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Ensuring Data Integrity Using Blockchain With Toradex Torizon

Mohammed Billoo- Watch Now - Duration: 41:07

Ensuring Data Integrity Using Blockchain With Toradex Torizon
Mohammed Billoo
The blockchain has seen explosive growth in the past few years, especially with the advent of cryptocurrency. The blockchain has also become popular in the IoT space, as a mechanism to verify the integrity of data collected by sensor nodes. In this presentation, Mohammed provides an overview of the blockchain and its different uses and applications in the IoT. He also provides a demonstration on a Toradex SoM and carrier board running Torizon which implements a simple blockchain solution. In this example, data is collected on the device and added to the blockchain. Finally, the integrity of the data on the blockchain is verified.
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Score: 0 | 1 month ago | no reply

I'm a bit late but I'll still try an comment :-)

If I got it right, the simple demo shows the downside of the complexity in calculating hashes: it consumes time and energy.
I still have lots of question marks in my head. I didn't get what block chain elements the sender sends to the receiver. Does the sender always send the previous block and the current block? Why did it send the base block with the data block?

The sender would not send the whole chain when a new block is created would it? So the sender needs to get the previous block from somewhere and hope he is the first to add new data?

I do see a bit of a benefit in sharing data in a distributed system with other devices using a blockchain. But for a big net I think there is a big overhead for resolving collisions.

If I think of IoT as a closed system like a factory senor network of some kind. Wouldn't it make more sense to have a central server or some central servers who generate the hashes and builds the blockchain?
The blockchain itself would guarantee the data integrity and creating the chain would be a lot easier. The benefit in slide 19 is still there. Data can be stored everywhere and edge nodes are aware of the data collected by other nodes.

I am missing something... I really don't see how a decentralized blockchain can be used on a big net of IoT devices. The technology is neat, but I really have trouble seeing a use case.

Thanks for the talk and giving me something to think on :-)

Score: 0 | 2 months ago | 1 reply

Very interesting topic. Really enjoyed the demo, as it made it easier to grasp the whole concept of the blockchain and what is involved in adding blocks.

Score: 0 | 1 month ago | no reply

Absolutely! Blockchain is such a massive topic that it is important to get to the crux of its goal, which lets us understand how it can be applied to IoT (if it even can).

Score: 0 | 2 months ago | 1 reply

Great insight and a topic well worth considering.

Score: 0 | 1 month ago | no reply

Thanks! Glad you enjoyed the talk.

Score: 0 | 2 months ago | 1 reply

Cool demonstration, Mohammed! The immutability of blockchain could be so valuable for data that is analyzed or has action taken upon it by automated services. Still trying to wrap my head around the practicality for highly constrained systems.

Score: 0 | 2 months ago | no reply

Glad you enjoyed the demo and the talk! Yes, I agree. Blockchain definitely has a use case in IoT, but it's important to consider the implications of using it in a resource constrained system.