Explore a conference talk from CCS 2016 that introduces Town Crier, an authenticated data feed system for smart contracts. Delve into the concept of decentralized smart contracts and their need for trustworthy data. Learn about the proposed data-delivery approaches and the basic idea behind Town Crier. Discover the key features of Intel SGX, including isolation, remote attestation, and secure channels. Examine the tripartite trust model and address challenges such as gas depletion and confidentiality. Gain insights into a practical application through a self-enforcing flight delay insurance example, demonstrating how enclave confidentiality can be leveraged in smart contract implementations.