Fhenix, an Ethereum L2 developer focusing on data confidentiality, has completed a $15 million Series A financing round and launched an open testnet. This round of financing was led by Hack VC, with participation from Dao5, Amber Group, Primitive Ventures, GSR, Collider Ventures and others. The Series A financing brings Fhenix's total financing to $22 million. Last September, Fhenix completed a $7 million seed round of financing led by Multicoin Capital and Collider Ventures. (The Block)