Caldera Series (50): Cross-Chain Operation Reading and Writing Practice
Cross-chain operations are a strong suit of Metalayer, supporting both writing and reading modes, allowing developers to easily practice multi-chain interactions. As a blogger, I have personally tried these features and felt like I opened the door to a new world. Writing operations involve sending messages to the target chain to execute functions, such as calling contracts to transfer assets; reading involves querying data from other chains, such as checking balances or statuses without full synchronization.
The ERA token shines in practice. For writing, you can use the ERA from the source chain to pay for gas, as the system abstracts away the complexity and directly executes calls on the target chain. I tested a cross-chain read-write process: initiating a read for the ERA liquidity pool data on the target chain from the source chain, and then based on the results, writing a lending transaction, all through the Hyperlane relay, taking just a few seconds. Compared to traditional methods, this saves time and effort and is also more secure, as there are finality markers to ensure messages are not tampered with.
In practical operations, developers can integrate these features using contract interfaces, such as specifying the recipient address and call data. Holding ERA also allows participation in bridging UI practices, such as transferring tokens through bridge.caldera.xyz to experience the fluidity of reading and writing combined. This not only enhances the efficiency of dApps but also increases the adoption rate of ERA. I recommend beginners to start with the testnet, deploy a simple rollup, and practice cross-chain reading and writing—you will find that Metalayer makes everything intuitive. In the future, ERA will play a role in more cross-chain scenarios, promoting ecosystem interconnectivity.
