# Arbitrary Message Transmission

The blew flow scheme depicts a general pattern of transmitting a message across EVM-compatible blockchains where `Consumer` represents a user's smart contract built on top of Bool Network which must have implemented the standard base contract [`BoolConsumerBase.sol`](https://docs.bool.network/evm-ecosystem/smart-contracts/boolconsumerbase/boolconsumerbase.sol).

<figure><img src="https://362083554-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBPzEwQWF8yFmEtNtg2pz%2Fuploads%2FCXy616cTB5oC1q6WToka%2FFlow_scheme_of_a_crosschain_message.png?alt=media&#x26;token=bc5260ea-19f0-4993-ae0d-22313bbd404a" alt=""><figcaption><p>Lifecycle of a cross-chain message across EVM blockchains.</p></figcaption></figure>