What is a Blockchain Oracle? Review of MakerDAO, Augur and Chainlink

Cryptocurrencies are a fast-growing field that suddenly attracted people from a variety of professions: finance, mathematics, economics, theoretical and applied computer science, cryptography, etc. Each one of those have brought in their vocabulary and buzzwords with them. With so many buzzwords being thrown around daily it is sometimes very hard even for professionals to understand what is going on. Today we’ll demystify one more buzzword: oracle.

This is a companion discussion topic for the original entry at https://blog.saturn.network/what-is-a-blockchain-oracle-review-of-makerdao-augur-and-chainlink/