Upbit Unveils Ethereum Layer 2 ‘GIWA’ To Compete In Infrastructure Race Upbit has unveiled GIWA, an Ethereum Layer 2 network built on Optimism’s OP Stack, as it seeks new growth avenues. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Filed under: Bitcoin - @ September 9, 2025 6:28 am