Tron founder Justin Sun announced on Twitter: " BTTC is officially launched & Testnet is live now!" BitTorrent Chain (BTTC) is tron's first heterogeneous chain interoperable capacity expansion protocol. It is a cross-chain capacity expansion solution across Tron, Ethereum and BSC. Justin Sun believed that BTTC will deliver heterogeneous cross-chain communication that is decentralised and free of trust, ushering in a new era of “connecting all chains”.