Cobie's cryptocurrency angel investor platform Echo has completed its first transaction, with an Echo user investing $300,000 in the synthetic dollar protocol Ethena. In addition, the latest private sale valued Ethena's FDV at $600 million, but participants in this transaction were able to buy in at the previous valuation of $300 million, minus a 5% commission fee charged by the Echo platform. The transaction was proposed by cryptocurrency trader Ser Shokunin, who confirmed the transaction details with The Block alongside BitMEX co-founder Arthur Hayes, family office Maelstrom, and venture capital firm Dragonfly. As the platform's first transaction, the group will not charge any additional management or holding fees. (The Block). Cryptocurrency trader Cobie announced that its cryptocurrency angel investor platform Echo has begun beta testing. The platform's main goal is to gather cryptocurrency investors to collectively participate in various cryptocurrency projects. Currently, Echo is in the invitation testing phase and has been sending invitation emails to early applicants since March 28th.