Cardano’s development company IOHK announced that the Cardano Shelley public testnet has been officially opened. Anyone who wants to run the Cardano pledge pool can join the test network to prepare for the pledge of rights on the mainnet later this summer. Lianwen previously reported that Charles Hoskinson, the founder of Cardano and CEO of IOHK, said at the end of May that Cardano’s Shelley upgrade will be carried out in June, and if everything goes well, the Shelley upgrade will be launched on June 30. If something goes wrong, it may be delayed until July 7. In addition, users must update before July 20. He also added that Cardano’s virtual summit will be held in early July.