Oracles
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What is Oracles?
Oracles are entities that connect blockchains to external systems, enabling smart contracts to interact with real-world data. They act as bridges, fetching information from off-chain sources like APIs, databases, or even physical sensors, and then relaying that data onto the blockchain for use in smart contract execution. This allows smart contracts to react to real-world events and conditions, making them more versatile and useful.
Free resources to learn Oracles
More in stage 7: Oracles
Oracles: common questions
Can I learn Oracles in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Oracles in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Oracles tutorial for beginners?
It is lesson 83 of 127 in the free Blockchain roadmap, in stage 7, Oracles. If you are new to Blockchain, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.