I am currently looking for ideas for creating a business based on blockchain technology and want to understand which areas are currently most promising for innovation and scaling. I am interested in how blockchain can solve current problems in various industries - for example, in the financial sector, supply chain management, real estate, healthcare or digital assets. In addition to technical aspects, I want to learn about possible legal obstacles and regulatory requirements in different countries, as well as which platforms and technological solutions will help to effectively implement the idea. It is especially important to understand which blockchain-based business models have already proven their effectiveness, which investment attraction tools are the most effective, as well as how to avoid common mistakes at the start of the project. Can you provide advice on choosing specific ideas and steps to develop a successful blockchain business?