According to @danheld, the Bitcoin DeFi project BOB (Build on Bitcoin) has launched its testnet, with a mainnet release scheduled for Q4 of this year. The project is a hybrid layer-2 network that utilizes the BitVM computing paradigm to combine Bitcoin's security with Ethereum's programmability, according to the source. A key feature for traders is that BOB aims to use native BTC, not a wrapped version, as the core asset for its DeFi services, a distinction co-founder Alexei Zamyatin emphasized. This approach, similar to how rollups like Arbitrum handle native ETH, could significantly increase the utility and demand for actual Bitcoin (BTC) within the DeFi ecosystem. The project's BitVM bridge, which facilitates the transfer of BTC to and from the rollup, has already garnered support from major industry players like Amber Group, P2P.org, and Solv Protocol, who are operating nodes on the testnet.