The Chainlink 2.0 Whitepaper outlines significant advancements in Decentralized Oracle Networks (DONs), focusing on enabling secure off-chain computations and establishing a comprehensive cryptoeconomic security model through explicit staking. This model requires Chainlink nodes to stake LINK tokens, which can be slashed for malicious activities, and is designed to protect against a wide range of adversarial attacks, ensuring high security for smart contracts. The paper details a two-tier oracle network structure, where the first tier efficiently generates oracle reports, and the second tier, comprising independent Chainlink users, resolves disputes. This structure aims to enhance security by making it economically challenging to corrupt the network, as adversaries must outspend the combined stakes of all nodes involved. The document also introduces mechanisms like prioritized watchdog reports and misreporting insurance, intended to incentivize nodes to maintain accuracy and reliability while providing compensation in case of incorrect reports. Overall, the innovations in Chainlink 2.0 aim to support the development of advanced hybrid smart contracts by ensuring the integrity and security of external data and computations they depend on.