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Yes, there's a ton of points to tackle 🙃. I've begun commenting the part 6 of your series, regarding legal documents as NFTs.

In the music NFTs & Metaverses oriented project I'm involved in (called "Soundzone"), we plan to launch another use case, probably at the end of this month or at the beginning of June. I'll have to read your article about music NFTs too, hehe.