Citrea mainnet, backed by Peter Thiel, has been live for a week now. This is also the only BTC ecosystem project invested in by his Founders Fund. Although there's still no TGE at the moment, the mainnet activities have already launched, and you can participate to potentially earn future rewards . Activity link: https://app.citrea.xyz/. You can connect your wallet and create your own personal dashboard, which includes four experience dimensions: cross-chain, liquidity, trading, and lending. Each dimension has four role levels, determined by how much you engage with the designated ecosystem projects. According to the announcement, those who participate before February 17th will be part of the Early Adopter Acceleration Program, which provides additional weight. The ctUSD, which connects the entire ecosystem, is a BTC-native stablecoin issued by MoonPay and backed by U.S. Treasury bonds, so it should be relatively secure to operate. Meanwhile, its cBTC comes with a 4% yield strategy launched by market maker Keyrock, with the yield sourced from OTC settlements and verified by Accountable to ensure safety. This yield-generating BTC will also soon be listed on the Citrea DEX.