The development of blockchain technology has done more than bring forth digital currencies; it has brought a new whole digital economy into existence. Decentralized applications (dApps) and smart contracts are at the heart of that revolution, two technologies that push blockchain beyond a payment platform. For every individual constructing a crypto portfolio, knowing about such tools is essential as they determine how the cryptocurrencies behave in real-life situations, how trust comes into play without the involvement of intermediaries, and how the digital ecosystems expand.