Blockchains are digital ledgers recording information in a way that is almost impossible to change, hack, or cheat. They are best known for their crucial role in cryptocurrency systems, such as Bitcoin or MATIC. The latter is the native token of Polygon, a protocol and a framework for building and connecting Ethereum-compatible blockchain networks. This report aims to demystify the technology behind blockchains and to analyze the bull and bear case for Polygon’s future.