A web3 application, also known as a decentralized application (DApp), is a type of application that is built on top of a decentralized, distributed ledger or blockchain. The architecture of a web3 application typically consists of the following components:
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Web3 components type:
- Smart contracts are self-executing contracts with the terms of the agreement between the parties being directly written into lines of code. Smart contracts are stored on the blockchain and are triggered by events or transactions.
- Decentralized storage: This refers to using distributed storage systems, such as InterPlanetary File Systems (IPFS), to store data and other application assets in a decentralized manner.
- User interfaces: This can be a web-based or mobile app that allows users to interact with the DApp and its smart contracts.
- Blockchain nodes: These nodes in the decentralized network maintain a copy of the blockchain and participate in the consensus process to validate and record transactions.
- Serverless functions: These are small pieces of code that can be triggered by events and run in a fully managed environment without the need to provision or manage servers. Serverless functions can provide additional functionality to a DApp, such as interacting with external APIs or sending notifications.
- External APIs: These are application programming interfaces (APIs) that allow the DApp to interact with external services or data sources.
Web3 API Layer:
- Identity management: This refers to using decentralized identity systems, such as decentralized identifier (DID) networks, to manage user identities and authentication within the DApp.
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