Foresight News: Privacy-focused ZK-Rollup DEX Invisible has launched on the testnet, according to a tweet from DEX ZigZag on zkSync. Invisible is an order book exchange that allows users to trade funds privately. Users can participate in the test without needing Goerli ETH, only requiring a signed message. ETH, USDC, and BTC can be applied for testing on the deposit/withdrawal page, with no wallet transaction confirmation needed.