Introduction

Proof of Stake

Using proof of stake for a cryptocurrency is a hotly debated design choice, however because it adds a mechanism to introduce secure voting, has more capacity to scale, and permits more exotic incentive schemes, we decided to embrace it.

Our proof of stake protocol is called Ouroboros and it has been designed by an extremely talented team of cryptographers from five academic institutions2 led by Professor Aggelos Kiayias of the University of Edinburgh. The core innovation it brings beyond being proven secure using a rigorous cryptographic model is a modular and flexible design that allows for the composition of many protocols to enhance functionality.

This modularity allows for features such as delegation, sidechains, subscribable checkpoints, better data structures for light clients, different forms of random number generation and even different synchronization assumptions. As a network develops from having thousands to millions and even billions of users, the requirements of its consensus algorithm will also change. Thus, it is vital to have enough flexibility to accommodate these changes and thereby future-proof the heart of a cryptocurrency.


Footnotes

2: University of Connecticut, University of Athens, University of Edinburgh, Aarhus University, Tokyo Institute of Technology.

Last updated: July 17, 2020 11:40 UTC

© IOHK 2015 - 2020


Cardano is an open-source project.

Cardano is a software platform ONLY and does not conduct any independent diligence on, or substantive review of, any blockchain asset, digital currency, cryptocurrency or associated funds. You are fully and solely responsible for evaluating your investments, for determining whether you will exchange blockchain assets based on your own judgment, and for all your decisions as to whether to exchange blockchain assets with Cardano. In many cases, blockchain assets you exchange on the basis of your research may not increase in value, and may decrease in value. Similarly, blockchain assets you exchange on the basis of your research may fall or rise in value after your exchange.

Past performance is not indicative of future results. Any investment in blockchain assets involves the risk of loss of part or all of your investment. The value of the blockchain assets you exchange is subject to market and other investment risks