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# System prepended metadata

title: Architecture Course - Problem 4

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# Architecture Course - Problem 4

# #4 Identity-Management

We find ourselves in the same small town of the last exercise. The peer-to-peer payment system is a success! Everyone is really happy with it.

Now, other towns and regions want to clone our system, which would give rise to a multiplicity of DHTs and membranes. We want to be able to manage identities in such a way that merchants from one town can go to another town.

For this exercise, we want to focus specifically in the identity-management side of things. Here are the challenges we want to focus on:

- How do we manage identities, profile and personal information, in a context of multiple membranes and DNAs?
- We want to foster local regional economy. How can we build a system that can enable trust in that a person that we don't know is a local from the region? (Verifiable claims)
- How do we fix private-key management issues? What do we do when keys are lost, or stolen?

## Important infrastructure

Holochain will provide a set of "infrastructure DNAs" to help you build happs with identity-management in mind.

**[Read this article](https://hackmd.io/Y4QSGqn6T_amCvHv6T9f6A)** to find out about them, and try to think how you would use them in your solution.


