# Get Started {% hint style="info" %} The MetaID-TS-SDK source code has been released on GitHub. For the latest API and example code, please refer to the most recent GitHub page. {% endhint %} #### Introduction MetaID SDK provides a set of standard specifications and tools for generating and processing underlying blockchain data that conforms to the MetaID protocol (specifically for UTXO-standard chains, currently supporting the BTC chain). The design goal of MetaID SDK is to offer a relatively unified and efficient method, greatly simplifying the integration of web3 services. It eliminates the need for developers to handle multiple protocols and construct complex UTXO transactions for on-chain data, saving time and reducing the risk of compatibility issues. With the simplicity, compatibility, extensibility, and efficiency of MetaID SDK, traditional application developers can quickly develop and deploy a Dapp application running on a UTXO chain. #### Core Concepts MetaID SDK has two core concepts: Connector and Entity. * **Connector**: Used for authentication and management of identity information, serving as the foundation for users to publish data on the blockchain. * **Entity**: A term used in the application layer for managing resources of a specific data type. From a programming perspective, when you create a new entity instance, you can access its properties and utilize a series of methods it provides for executing on-chain data storage and modifications. Each type of Entity corresponds to the PATH part of the MetaID Specification. #### Installation **Method 1: Use Yarn or NPM** ```bash // Use Yarn yarn add @metaid/metaid // Use NPM npm install --save @metaid/metaid ``` **Method 2: Include as src in Your Native JS Project** This method converts the npm package into a browser-compatible package without requiring a bundling tool like webpack. 1. Initialize a local project: ```bash mkdir generate-metaid-bundle && cd generate-metaid-bundle/ yarn init // or npm init ``` 2. Install the SDK: ```bash npm install --save @metaid/metaid // or yarn add @metaid/metaid ``` 3. Create a `main.js` file with just two lines of code: ```js var metaidSDK = require('@metaid/metaid') window.metaidSDK = metaidSDK ``` 4. Globally install browserify: ```bash npm install -g browserify // or yarn global add browserify ``` 5. After installation, run the command: ```bash browserify main.js -o bundle.js ``` 6. Once the command is executed, a `bundle.js` file will be generated. Now you can include this file along with your HTML code using the `

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