Justin Sun announced an $8 million strategic investment in River to support River's integration into the TRON ecosystem and the deployment of its chain-abstract stablecoin infrastructure. According to the disclosure, River will introduce cross-ecosystem assets and liquidity to TRON through satUSD. satUSD can be minted at a 1:1 ratio using USDT, USDD, or USD1, or backed by assets from different blockchains, allowing users to directly participate in TRON's native high-yield opportunities. satUSD is planned to be used alongside USDT and USDD in a stablecoin liquidity pool on SUN, with its price oracle provided by WinkLink. Simultaneously, satUSD will also be listed on JUST for lending scenarios. This integration will cover core assets including USDT, TRX, wBTC, BTT, JST, SUN, WIN, and NFTs, with native sTRX staking yields as the initial entry point. River also plans to launch Smart Vault and Prime Vault for institutions, providing yield-generating products for stablecoins, TRX, and core assets of the TRON ecosystem. River stated that this investment will further solidify its role as a core infrastructure of the TRON ecosystem, driving the scaling of liquidity, yield opportunities, and on-chain activity.