sBTC is a non-custodial, programmable 1:1 Bitcoin-backed asset that enables decentralized movement of BTC in/out of Bitcoin layers, issued on the Stacks Bitcoin L2 and built by the Stacks developer community. sBTC bridges Bitcoin into DeFi without swapping or exposure to centralized custodians, and is secured and managed by Stacks validators via a threshold signature script on the Bitcoin blockchain, minimizing counterparty risk. sBTC leverages the unique proof-of-transfer (PoX) consensus mechanism of Stacks, a Layer 2 blockchain that connects directly to Bitcoin for enhanced security.