After exploring the messaging API in this article we will explore more about the Query API of Hyperlane. With this article, you can deploy your own contracts which can query the state of any smart contract on any other blockchain using Hyperlane.
Hyperlane makes interchain communication straightforward by providing a simple on-chain API for sending and receiving messages. Query API is very useful and can be used in many cases including:-
Hyperlane makes interchain communication straightforward by providing a simple on-chain API for sending and receiving messages. Query API is very useful and can be used in many cases including:-
We will follow through the blog in the following series:
In this tutorial, we will be building an interchain voting application that lets you vote from any chain and you can fetch the vote count from any remote chain. There are two contracts involved in this process, main contract will be deployed to an origin chain where you can create proposals and vote on them. Coming to the Router contract, you can deploy it onto many remote chains and you can vote on the proposals from this contract as well as you can get the vote count for a particular proposal from the main contract. Hyperlane will be used for all these interchain querying between the contracts.
This is usually the architecture that is followed for Hyperlane integration where we have a set of contracts on other chains and they interact with the contract on the main chain and vice versa based on architecture, through Hyperlane.
Below is the Github repo link, where you can find all the important contracts needed for this tutorial. We will be explaining every snippet of code of all these contracts in this tutorial. You can find all the important contracts in the “src” folder in this repo.