# DApp Builder Infrastructure

- [Infrastructure Overview](/usc/dapp-builder-infrastructure/infrastructure-overview.md): Summarizes the infrastructure DApp builders must set up in order to effectively use the Creditcoin Oracle.
- [Source Chain Smart Contracts](/usc/dapp-builder-infrastructure/source-chain-smart-contracts.md): An overview of source chain smart contracts and the best practice pattern to securely query their data on Creditcoin using the Creditcoin oracle.
- [Universal Smart Contracts](/usc/dapp-builder-infrastructure/universal-smart-contracts.md)
- [DApp Design Patterns](/usc/dapp-builder-infrastructure/dapp-design-patterns.md): An overview of common design patterns for enabling seamless user interactions in a DApp powered by Universal Smart Contracts
- [Offchain Oracle Workers](/usc/dapp-builder-infrastructure/offchain-oracle-workers.md): An overview of Offchain Workers and how to use them to streamline user interactions.
- [USC Tutorials](/usc/dapp-builder-infrastructure/usc-tutorials.md)