Integrate PoE Into Your Runtime

The Proof of Existence pallet is done, but we still need to integrate it into your Runtime.

Let’s take a look at that process.

Integration Steps

1. The first place to start is adding the proof_of_existence field to your struct Runtime.

2. Next you need to update your fn new() to also initialize proof_of_existence.

3. After, create a new concrete type Content which is a String. As mentioned, normally this would be a hash, but for simplicity we are once again using a simple string.

   If you want to use a hash now or in the future, it would be as simple as updating this one line to change all the types in your Runtime and Pallet. That is the kind of flexibility we have been working toward!

4. Then, implement proof_of_existence::Config for Runtime, using your types::Content.

5. At this point, things should already compile successfully, so use this as a checkpoint.

6. Introduce a new variant ProofOfExistence for the RuntimeCall.

7. Finally, update your fn dispatch logic to handle re-dispatching ProofOfExistence calls to the proof_of_existence::Pallet.

Hopefully from this process, you can see how all of the abstractions we have introduced has made integrating new Pallets into your runtime quite easy.

We will make this process even easier in the near future using macros!

By the end of this step, everything should compile without warnings.