Introduction

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Greetings to the entire Steemit Crypto Academia community, we hope everyone is well and enjoying this 8th season of the Steemit Engagement Challenge. We are already finishing the 3rd week and giving start to this 4th week, for this week we want you to be able to research Blockchain Oracles and give your opinion about each question posed. --- ![Screenshot_2.png](https://cdn.steemitimages.com/DQmZxswpy6Hy1pMDqGedRyiKHGUSN5ZfrJpP6LoLYMzLJ5q/Screenshot_2.png)

Contest theme: Blockchain Oracles

--- The interaction between the real world and blockchains is necessary; because in that way blockchains can develop their power. Blockchain Oracles are one of the tools that blockchains use, to be able to interact with the physical world. Blockchain Oracles are the medium that communicates the cryptographic world with the physical world, so blockchains can develop all the potential they have to offer to people. When Smart Contracts require information to execute an order, that is where oracles come in, giving the information required for a certain order to be executed. An oracle's main function is to nourish the blockchain with the necessary information. There are different types of Oracles Blockchains, centralized Oracles, and decentralized Oracles. --- ![Screenshot_2.png](https://cdn.steemitimages.com/DQmZxswpy6Hy1pMDqGedRyiKHGUSN5ZfrJpP6LoLYMzLJ5q/Screenshot_2.png)

What is the expectation of this challenge?

--- - Do you know what Blockchain Oracles are? We want to know your opinion. - What are the types of Oracles? - What do you think about decentralized Oracles? - Give us a use case of a decentralized Oracle. --- ![Screenshot_2.png](https://cdn.steemitimages.com/DQmZxswpy6Hy1pMDqGedRyiKHGUSN5ZfrJpP6LoLYMzLJ5q/Screenshot_2.png)

Contest Guidelines

--- - Post your articles in the Steemit Crypto Academy community. The participation time is between Monday, March 20th, 2023, 00:00 UTC to Sunday, March 26th, 2023, 23:59 UTC. - The article should be at a minimum of 500 words. You can write more. Your article must be free of any form of plagiarism. - Your article title should be Steemit Crypto Academy Contest / S8W4 - Blockchain Oracles. Add the tag #cryptoacademy-s8w4 and other relevant tags. - Participants must be appropriately following #club5050 or #club75 or #club100. - Participants must be verified and active users on the platform. - The community moderators would be leaving quality assessments on your articles and probable upvotes. - In addition, your article must get at least 10 upvotes and 5 valid comments to count as valid in the contest, so ensure you interact with other users' entries. Do not be involved in vote-buying.

Rewards

- SC01 would check on the entire 7 participating communities and upvote outstanding content. Upvote is not guaranteed for all articles. Kindly take note. - At the end of the week, we would nominate top 3 users that had performed well in the contest and they would be eligible for votes from SC01/SC02.

Important Notice: The nomination of the top 3 users in our community is not based on good grades alone, it includes their general engagements (quality and quantity of their interactions with other users' articles) to measure the overall performance. Also note that generally, you can only make one post per day in the Steemit Engagement Challenge. --- ![Screenshot_2.png](https://cdn.steemitimages.com/DQmZxswpy6Hy1pMDqGedRyiKHGUSN5ZfrJpP6LoLYMzLJ5q/Screenshot_2.png)

Conclusion

--- The importance of Blockchain Oracles is that they help to have a communication between the real world and blockchains. We look forward to seeing your participation this week and good luck.