What Makes Cryptocurrencies Different?
![Decorative photo: B for Bitcoin symbol on dark blue background with 0s and 1s floating and lines connected to dots to imply network.](https://libertystreeteconomics.newyorkfed.org/wp-content/uploads/sites/2/2023/08/LSE_2023_cryptocurr-diff_460_martin.jpg?w=920)
Permissionless blockchains, which support the most popular cryptocurrency networks like Bitcoin and Ethereum, have shown that it is possible to transfer value without relying on centralized trusted third parties, something that is new and remarkable (although perhaps most clearly useful for less developed financial markets). What makes permissionless blockchains able to transfer value without relying on a small number of trusted third parties is the combination of several components that all need to work together. The components themselves are not particularly new, but the combination of these components is more than the sum of its parts. In this post, we provide a high-level overview of these components and how they interact, taking Bitcoin as an example.