It seems that on a regular basis, we hear about massive data breaches or companies sharing highly personal information with third parties without a consumer’s permission or knowledge. The Tide Foundation wants to change that by giving consumers complete control over their personal data on the…
>Hey there, would you upload all your personal data to my public website if I promised to encrypt it?
>But wait, there's more! You can sell it to data companies, and they can't give it to other people without your express consent. There's no way around this. I promise.
This is more the Tide Foundation promise in a nutshell.
This article is about a protocol designed to help people share their personal data. Cool. I've always wanted to put my data on the blockchain and then sell it. /s
They claim a company can't just give your data to another one if you don't allow it using their blockchain... I don't believe that. It sounds like saying Snapchat won't allow other people to see your dirty pictures.
if designed properly, data should never sit on a blockchain for it's the wrong technology choice for the purpose. In your snapchat example, it can be done by encrypting the photos stored on snapchat with the user key. By doing so, no one can have access to those photos other than the user. Providing permission, on the other hand, is impossible to have a full trustless solution since snapchat is a centralized service.