Rather, there are only trade-offs made to fulfill a purpose. With bridges, there are no perfect solutions. Generally, they don’t support cross-chain message passing. Liquidity networks – These bridges primarily focus on transferring assets from one chain to another via atomic swaps.Generalized message passing bridges – These bridges can transfer assets, along with messages and arbitrary data across chains.Validator or oracle based bridges – These bridges rely on an external validator set or oracles to validate cross-chain transfers.
Other such bridges include Polygon PoS Bridge, Optimism Gateway (opens in a new tab) ↗, etc. For example, the Arbitrum Bridge (opens in a new tab) ↗ is built to make it convenient for users to bridge from Ethereum Mainnet to Arbitrum.
Native bridges – These bridges are typically built to bootstrap liquidity on a particular blockchain, making it easier for users to move funds to the ecosystem. Atomic swaps – Swap assets on the source chain for assets on the destination chain with another party.īridges can usually be classified into one of the following buckets:. Burn and mint – Burn assets on the source chain and mint assets on the destination chain. Lock and mint – Lock assets on the source chain and mint assets on the destination chain. While there are many types of bridge designs (opens in a new tab) ↗, three ways to facilitate the cross-chain transfer of assets stand out: attracting users and communities from various ecosystems to their dapps. collaboration among developers from various blockchain ecosystems to build new products. For example, developers can benefit from the lower fees offered by the different L2 solutions by deploying their dapps across rollups, and sidechains and users can bridge across them. the opportunity to leverage the strengths of different blockchains. For example, a protocol for yield farming originally deployed on Ethereum Mainnet can offer liquidity pools across all EVM-compatible chains. unlocking new features and use cases for protocols as bridges expand the design space for what protocols can offer. the transfer of any data, information, and assets across chains. Bridges help the development of the overall crypto ecosystem by enabling blockchains to leverage the innovations of each other.įor developers, bridges enable the following: Put simply, bridges unlock numerous use cases by allowing blockchain networks to exchange data and move assets between them.īlockchains have unique strengths, weaknesses, and approaches to building applications (such as speed, throughput, costliness, etc.). They establish a transportation route between blockchains where tokens, messages, arbitrary data, and even smart contract calls can be transferred from one chain to another. 
As a result, while there could be significant activity and innovation within an ecosystem, it is limited by the lack of connectivity and interoperability with other ecosystems.īridges offer a way for isolated blockchain environments to connect with each other. They enable connectivity and interoperability between blockchains.īlockchains exist in siloed environments, meaning there is no way for blockchains to trade and communicate with other blockchains naturally. Need for bridgesīridges exist to connect blockchain networks. Different types of bridges exist to help make this possible. With the proliferation of L1 blockchains and L2 scaling solutions, alongside an ever-growing number of decentralized applications going cross-chain, the need for communication and asset movement across chains has become an essential part of network infrastructure.
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