin SBTC ("StakeStoneBTC"). SBTC aims to build a full-chain liquidity BTC asset with the help of the native redemption liquidity of custodial BTC, solve the liquidity dispersion problem currently faced by many BTC derivative assets, and expand the application of BTC assets in the EVM ecosystem and other blockchain networks. SBTC contains a basket of packaged BTC assets, including BTCB, WBTC, FBTC and cbBTC.