Avalanche Academy: Interchain Messaging

The ERC-20 standard allows for the representation of various fungible assets on EVM-compatible chains. Unlike the single native token of a chain, ERC-20 tokens are managed via smart contracts. Internally, these contracts maintain a mapping of addresses (EOAs or contract accounts) to their respective token balances.

mapping(address account => uint256) private _balances;

The Avalanche Starter Kit is a pre-configured development environment designed for building dApps on Avalanche. It provides a self-contained setup that includes Avalanche-CLI and Foundry, allowing developers to create Interchain Messaging enabled custom blockchains and develop cross-chain dApps without needing to perform manual local installations of these tools.

Avalanche-CLI is a command-line tool designed for developers to build, test, and manage independent Avalanche blockchains. It allows for the creation of local networks that operate independently of the Mainnet or Fuji Testnet, enabling offline development. Key capabilities include starting and stopping local networks, performing health checks on network nodes, and creating new blockchains with specific parameters.

Avalanche Warp Messaging (AWM) is a general cross-Avalanche L1 communication protocol designed to make all Avalanche blockchains natively interoperable. It allows Avalanche L1s to communicate via authenticated messages by providing signing and verification primitives within AvalancheGo. Because it operates at the protocol level, AWM is not EVM-specific and can be integrated by any Virtual Machine (VM) on Avalanche to send and receive messages across L1s without relying on third-party intermediaries or centralized trust assumptions.

Avalanche utilizes a multi-chain architecture that allows multiple blockchains to run simultaneously. This design is intended to provide greater scalability, customizability, and independence by allowing individual blockchains to be optimized for specialized use cases, which improves the overall performance of the network.

Avalanche Interchain Messaging and Avalanche Warp Messaging (AWM) provide an audited development framework for building cross-Subnet Solidity dApps. This protocol enables native interoperability between Avalanche blockchains, allowing multiple chains with specialized Virtual Machines (VMs) to communicate, which improves overall network scalability and flexibility.

Avalanche Interchain Token Transfer (ICTT) enables the transfer of assets across multiple Avalanche blockchains. This is achieved through a multi-chain system where specialized blockchains communicate via Interchain Messaging and Avalanche Warp Messaging (AWM), allowing developers to build cross-Avalanche L1 dApps using an audited development framework.

An AWM Relayer is a critical component of Interchain Messaging responsible for delivering warp messages between Subnets. It monitors the source Subnet for outgoing warp messages, aggregates the necessary signatures, and delivers the message to the destination Subnet via a transaction. While the Avalanche CLI automatically manages a relayer for local network deployments, production environments require a manually configured and operated relayer. The reference implementation is a standalone application written in Go by Ava Labs.

GitHub Codespaces is a cloud-hosted development environment service that allows developers to write, run, test, and debug code without needing a local setup. It provides a persistent, sandboxed environment that is integrated with the GitHub workflow, ensuring consistency across different development environments and streamlining collaboration.

Permissioning is an optional feature for Avalanche L1 blockchains that allows creators to restrict network access to authorized parties. This is typically used to achieve privacy and confidentiality (e.g., in finance or healthcare), ensure regulatory compliance through data handling controls, or improve cost-efficiency by preventing transaction fee spikes from events like NFT drops. Permissions can be managed by a centralized entity or a decentralized autonomous organization (DAO).