An Arbitrary Message Bridge (AMB) between the Kovan Testnet and the POA Sokol Testnet allows Dapps developers to test cross-chain applications.
In order to organize the cross-chain communication the corresponding application can implement its own AMB extension. This is represented by two mediator contracts so that either assets or arbitrary data can be transferred between chains. The deployed mediator contracts do not require a set of oracles to be setup, allowing an application to rapidly test functionality without spending resources on entire infrastructure setup.
The mediator contracts rely on the following information about the Kovan-Sokol Arbitrary Message Bridge:
Gas limit to call method in the Ethereum Mainnet: