# Protocol Architecture 

- [PDP Token Design](/paydax-docs/paydax-whitepaper-v6/protocol-architecture/pdp-token-design.md)
- [Lending Markets](/paydax-docs/paydax-whitepaper-v6/protocol-architecture/lending-markets.md)
- [Smart Contract Architecture ](/paydax-docs/paydax-whitepaper-v6/protocol-architecture/smart-contract-architecture.md)