Blockchains are like computers without an internet connection; they cannot see what is happening in the
outside world. Oracles provide the data (like price feeds, weather, or sports scores) that smart contracts
need to function. Without reliable oracles, DeFi cannot exist. This makes oracle providers some of the
most critical infrastructure projects in the crypto space.
Data Integrity and Manipulation Risks If an oracle provides false data, the smart contract will execute
based on that falsehood. This has led to many ‘oracle manipulation’ attacks where hackers temporarily
inflate the price of an asset on a low-volume exchange to trick a lending protocol into letting them borrow
more than they should. A robust oracle system must use multiple data sources and have a way to filter out
‘outlier’ data.
The Decentralized Oracle Network The most successful oracles use a network of independent nodes that
all provide data and reach a consensus. This prevents a single point of failure. As an investor, you should
look for projects that are ‘industry standard’ and have a wide range of partnerships. The ‘moat’ for an
oracle project is the number of integrations it has. Once a protocol is integrated into hundreds of dApps,
it becomes very difficult to replace.
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