Let's rewind this week. Cardano announced its Shelley upgrade, Justin Sun announced Tron 4.0, and Theta upgraded to Mainnet 2.0. Hasu warned about the growing existential risk for BTC, BitMEX advised clients to use BTC as a hedge against inflation, researchers say that Ethereum remains undervalued, but Ethereum 1.0 has a major role to play before merging with Ethereum 2.0. Meanwhile, major crypto