PANews December 18 news, according to official Stacks news, sBTC has been launched on the Stacks mainnet, marking an important step towards a decentralized on-chain Bitcoin economy. sBTC achieves trustlessness, security, and transparency through 1:1 Bitcoin anchoring, institutional signature networks, and Bitcoin hash power assurance, supporting the Bitcoin DeFi ecosystem. In the initial phase, only deposits are supported, with a liquidity cap of 1000 BTC, and offers an annualized reward of up to 5%. Withdrawal functionality will be enabled in the first quarter of 2025, increasing the liquidity cap and advancing the permissionless signature network, further promoting the programmability of Bitcoin and DeFi applications.