https://nft.topicsjp.com/2023/06/11/%e7%94%9f%e7%89%a9%e5%8c%bb%e5%ad%a6%e7%a0%94%e7%a9%b6%e3%81%ab%e3%81%8a%e3%81%91%e3%82%8bip-nft%e3%81%ae%e5%8f%af%e8%83%bd%e6%80%a7%e3%81%ab%e3%81%a4%e3%81%84%e3%81%a6-hashhub-research/