Course 1: Bridges

Introducing Course 1, Module 5 of Mission Web3, presented by Galxe. Ready to learn about blockchain bridges?

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Written by Operation Team
Updated over a week ago

Welcome to Module 5 - Course 1!

In this lesson, we will explore the concept of Web3 bridges.

By the end of this course, you'll have a solid understanding of what bridges are, their significance within the web3 ecosystem, and the types of bridges that facilitate interoperability across different blockchains and systems.

But first…a little bit about our partner for this module,Stargate!

Stargate is a fully composable liquidity transport protocol that lives at the heart of Omnichain DeFi. Through the implementation of Stargate, both users and decentralized applications (dApps) gain the capability to seamlessly move native assets across different blockchain networks. Simultaneously, they can tap into the protocol's integrated liquidity pools, which offer instant guaranteed finality. The horizon of possibilities knows no bounds within the realm of Stargate.

What are Bridges?

Bridges are essential components of the web3 ecosystem that facilitate communication and interoperability between different blockchains and networks. Imagine bridges as connectors that link distinct blockchain ecosystems, enabling assets, data, and functionalities to seamlessly move between them. These bridges play a pivotal role in achieving blockchain's promise of decentralized, interconnected systems.

A Practical Example: Arbitrum & Ethereum

Let's dive into a concrete example to grasp the importance of bridges:

Consider the scenario of bridging Arbitrum and Ethereum, two prominent blockchain networks. An asset could be locked on the Ethereum blockchain and then "bridged" to Arbitrum. This asset can be used in smart contracts or transactions on the Arbitrum network. Similarly, it can be sent back to Ethereum if needed. This fluid movement of assets between the two blockchains is made possible by web3 bridges.

Types of Bridges

There are two main types of bridges:

  1. Trusted Bridges: Trusted bridges rely on central authorities to facilitate the movement of assets or data between blockchains. While they are faster and simpler to implement, they introduce an element of centralization, which can be a concern in decentralized ecosystems.

    1. Trusted Bridge Example: Binance Smart Chain Bridge: Binance Smart Chain's bridge allows users to transfer assets between Binance Smart Chain and Ethereum. While Binance is a reputable exchange, its bridge can be considered a trusted bridge since users need to trust Binance's control over the bridge's operation and security.

  2. Trustless Bridges: Trustless bridges aim to eliminate the need for central authorities. They utilize smart contracts and cryptographic techniques to ensure security and transparency in the asset transfer process. Trustless bridges are more aligned with the decentralized ethos of the blockchain space.

    1. Trustless Bridge Example: Wrapped Bitcoin (WBTC): WBTC is an example of a trustless bridge. It's a synthetic asset on Ethereum that represents Bitcoin. To create WBTC, users lock up Bitcoin on the Bitcoin blockchain, and in return, an equivalent amount of WBTC is minted on the Ethereum blockchain using smart contracts. This process is trustless, as it relies on cryptographic algorithms and smart contracts, eliminating the need for a centralized entity.

The difference between the two types of bridges is as follows:

Trustless bridges are more secure but often slower, while Trusted bridges can bridge across multiple chains with different architectures.

The Importance of Bridges

In conclusion, web3 bridges play a critical role in achieving interoperability across blockchain networks. They break down barriers, allowing assets and data to flow seamlessly between different ecosystems.

Whether through trusted or trustless mechanisms, bridges enhance the functionality and usability of blockchain technology.

Claim your Galxe NFT here, before you proceed to the next Module.

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