# Reference

1. NFT collection trading volume distribution piechart, NFTGo, <https://nftgo.io/analytics/market-overview>
2. Opensea, <https://opensea.io/assets>
3. Bored Ape Yacht Club, Yuga Labs, [https://boredapeyachtclub.com](https://boredapeyachtclub.com/#/)
4. Worst NFT Moments, nftnow, <https://nftnow.com/features/the-worst-crypto-and-nft-moments-of-2022/>
5. Hellobot Universe Official Discord Server, <https://discord.gg/hellobot>
6. Hellobot Web2 business (Korean), thingsflow, <https://thingsflow.com/ko/product>
7. ZEPETO statistics, Naver, <https://www.navercorp.com/en/promotion/pressReleasesView/30824>