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Everything You Need to Know About The Polkadot API (PAPI)
- The Beginners Guide to Polkadot API focuses on building and composing decentralized applications on the Polkadot network.
- Polkadot coordinates and secures different rollups, allowing for a horizontally scaling, multi-chain approach to Web3.
- Light clients play a vital role in connecting to a blockchain securely and efficiently, using Merkle proofs to verify the state.
- The Polkadot API (PAPI) is a Typescript library for interacting with Polkadot, emphasizing a light-client-first approach.
- A tutorial example involves building a CLI app on Polkadot to watch for specific extrinsics and play a 'You've Got Mail!' soundbite.
- The tutorial covers prerequisites like npm, node, git, and the Polkadot.js Browser Extension, with steps to clone the template repository.
- Exploring the template involves creating a light client with smoldot and using the Polkadot stack to interact with the network.
- The application watches for specific events on the Westend network and plays a sound when a remark is received matching certain criteria.
- Testing involves submitting an extrinsic in the PAPI Dev Console, and the CLI should notify 'You've Got Mail!' for the designated account.
- The application's functionality can be expanded by leveraging Polkadot's rollups to enhance features like chatrooms.
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