Concepts

Dive deeper into the Metalayer

Chains

Each blockchain network is identified by a unique chain number in the Metalayer protocol. This chain identifier is used when specifying the destination chain for cross-chain messages.

​Cross-Chain Operations

Metalayer Messaging supports two types of cross-chain operations:

• Writes: Send messages and execute functions across chains

• Reads: Query data from contracts on other chains

​Message Components

• Destination Domain: The target blockchain network

• Recipient Address: The contract address that will receive the message

• Read Operations: Optional queries to execute on other chains

• Write Call Data: The function call to execute on the destination chain

• Finality Flag: Whether to wait for source chain finality before relay.

​Gas Abstraction

Metalayer handles cross-chain gas payments, allowing developers to pay for destination chain execution using the source chain’s native token.