# 1. FOUNDATIONS

- [Welcome to the official developer documentation and API reference](/1.-foundations/welcome-to-the-official-developer-documentation-and-api-reference.md)
- [1.2 Why Identity Fails in Web2](/1.-foundations/1.2-why-identity-fails-in-web2.md)
- [1.3 Why Payments Fail Without Cryptographic Identity](/1.-foundations/1.3-why-payments-fail-without-cryptographic-identity.md)
- [1.4 What Web3 Got Right & What PTERI Keeps](/1.-foundations/1.4-what-web3-got-right-and-what-pteri-keeps.md)