Memo transaction

Post memo Yep! https://www.youtube.com/watch?v=fq_ElEA9uLs https://www.youtube.com/watch?v=Z3u7hXpOm58 https://www.youtube.com/watch?v=GygMmKlB2vI https://www.youtube.com/watch?v=AhGW3WWFRjQ
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