According to official sources, Bitcoin layer 2 network Bison Labs has announced the completion of pre-seed round financing with Portal Ventures leading the investment. UTXO Fund, Domo (BRC-20 creator), Linus Chuang, Chief Product Officer of Magic Eden, Waterdrip Capital, Bitcoin Startup Labs, Satoshi Lab, and other strategic investors participated in the investment. It is reported that Bison Labs is a sovereign Rollup solution using ZK proof on Bitcoin, with the smallest trust assumption and highest security in the market.