Lightstreams Smart Hub Client Example

This is an example project written in React Native that demonstrates data that is stored in a decentralized manner with privacy controls. Alice uploads data from her mobile phone to her Smart Hub which gives a universal unique id (Meta hash) for addressing and retrieving the data. Alice then grants Bob permission to access the data using a Smart Contract that manages as the Access Control (ACL) permissions. Bob then connects to his own Smart Hub and pulls a copy of the data to there and then streams to his mobile phone.

For demonstration purposes, the same mobile phone applciation is storing the credentials of Alice and Bob.

Requirements

• node 14.15.4

Install

$ yarn install
$ cp .env.sample .env

Setup

Initialise and run two Smart Hub's that each connect to the Sirius Test Network.

Smart Hub 1:

$ leth init --nodeid=1 --network=sirius --lightclient=true --blockchain_url=https://node.sirius.lightstreams.io --federation=true
$ leth run --nodeid=1 --network=sirius --https

Smart Hub 2:

$ leth init --nodeid=2 --network=sirius --lightclient=true --blockchain_url=https://node.sirius.lightstreams.io --federation=true
$ leth run --nodeid=2 --network=sirius --https

These will be hosting there API's at the following url addresses:

http://localhost:9091
http://localhost:9092

If you configure the Smart Hubs with different nodeid values then set the correct url addresses in the .env file.

Run

$ yarn start

Instructions

1. Ensure Alice's account is topped up with PHT tokens. Use Meta mask configured to the Sirius Network to send tokens to account 0x88a5C2d9919e46F883EB62F7b8Dd9d0CC45bc290

Sirius Network Meta Mask Configuration:

RPC URL: https://node.sirius.lightstreams.io
Chain ID: 162
Currency Symbool: PHT

2. Click Alice: Upload Data. This will upload data to Smart Hub 1 where Alice is the owner of the data..
3. Click Alice: Grant READ to Bob. This will grant READ permission to Bob.
4. Click Bob: Get Data. This will stream the data from Smart Hub 1 to Smart Hub 2 using Bob's account.
5. Click Aice: Revoke READ from Bob. This will revoke READ permission from Bob and the data will be deleted from Smart Hub 2.
6. Click Bob: Get Data. Bob will no longer be able to access the data.