# Dynamic Bull&Bear NFT based on market situation

By [Alex Galexing](https://paragraph.com/@alex-galexing) · 2022-11-02

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This is my week #5 on the road to web3 journey provided by Alchemy University

[https://twitter.com/AlchemyLearn?s=20&t=MReCNVvaLHCNMh-Dc3Ep9Q](https://twitter.com/AlchemyLearn?s=20&t=MReCNVvaLHCNMh-Dc3Ep9Q)

where I had the pleasure to learn and practice creating hybrid smart-contact.

I used Chainlink oracles to get a truly random number (VRF) on the blockchain, Data Feeds and Automation to keep track of the BTC/USD price move and dynamically change NFT that has been minted on a blockchain.  
The combination of blockchain benefits (like immutability, decentralization, and permissionless) and real-world data opens another world of opportunities.

Great experience and very interesting technologies. A bit of effort to get understand the principles of how it actually works makes it definitely reachable 🤓

Check out the contract I have created 🤘  
Github:

[https://github.com/IamGalexing/bull-bear-dynamic-nft](https://github.com/IamGalexing/bull-bear-dynamic-nft)

Etherscan:

[https://goerli.etherscan.io/address/0x754A7E777a8b08328d24DFa35e34f9CF1C93433C#code](https://goerli.etherscan.io/address/0x754A7E777a8b08328d24DFa35e34f9CF1C93433C#code)

And do not miss an opportunity and join Alchemy University to learn those uncredible and still so new technologies:

[https://university.alchemy.com/](https://university.alchemy.com/)

Meanwhile, I am going to continue my journey 😎🚀

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*Originally published on [Alex Galexing](https://paragraph.com/@alex-galexing/dynamic-bull-bear-nft-based-on-market-situation)*