Mercado Bitcoin is a fintech company that offers products and solutions for the cryptocurrency market in Portugal. Their services include buying, selling, receiving, and sending Bitcoin and other cryptocurrencies. They provide a secure and transparent platform for investing in cryptocurrencies, and they are the first registered service of its kind with the Bank of Portugal. They have a wide range of cryptocurrencies available for trading and offer support in Portuguese through online chat, phone, email, or in-person.