Many DeFi applications depend on blockchain oracle services like Chainlink, and most Web3 apps wouldn’t exist without them.
The bulk of Web3 apps would not be possible without blockchain oracles, which are arguably the least acknowledged part of Web3 architecture. All smart contracts on the blockchain are opaque to the outside world and require data to be submitted through some form of the input mechanism. While many smart contracts can run using internal logic and do not require off-chain data, some and more sophisticated use cases must.
Automated event triggers are challenging to create because smart contracts can’t execute their own functions when conditions are satisfied since every function must be called by either a crypto wallet or by another smart contract. Additionally, because blockchains are unable to produce truly random numbers, it is hard to develop Web3 decentralised apps (dApps) for gaming and gambling without relying on sources of randomness that may be biased or predictable.
Blockchain oracles come to the rescue in this scenario. The most popular oracles include bitcoin price feeds, random number generation, and smart contract automation, as discussed in Decrypt. Oracles are services that deliver off-chain data to on-chain smart contracts in a decentralized and impartial manner. Chainlink, which employs a decentralised network of nodes to independently offer data feeds in return for LINK tokens, was the first oracle service to exist during the 2018 cryptocurrency bear market. Decentralized finance, or DeFi, relies heavily on real-world data and bitcoin price feeds, therefore Chainlink swiftly established itself as the foundation of DeFi.
What Kind Of dApps Rely On Oracles?
With the use of Chainlink’s Verifiable Random Function (VRF), which also powers several Web3 Play-To-Earn (P2E) games, self-running crypto casinos may function without having a “house edge.” Because of VRF, crypto gambling is typically (but not always) fair to its participants, and it also benefits from random number creation that is impartially generated from a decentralized source with fair chances. To decide whether to place a liquidation call on a borrower, DeFi lending and borrowing apps need cryptocurrency and NFT price feeds. Many other DeFi applications also depend on non-crypto price feeds and event reports for functioning.
Last but not least, Chainlink Automation offers smart contract automation for external events, eliminating the requirement to deploy a bot operating on a centralized server to activate the smart contract when the circumstances are appropriate.
Blockchain oracles, which operate in the background, are essential to Web3 because they provide smart contracts with a neutral source of data, unpredictability, and automation. Many innovative and potent apps and dApps that would not be feasible without Chainlink are now viable because of the real-world data it provides to the blockchain. Chainlink, which continues to broaden its Web3 product offerings and impact, is an essential part of many DeFi and CeFi applications.
