Portal aims to offer a decentralized infrastructure for peer-to-peer swapping of BTC across different blockchains without the need for intermediaries, which heightens the risk of hacks. Portal, a San Francisco-based fintech provider, raised $34 million to support the development of its bitcoin-based decentralized exchange (DEX), which exited stealth mode on Tuesday. Investors in the round included Coinbase Ventures, Arrington Capital, OKX Ventures and Gate.io, according to an announcement. Portal will also use the funding to advance the development of a non-custodial wallet.