I think he has only one volume. When was this filmed?
#bitcoin. A beginner’s class.
Study bitcoin on #nostr💜 here:
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nostr:npub10wv37amdqnv8edw5yktgsxr62g8k4lqkk2u66fk6c6uwuakzssxsf4v22x https://video.nostr.build/76812323e101232dded4df66a3fbf3758010ae55be57781016f5a82469d7877f.mp4
Discussion
Certainly pre 2013